-- main.lua

-- Implements the plugin entrypoint (in this case the entire plugin)





-- Global variables:
local g_Plugin = nil
local g_PluginFolder = ""
local g_Stats = {}
local g_TrackedPages = {}






local function LoadAPIFiles(a_Folder, a_DstTable)
	assert(type(a_Folder) == "string")
	assert(type(a_DstTable) == "table")
	
	local Folder = g_PluginFolder .. a_Folder;
	for _, fnam in ipairs(cFile:GetFolderContents(Folder)) do
		local FileName = Folder .. fnam;
		-- We only want .lua files from the folder:
		if (cFile:IsFile(FileName) and fnam:match(".*%.lua$")) then
			local TablesFn, Err = loadfile(FileName);
			if (type(TablesFn) ~= "function") then
				LOGWARNING("Cannot load API descriptions from " .. FileName .. ", Lua error '" .. Err .. "'.");
			else
				local Tables = TablesFn();
				if (type(Tables) ~= "table") then
					LOGWARNING("Cannot load API descriptions from " .. FileName .. ", returned object is not a table (" .. type(Tables) .. ").");
					break
				end
				for k, cls in pairs(Tables) do
					a_DstTable[k] = cls;
				end
			end  -- if (TablesFn)
		end  -- if (is lua file)
	end  -- for fnam - Folder[]
end





local function CreateAPITables()
	--[[
	We want an API table of the following shape:
	local API = {
		{
			Name = "cCuboid",
			Functions = {
				{Name = "Sort"},
				{Name = "IsInside"}
			},
			Constants = {
			},
			Variables = {
			},
			Descendants = {},  -- Will be filled by ReadDescriptions(), array of class APIs (references to other member in the tree)
		},
		{
			Name = "cBlockArea",
			Functions = {
				{Name = "Clear"},
				{Name = "CopyFrom"},
				...
			},
			Constants = {
				{Name = "baTypes", Value = 0},
				{Name = "baMetas", Value = 1},
				...
			},
			Variables = {
			},
			...
		},
		
		cCuboid = {}  -- Each array item also has the map item by its name
	};
	local Globals = {
		Functions = {
			...
		},
		Constants = {
			...
		}
	};
	--]]

	local Globals = {Functions = {}, Constants = {}, Variables = {}, Descendants = {}};
	local API = {};
	
	local function Add(a_APIContainer, a_ObjName, a_ObjValue)
		if (type(a_ObjValue) == "function") then
			table.insert(a_APIContainer.Functions, {Name = a_ObjName});
		elseif (
			(type(a_ObjValue) == "number") or
			(type(a_ObjValue) == "string")
		) then
			table.insert(a_APIContainer.Constants, {Name = a_ObjName, Value = a_ObjValue});
		end
	end
	
	local function ParseClass(a_ClassName, a_ClassObj)
		local res = {Name = a_ClassName, Functions = {}, Constants = {}, Variables = {}, Descendants = {}};
		-- Add functions and constants:
		for i, v in pairs(a_ClassObj) do
			Add(res, i, v);
		end
		
		-- Member variables:
		local SetField = a_ClassObj[".set"] or {};
		if ((a_ClassObj[".get"] ~= nil) and (type(a_ClassObj[".get"]) == "table")) then
			for k in pairs(a_ClassObj[".get"]) do
				if (SetField[k] == nil) then
					-- It is a read-only variable, add it as a constant:
					table.insert(res.Constants, {Name = k, Value = ""});
				else
					-- It is a read-write variable, add it as a variable:
					table.insert(res.Variables, { Name = k });
				end
			end
		end
		return res;
	end
	
	for i, v in pairs(_G) do
		if (
			(v ~= _G) and           -- don't want the global namespace
			(v ~= _G.packages) and  -- don't want any packages
			(v ~= _G[".get"]) and
			(v ~= g_APIDesc)
		) then
			if (type(v) == "table") then
				local cls = ParseClass(i, v)
				table.insert(API, cls);
				API[cls.Name] = cls
			else
				Add(Globals, i, v);
			end
		end
	end
	
	return API, Globals;
end





local function WriteArticles(f)
	f:write([[
		<a name="articles"><h2>Articles</h2></a>
		<p>The following articles provide various extra information on plugin development</p>
		<ul>
	]]);
	for _, extra in ipairs(g_APIDesc.ExtraPages) do
		local SrcFileName = g_PluginFolder .. "/" .. extra.FileName;
		if (cFile:Exists(SrcFileName)) then
			local DstFileName = "API/" .. extra.FileName;
			if (cFile:Exists(DstFileName)) then
				cFile:Delete(DstFileName);
			end
			cFile:Copy(SrcFileName, DstFileName);
			f:write("<li><a href=\"" .. extra.FileName .. "\">" .. extra.Title .. "</a></li>\n");
		else
			f:write("<li>" .. extra.Title .. " <i>(file is missing)</i></li>\n");
		end
	end
	f:write("</ul><hr />");
end





-- Make a link out of anything with the special linkifying syntax {{link|title}}
local function LinkifyString(a_String, a_Referrer)
	assert(a_Referrer ~= nil);
	assert(a_Referrer ~= "");
	
	--- Adds a page to the list of tracked pages (to be checked for existence at the end)
	local function AddTrackedPage(a_PageName)
		local Pg = (g_TrackedPages[a_PageName] or {});
		table.insert(Pg, a_Referrer);
		g_TrackedPages[a_PageName] = Pg;
	end
	
	--- Creates the HTML for the specified link and title
	local function CreateLink(Link, Title)
		if (Link:sub(1, 7) == "http://") then
			-- The link is a full absolute URL, do not modify, do not track:
			return "<a href=\"" .. Link .. "\">" .. Title .. "</a>";
		end
		local idxHash = Link:find("#");
		if (idxHash ~= nil) then
			-- The link contains an anchor:
			if (idxHash == 1) then
				-- Anchor in the current page, no need to track:
				return "<a href=\"" .. Link .. "\">" .. Title .. "</a>";
			end
			-- Anchor in another page:
			local PageName = Link:sub(1, idxHash - 1);
			AddTrackedPage(PageName);
			return "<a href=\"" .. PageName .. ".html#" .. Link:sub(idxHash + 1) .. "\">" .. Title .. "</a>";
		end
		-- Link without anchor:
		AddTrackedPage(Link);
		return "<a href=\"" .. Link .. ".html\">" .. Title .. "</a>";
	end
	
	-- Linkify the strings using the CreateLink() function:
	local txt = a_String:gsub("{{([^|}]*)|([^}]*)}}", CreateLink)  -- {{link|title}}
	txt = txt:gsub("{{([^|}]*)}}",  -- {{LinkAndTitle}}
		function(LinkAndTitle)
			local idxHash = LinkAndTitle:find("#");
			if (idxHash ~= nil) then
				-- The LinkAndTitle contains a hash, remove the hashed part from the title:
				return CreateLink(LinkAndTitle, LinkAndTitle:sub(1, idxHash - 1));
			end
			return CreateLink(LinkAndTitle, LinkAndTitle);
		end
	);
	return txt;
end





local function WriteHtmlHook(a_Hook, a_HookNav)
	local fnam = "API/" .. a_Hook.DefaultFnName .. ".html";
	local f, error = io.open(fnam, "w");
	if (f == nil) then
		LOG("Cannot write \"" .. fnam .. "\": \"" .. error .. "\".");
		return;
	end
	local HookName = a_Hook.DefaultFnName;
	
	f:write([[<!DOCTYPE html><html>
		<head>
		<title>MCServer API - ]], HookName, [[ Hook</title>
		<link rel="stylesheet" type="text/css" href="main.css" />
		<link rel="stylesheet" type="text/css" href="prettify.css" />
		<script src="prettify.js"></script>
		<script src="lang-lua.js"></script>
		</head>
		<body>
		<div id="content">
		<header>
		<h1>]], a_Hook.Name, [[</h1>
		<hr />
		</header>
		<table><tr><td style="vertical-align: top;">
		Index:<br />
		<a href='index.html#articles'>Articles</a><br />
		<a href='index.html#classes'>Classes</a><br />
		<a href='index.html#hooks'>Hooks</a><br />
		<br />
		Quick navigation:<br />
	]]);
	f:write(a_HookNav);
	f:write([[
		</td><td style="vertical-align: top;"><p>
	]]);
	f:write(LinkifyString(a_Hook.Desc, HookName));
	f:write("</p>\n<hr /><h1>Callback function</h1>\n<p>The default name for the callback function is ");
	f:write(a_Hook.DefaultFnName, ". It has the following signature:\n");
	f:write("<pre class=\"prettyprint lang-lua\">function ", HookName, "(");
	if (a_Hook.Params == nil) then
		a_Hook.Params = {};
	end
	for i, param in ipairs(a_Hook.Params) do
		if (i > 1) then
			f:write(", ");
		end
		f:write(param.Name);
	end
	f:write(")</pre>\n<hr /><h1>Parameters:</h1>\n<table><tr><th>Name</th><th>Type</th><th>Notes</th></tr>\n");
	for _, param in ipairs(a_Hook.Params) do
		f:write("<tr><td>", param.Name, "</td><td>", LinkifyString(param.Type, HookName), "</td><td>", LinkifyString(param.Notes, HookName), "</td></tr>\n");
	end
	f:write("</table>\n<p>" .. LinkifyString(a_Hook.Returns or "", HookName) .. "</p>\n\n");
	f:write([[<hr /><h1>Code examples</h1><h2>Registering the callback</h2>]]);
	f:write("<pre class=\"prettyprint lang-lua\">\n");
	f:write([[cPluginManager:AddHook(cPluginManager.]] .. a_Hook.Name .. ", My" .. a_Hook.DefaultFnName .. [[);]]);
	f:write("</pre>\n\n");
	local Examples = a_Hook.CodeExamples or {};
	for _, example in ipairs(Examples) do
		f:write("<h2>", (example.Title or "<i>missing Title</i>"), "</h2>\n");
		f:write("<p>", (example.Desc or "<i>missing Desc</i>"), "</p>\n");
		f:write("<pre class=\"prettyprint lang-lua\">", (example.Code or "<i>missing Code</i>"), "\n</pre>\n\n");
	end
	f:write([[</td></tr></table></div><script>prettyPrint();</script></body></html>]]);
	f:close();
end





local function WriteHooks(f, a_Hooks, a_UndocumentedHooks, a_HookNav)
	f:write([[
		<a name="hooks"><h2>Hooks</h2></a>
		<p>
		A plugin can register to be called whenever an "interesting event" occurs. It does so by calling
		<a href="cPluginManager.html">cPluginManager</a>'s AddHook() function and implementing a callback
		function to handle the event.</p>
		<p>
		A plugin can decide whether it will let the event pass through to the rest of the plugins, or hide it
		from them. This is determined by the return value from the hook callback function. If the function
		returns false or no value, the event is propagated further. If the function returns true, the processing
		is	stopped, no other plugin receives the notification (and possibly MCServer disables the default
		behavior for the event). See each hook's details to see the exact behavior.</p>
		<table>
		<tr>
		<th>Hook name</th>
		<th>Called when</th>
		</tr>
	]]);
	for _, hook in ipairs(a_Hooks) do
		if (hook.DefaultFnName == nil) then
			-- The hook is not documented yet
			f:write("				<tr>\n					<td>" .. hook.Name .. "</td>\n					<td><i>(No documentation yet)</i></td>\n 				</tr>\n");
			table.insert(a_UndocumentedHooks, hook.Name);
		else
			f:write("				<tr>\n					<td><a href=\"" .. hook.DefaultFnName .. ".html\">" .. hook.Name .. "</a></td>\n					<td>" .. LinkifyString(hook.CalledWhen, hook.Name) .. "</td>\n				</tr>\n");
			WriteHtmlHook(hook, a_HookNav);
		end
	end
	f:write([[
			</table>
			<hr />
	]]);
end





local function ReadDescriptions(a_API)
	-- Returns true if the class of the specified name is to be ignored
	local function IsClassIgnored(a_ClsName)
		if (g_APIDesc.IgnoreClasses == nil) then
			return false;
		end
		for _, name in ipairs(g_APIDesc.IgnoreClasses) do
			if (a_ClsName:match(name)) then
				return true;
			end
		end
		return false;
	end
	
	-- Returns true if the function is to be ignored
	local function IsFunctionIgnored(a_ClassName, a_FnName)
		if (g_APIDesc.IgnoreFunctions == nil) then
			return false;
		end
		if (((g_APIDesc.Classes[a_ClassName] or {}).Functions or {})[a_FnName] ~= nil) then
			-- The function is documented, don't ignore
			return false;
		end
		local FnName = a_ClassName .. "." .. a_FnName;
		for _, name in ipairs(g_APIDesc.IgnoreFunctions) do
			if (FnName:match(name)) then
				return true;
			end
		end
		return false;
	end
	
	-- Returns true if the constant (specified by its fully qualified name) is to be ignored
	local function IsConstantIgnored(a_CnName)
		if (g_APIDesc.IgnoreConstants == nil) then
			return false;
		end;
		for _, name in ipairs(g_APIDesc.IgnoreConstants) do
			if (a_CnName:match(name)) then
				return true;
			end
		end
		return false;
	end
	
	-- Returns true if the member variable (specified by its fully qualified name) is to be ignored
	local function IsVariableIgnored(a_VarName)
		if (g_APIDesc.IgnoreVariables == nil) then
			return false;
		end;
		for _, name in ipairs(g_APIDesc.IgnoreVariables) do
			if (a_VarName:match(name)) then
				return true;
			end
		end
		return false;
	end
	
	-- Remove ignored classes from a_API:
	local APICopy = {};
	for _, cls in ipairs(a_API) do
		if not(IsClassIgnored(cls.Name)) then
			table.insert(APICopy, cls);
		end
	end
	for i = 1, #a_API do
		a_API[i] = APICopy[i];
	end;

	-- Process the documentation for each class:
	for _, cls in ipairs(a_API) do
		-- Initialize default values for each class:
		cls.ConstantGroups = {};
		cls.NumConstantsInGroups = 0;
		cls.NumConstantsInGroupsForDescendants = 0;
		
		-- Rename special functions:
		for _, fn in ipairs(cls.Functions) do
			if (fn.Name == ".call") then
				fn.DocID = "constructor";
				fn.Name = "() <i>(constructor)</i>";
			elseif (fn.Name == ".add") then
				fn.DocID = "operator_plus";
				fn.Name = "<i>operator +</i>";
			elseif (fn.Name == ".div") then
				fn.DocID = "operator_div";
				fn.Name = "<i>operator /</i>";
			elseif (fn.Name == ".mul") then
				fn.DocID = "operator_mul";
				fn.Name = "<i>operator *</i>";
			elseif (fn.Name == ".sub") then
				fn.DocID = "operator_sub";
				fn.Name = "<i>operator -</i>";
			elseif (fn.Name == ".eq") then
				fn.DocID = "operator_eq";
				fn.Name = "<i>operator ==</i>";
			end
		end
		
		local APIDesc = g_APIDesc.Classes[cls.Name];
		if (APIDesc ~= nil) then
			APIDesc.IsExported = true;
			cls.Desc = APIDesc.Desc;
			cls.AdditionalInfo = APIDesc.AdditionalInfo;
			
			-- Process inheritance:
			if (APIDesc.Inherits ~= nil) then
				for _, icls in ipairs(a_API) do
					if (icls.Name == APIDesc.Inherits) then
						table.insert(icls.Descendants, cls);
						cls.Inherits = icls;
					end
				end
			end

			cls.UndocumentedFunctions = {};  -- This will contain names of all the functions that are not documented
			cls.UndocumentedConstants = {};  -- This will contain names of all the constants that are not documented
			cls.UndocumentedVariables = {};  -- This will contain names of all the variables that are not documented
			
			local DoxyFunctions = {};  -- This will contain all the API functions together with their documentation
			
			local function AddFunction(a_Name, a_Params, a_Return, a_Notes)
				table.insert(DoxyFunctions, {Name = a_Name, Params = a_Params, Return = a_Return, Notes = a_Notes});
			end
			
			if (APIDesc.Functions ~= nil) then
				-- Assign function descriptions:
				for _, func in ipairs(cls.Functions) do
					local FnName = func.DocID or func.Name;
					local FnDesc = APIDesc.Functions[FnName];
					if (FnDesc == nil) then
						-- No description for this API function
						AddFunction(func.Name);
						if not(IsFunctionIgnored(cls.Name, FnName)) then
							table.insert(cls.UndocumentedFunctions, FnName);
						end
					else
						-- Description is available
						if (FnDesc[1] == nil) then
							-- Single function definition
							AddFunction(func.Name, FnDesc.Params, FnDesc.Return, FnDesc.Notes);
						else
							-- Multiple function overloads
							for _, desc in ipairs(FnDesc) do
								AddFunction(func.Name, desc.Params, desc.Return, desc.Notes);
							end  -- for k, desc - FnDesc[]
						end
						FnDesc.IsExported = true;
					end
				end  -- for j, func
				
				-- Replace functions with their described and overload-expanded versions:
				cls.Functions = DoxyFunctions;
			else  -- if (APIDesc.Functions ~= nil)
				for _, func in ipairs(cls.Functions) do
					local FnName = func.DocID or func.Name;
					if not(IsFunctionIgnored(cls.Name, FnName)) then
						table.insert(cls.UndocumentedFunctions, FnName);
					end
				end
			end  -- if (APIDesc.Functions ~= nil)
			
			if (APIDesc.Constants ~= nil) then
				-- Assign constant descriptions:
				for _, cons in ipairs(cls.Constants) do
					local CnDesc = APIDesc.Constants[cons.Name];
					if (CnDesc == nil) then
						-- Not documented
						if not(IsConstantIgnored(cls.Name .. "." .. cons.Name)) then
							table.insert(cls.UndocumentedConstants, cons.Name);
						end
					else
						cons.Notes = CnDesc.Notes;
						CnDesc.IsExported = true;
					end
				end  -- for j, cons
			else  -- if (APIDesc.Constants ~= nil)
				for _, cons in ipairs(cls.Constants) do
					if not(IsConstantIgnored(cls.Name .. "." .. cons.Name)) then
						table.insert(cls.UndocumentedConstants, cons.Name);
					end
				end
			end  -- else if (APIDesc.Constants ~= nil)
			
			-- Assign member variables' descriptions:
			if (APIDesc.Variables ~= nil) then
				for _, var in ipairs(cls.Variables) do
					local VarDesc = APIDesc.Variables[var.Name];
					if (VarDesc == nil) then
						-- Not documented
						if not(IsVariableIgnored(cls.Name .. "." .. var.Name)) then
							table.insert(cls.UndocumentedVariables, var.Name);
						end
					else
						-- Copy all documentation:
						for k, v in pairs(VarDesc) do
							var[k] = v
						end
					end
				end  -- for j, var
			else  -- if (APIDesc.Variables ~= nil)
				for _, var in ipairs(cls.Variables) do
					if not(IsVariableIgnored(cls.Name .. "." .. var.Name)) then
						table.insert(cls.UndocumentedVariables, var.Name);
					end
				end
			end  -- else if (APIDesc.Variables ~= nil)
			
			if (APIDesc.ConstantGroups ~= nil) then
				-- Create links between the constants and the groups:
				local NumInGroups = 0;
				local NumInDescendantGroups = 0;
				for j, group in pairs(APIDesc.ConstantGroups) do
					group.Name = j;
					group.Constants = {};
					if (type(group.Include) == "string") then
						group.Include = { group.Include };
					end
					local NumInGroup = 0;
					for _, incl in ipairs(group.Include or {}) do
						for _, cons in ipairs(cls.Constants) do
							if ((cons.Group == nil) and cons.Name:match(incl)) then
								cons.Group = group;
								table.insert(group.Constants, cons);
								NumInGroup = NumInGroup + 1;
							end
						end  -- for cidx - cls.Constants[]
					end  -- for idx - group.Include[]
					NumInGroups = NumInGroups + NumInGroup;
					if (group.ShowInDescendants) then
						NumInDescendantGroups = NumInDescendantGroups + NumInGroup;
					end
					
					-- Sort the constants:
					table.sort(group.Constants,
						function(c1, c2)
							return (c1.Name < c2.Name);
						end
					);
				end  -- for j - APIDesc.ConstantGroups[]
				cls.ConstantGroups = APIDesc.ConstantGroups;
				cls.NumConstantsInGroups = NumInGroups;
				cls.NumConstantsInGroupsForDescendants = NumInDescendantGroups;
				
				-- Remove grouped constants from the normal list:
				local NewConstants = {};
				for _, cons in ipairs(cls.Constants) do
					if (cons.Group == nil) then
						table.insert(NewConstants, cons);
					end
				end
				cls.Constants = NewConstants;
			end  -- if (ConstantGroups ~= nil)
			
		else  -- if (APIDesc ~= nil)
		
			-- Class is not documented at all, add all its members to Undocumented lists:
			cls.UndocumentedFunctions = {};
			cls.UndocumentedConstants = {};
			cls.UndocumentedVariables = {};
			cls.Variables = cls.Variables or {};
			g_Stats.NumUndocumentedClasses = g_Stats.NumUndocumentedClasses + 1;
			for _, func in ipairs(cls.Functions) do
				local FnName = func.DocID or func.Name;
				if not(IsFunctionIgnored(cls.Name, FnName)) then
					table.insert(cls.UndocumentedFunctions, FnName);
				end
			end  -- for j, func - cls.Functions[]
			for _, cons in ipairs(cls.Constants) do
				if not(IsConstantIgnored(cls.Name .. "." .. cons.Name)) then
					table.insert(cls.UndocumentedConstants, cons.Name);
				end
			end  -- for j, cons - cls.Constants[]
			for _, var in ipairs(cls.Variables) do
				if not(IsConstantIgnored(cls.Name .. "." .. var.Name)) then
					table.insert(cls.UndocumentedVariables, var.Name);
				end
			end  -- for j, var - cls.Variables[]
		end  -- else if (APIDesc ~= nil)
		
		-- Remove ignored functions:
		local NewFunctions = {};
		for _, fn in ipairs(cls.Functions) do
			if (not(IsFunctionIgnored(cls.Name, fn.Name))) then
				table.insert(NewFunctions, fn);
			end
		end  -- for j, fn
		cls.Functions = NewFunctions;

		-- Sort the functions (they may have been renamed):
		table.sort(cls.Functions,
			function(f1, f2)
				if (f1.Name == f2.Name) then
					-- Same name, either comparing the same function to itself, or two overloads, in which case compare the params
					if ((f1.Params == nil) or (f2.Params == nil)) then
						return 0;
					end
					return (f1.Params < f2.Params);
				end
				return (f1.Name < f2.Name);
			end
		);
		
		-- Remove ignored constants:
		local NewConstants = {};
		for _, cn in ipairs(cls.Constants) do
			if (not(IsFunctionIgnored(cls.Name, cn.Name))) then
				table.insert(NewConstants, cn);
			end
		end  -- for j, cn
		cls.Constants = NewConstants;
		
		-- Sort the constants:
		table.sort(cls.Constants,
			function(c1, c2)
				return (c1.Name < c2.Name);
			end
		);
		
		-- Remove ignored member variables:
		local NewVariables = {};
		for _, var in ipairs(cls.Variables) do
			if (not(IsVariableIgnored(cls.Name .. "." .. var.Name))) then
				table.insert(NewVariables, var);
			end
		end  -- for j, var
		cls.Variables = NewVariables;
		
		-- Sort the member variables:
		table.sort(cls.Variables,
			function(v1, v2)
				return (v1.Name < v2.Name);
			end
		);
	end  -- for i, cls
	
	-- Sort the descendants lists:
	for _, cls in ipairs(a_API) do
		table.sort(cls.Descendants,
			function(c1, c2)
				return (c1.Name < c2.Name);
			end
		);
	end  -- for i, cls
end





local function ReadHooks(a_Hooks)
	--[[
	a_Hooks = {
		{ Name = "HOOK_1"},
		{ Name = "HOOK_2"},
		...
	};
	We want to add hook descriptions to each hook in this array
	--]]
	for _, hook in ipairs(a_Hooks) do
		local HookDesc = g_APIDesc.Hooks[hook.Name];
		if (HookDesc ~= nil) then
			for key, val in pairs(HookDesc) do
				hook[key] = val;
			end
		end
	end  -- for i, hook - a_Hooks[]
	g_Stats.NumTotalHooks = #a_Hooks;
end





local function WriteHtmlClass(a_ClassAPI, a_ClassMenu)
	local cf, err = io.open("API/" .. a_ClassAPI.Name .. ".html", "w");
	if (cf == nil) then
		LOGINFO("Cannot write HTML API for class " .. a_ClassAPI.Name .. ": " .. err)
		return;
	end
	
	-- Writes a table containing all functions in the specified list, with an optional "inherited from" header when a_InheritedName is valid
	local function WriteFunctions(a_Functions, a_InheritedName)
		if (#a_Functions == 0) then
			return;
		end

		if (a_InheritedName ~= nil) then
			cf:write("<h2>Functions inherited from ", a_InheritedName, "</h2>\n");
		end
		cf:write("<table>\n<tr><th>Name</th><th>Parameters</th><th>Return value</th><th>Notes</th></tr>\n");
		for _, func in ipairs(a_Functions) do
			cf:write("<tr><td>", func.Name, "</td>\n");
			cf:write("<td>", LinkifyString(func.Params or "", (a_InheritedName or a_ClassAPI.Name)), "</td>\n");
			cf:write("<td>", LinkifyString(func.Return or "", (a_InheritedName or a_ClassAPI.Name)), "</td>\n");
			cf:write("<td>", LinkifyString(func.Notes or "<i>(undocumented)</i>", (a_InheritedName or a_ClassAPI.Name)), "</td></tr>\n");
		end
		cf:write("</table>\n");
	end
	
	local function WriteConstantTable(a_Constants, a_Source)
		cf:write("<table>\n<tr><th>Name</th><th>Value</th><th>Notes</th></tr>\n");
		for _, cons in ipairs(a_Constants) do
			cf:write("<tr><td>", cons.Name, "</td>\n");
			cf:write("<td>", cons.Value, "</td>\n");
			cf:write("<td>", LinkifyString(cons.Notes or "", a_Source), "</td></tr>\n");
		end
		cf:write("</table>\n\n");
	end
	
	local function WriteConstants(a_Constants, a_ConstantGroups, a_NumConstantGroups, a_InheritedName)
		if ((#a_Constants == 0) and (a_NumConstantGroups == 0)) then
			return;
		end
		
		local Source = a_ClassAPI.Name
		if (a_InheritedName ~= nil) then
			cf:write("<h2>Constants inherited from ", a_InheritedName, "</h2>\n");
			Source = a_InheritedName;
		end
		
		if (#a_Constants > 0) then
			WriteConstantTable(a_Constants, Source);
		end
		
		for _, group in pairs(a_ConstantGroups) do
			if ((a_InheritedName == nil) or group.ShowInDescendants) then
				cf:write("<a name='", group.Name, "'><p>");
				cf:write(LinkifyString(group.TextBefore or "", Source));
				WriteConstantTable(group.Constants, a_InheritedName or a_ClassAPI.Name);
				cf:write(LinkifyString(group.TextAfter or "", Source), "</a></p>");
			end
		end
	end
	
	local function WriteVariables(a_Variables, a_InheritedName)
		if (#a_Variables == 0) then
			return;
		end
		
		if (a_InheritedName ~= nil) then
			cf:write("<h2>Member variables inherited from ", a_InheritedName, "</h2>\n");
		end
		
		cf:write("<table><tr><th>Name</th><th>Type</th><th>Notes</th></tr>\n");
		for _, var in ipairs(a_Variables) do
			cf:write("<tr><td>", var.Name, "</td>\n");
			cf:write("<td>", LinkifyString(var.Type or "<i>(undocumented)</i>", a_InheritedName or a_ClassAPI.Name), "</td>\n");
			cf:write("<td>", LinkifyString(var.Notes or "", a_InheritedName or a_ClassAPI.Name), "</td>\n				</tr>\n");
		end
		cf:write("</table>\n\n");
	end
	
	local function WriteDescendants(a_Descendants)
		if (#a_Descendants == 0) then
			return;
		end
		cf:write("<ul>");
		for _, desc in ipairs(a_Descendants) do
			cf:write("<li><a href=\"", desc.Name, ".html\">", desc.Name, "</a>");
			WriteDescendants(desc.Descendants);
			cf:write("</li>\n");
		end
		cf:write("</ul>\n");
	end
	
	local ClassName = a_ClassAPI.Name;

	-- Build an array of inherited classes chain:
	local InheritanceChain = {};
	local CurrInheritance = a_ClassAPI.Inherits;
	while (CurrInheritance ~= nil) do
		table.insert(InheritanceChain, CurrInheritance);
		CurrInheritance = CurrInheritance.Inherits;
	end
	
	cf:write([[<!DOCTYPE html><html>
		<head>
		<title>MCServer API - ]], a_ClassAPI.Name, [[ Class</title>
		<link rel="stylesheet" type="text/css" href="main.css" />
		<link rel="stylesheet" type="text/css" href="prettify.css" />
		<script src="prettify.js"></script>
		<script src="lang-lua.js"></script>
		</head>
		<body>
		<div id="content">
		<header>
		<h1>]], a_ClassAPI.Name, [[</h1>
		<hr />
		</header>
		<table><tr><td style="vertical-align: top;">
		Index:<br />
		<a href='index.html#articles'>Articles</a><br />
		<a href='index.html#classes'>Classes</a><br />
		<a href='index.html#hooks'>Hooks</a><br />
		<br />
		Quick navigation:<br />
	]]);
	cf:write(a_ClassMenu);
	cf:write([[
		</td><td style="vertical-align: top;"><h1>Contents</h1>
		<p><ul>
	]]);
	
	local HasInheritance = ((#a_ClassAPI.Descendants > 0) or (a_ClassAPI.Inherits ~= nil));
	
	local HasConstants = (#a_ClassAPI.Constants > 0) or (a_ClassAPI.NumConstantsInGroups > 0);
	local HasFunctions = (#a_ClassAPI.Functions > 0);
	local HasVariables = (#a_ClassAPI.Variables > 0);
	for _, cls in ipairs(InheritanceChain) do
		HasConstants = HasConstants or (#cls.Constants > 0) or (cls.NumConstantsInGroupsForDescendants > 0);
		HasFunctions = HasFunctions or (#cls.Functions > 0);
		HasVariables = HasVariables or (#cls.Variables > 0);
	end
	
	-- Write the table of contents:
	if (HasInheritance) then
		cf:write("<li><a href=\"#inherits\">Inheritance</a></li>\n");
	end
	if (HasConstants) then
		cf:write("<li><a href=\"#constants\">Constants</a></li>\n");
	end
	if (HasVariables) then
		cf:write("<li><a href=\"#variables\">Member variables</a></li>\n");
	end
	if (HasFunctions) then
		cf:write("<li><a href=\"#functions\">Functions</a></li>\n");
	end
	if (a_ClassAPI.AdditionalInfo ~= nil) then
		for i, additional in ipairs(a_ClassAPI.AdditionalInfo) do
			cf:write("<li><a href=\"#additionalinfo_", i, "\">", (additional.Header or "<i>(No header)</i>"), "</a></li>\n");
		end
	end
	cf:write("</ul></p>\n");
	
	-- Write the class description:
	cf:write("<hr /><a name=\"desc\"><h1>", ClassName, " class</h1></a>\n");
	if (a_ClassAPI.Desc ~= nil) then
		cf:write("<p>");
		cf:write(LinkifyString(a_ClassAPI.Desc, ClassName));
		cf:write("</p>\n\n");
	end;
	
	-- Write the inheritance, if available:
	if (HasInheritance) then
		cf:write("<hr /><a name=\"inherits\"><h1>Inheritance</h1></a>\n");
		if (#InheritanceChain > 0) then
			cf:write("<p>This class inherits from the following parent classes:<ul>\n");
			for _, cls in ipairs(InheritanceChain) do
				cf:write("<li><a href=\"", cls.Name, ".html\">", cls.Name, "</a></li>\n");
			end
			cf:write("</ul></p>\n");
		end
		if (#a_ClassAPI.Descendants > 0) then
			cf:write("<p>This class has the following descendants:\n");
			WriteDescendants(a_ClassAPI.Descendants);
			cf:write("</p>\n\n");
		end
	end
	
	-- Write the constants:
	if (HasConstants) then
		cf:write("<a name=\"constants\"><hr /><h1>Constants</h1></a>\n");
		WriteConstants(a_ClassAPI.Constants, a_ClassAPI.ConstantGroups, a_ClassAPI.NumConstantsInGroups, nil);
		g_Stats.NumTotalConstants = g_Stats.NumTotalConstants  + #a_ClassAPI.Constants + (a_ClassAPI.NumConstantsInGroups or 0);
		for _, cls in ipairs(InheritanceChain) do
			WriteConstants(cls.Constants, cls.ConstantGroups, cls.NumConstantsInGroupsForDescendants, cls.Name);
		end;
	end;
	
	-- Write the member variables:
	if (HasVariables) then
		cf:write("<a name=\"variables\"><hr /><h1>Member variables</h1></a>\n");
		WriteVariables(a_ClassAPI.Variables, nil);
		g_Stats.NumTotalVariables = g_Stats.NumTotalVariables + #a_ClassAPI.Variables;
		for _, cls in ipairs(InheritanceChain) do
			WriteVariables(cls.Variables, cls.Name);
		end;
	end
	
	-- Write the functions, including the inherited ones:
	if (HasFunctions) then
		cf:write("<a name=\"functions\"><hr /><h1>Functions</h1></a>\n");
		WriteFunctions(a_ClassAPI.Functions, nil);
		g_Stats.NumTotalFunctions = g_Stats.NumTotalFunctions + #a_ClassAPI.Functions;
		for _, cls in ipairs(InheritanceChain) do
			WriteFunctions(cls.Functions, cls.Name);
		end
	end
	
	-- Write the additional infos:
	if (a_ClassAPI.AdditionalInfo ~= nil) then
		for i, additional in ipairs(a_ClassAPI.AdditionalInfo) do
			cf:write("<a name=\"additionalinfo_", i, "\"><h1>", additional.Header, "</h1></a>\n");
			cf:write(LinkifyString(additional.Contents, ClassName));
		end
	end

	cf:write([[</td></tr></table></div><script>prettyPrint();</script></body></html>]]);
	cf:close();
end





local function WriteClasses(f, a_API, a_ClassMenu)
	f:write([[
		<a name="classes"><h2>Class index</h2></a>
		<p>The following classes are available in the MCServer Lua scripting language:
		<ul>
	]]);
	for _, cls in ipairs(a_API) do
		f:write("<li><a href=\"", cls.Name, ".html\">", cls.Name, "</a></li>\n");
		WriteHtmlClass(cls, a_ClassMenu);
	end
	f:write([[
		</ul></p>
		<hr />
	]]);
end





--- Writes a list of undocumented objects into a file
local function ListUndocumentedObjects(API, UndocumentedHooks)
	local f = io.open("API/_undocumented.lua", "w");
	if (f ~= nil) then
		f:write("\n-- This is the list of undocumented API objects, automatically generated by APIDump\n\n");
		f:write("g_APIDesc =\n{\n\tClasses =\n\t{\n");
		for _, cls in ipairs(API) do
			local HasFunctions = ((cls.UndocumentedFunctions ~= nil) and (#cls.UndocumentedFunctions > 0));
			local HasConstants = ((cls.UndocumentedConstants ~= nil) and (#cls.UndocumentedConstants > 0));
			local HasVariables = ((cls.UndocumentedVariables ~= nil) and (#cls.UndocumentedVariables > 0));
			g_Stats.NumUndocumentedFunctions = g_Stats.NumUndocumentedFunctions + #cls.UndocumentedFunctions;
			g_Stats.NumUndocumentedConstants = g_Stats.NumUndocumentedConstants + #cls.UndocumentedConstants;
			g_Stats.NumUndocumentedVariables = g_Stats.NumUndocumentedVariables + #cls.UndocumentedVariables;
			if (HasFunctions or HasConstants or HasVariables) then
				f:write("\t\t" .. cls.Name .. " =\n\t\t{\n");
				if ((cls.Desc == nil) or (cls.Desc == "")) then
					f:write("\t\t\tDesc = \"\"\n");
				end
			end
			
			if (HasFunctions) then
				f:write("\t\t\tFunctions =\n\t\t\t{\n");
				table.sort(cls.UndocumentedFunctions);
				for _, fn in ipairs(cls.UndocumentedFunctions) do
					f:write("\t\t\t\t" .. fn .. " = { Params = \"\", Return = \"\", Notes = \"\" },\n");
				end  -- for j, fn - cls.UndocumentedFunctions[]
				f:write("\t\t\t},\n\n");
			end
			
			if (HasConstants) then
				f:write("\t\t\tConstants =\n\t\t\t{\n");
				table.sort(cls.UndocumentedConstants);
				for _, cn in ipairs(cls.UndocumentedConstants) do
					f:write("\t\t\t\t" .. cn .. " = { Notes = \"\" },\n");
				end  -- for j, fn - cls.UndocumentedConstants[]
				f:write("\t\t\t},\n\n");
			end
			
			if (HasVariables) then
				f:write("\t\t\tVariables =\n\t\t\t{\n");
				table.sort(cls.UndocumentedVariables);
				for _, vn in ipairs(cls.UndocumentedVariables) do
					f:write("\t\t\t\t" .. vn .. " = { Type = \"\", Notes = \"\" },\n");
				end  -- for j, fn - cls.UndocumentedVariables[]
				f:write("\t\t\t},\n\n");
			end
			
			if (HasFunctions or HasConstants or HasVariables) then
				f:write("\t\t},\n\n");
			end
		end  -- for i, cls - API[]
		f:write("\t},\n");
		
		if (#UndocumentedHooks > 0) then
			f:write("\n\tHooks =\n\t{\n");
			for i, hook in ipairs(UndocumentedHooks) do
				if (i > 1) then
					f:write("\n");
				end
				f:write("\t\t" .. hook .. " =\n\t\t{\n");
				f:write("\t\t\tCalledWhen = \"\",\n");
				f:write("\t\t\tDefaultFnName = \"On\",  -- also used as pagename\n");
				f:write("\t\t\tDesc = [[\n\t\t\t\t\n\t\t\t]],\n");
				f:write("\t\t\tParams =\n\t\t\t{\n");
				f:write("\t\t\t\t{ Name = \"\", Type = \"\", Notes = \"\" },\n");
				f:write("\t\t\t\t{ Name = \"\", Type = \"\", Notes = \"\" },\n");
				f:write("\t\t\t\t{ Name = \"\", Type = \"\", Notes = \"\" },\n");
				f:write("\t\t\t\t{ Name = \"\", Type = \"\", Notes = \"\" },\n");
				f:write("\t\t\t\t{ Name = \"\", Type = \"\", Notes = \"\" },\n");
				f:write("\t\t\t\t{ Name = \"\", Type = \"\", Notes = \"\" },\n");
				f:write("\t\t\t\t{ Name = \"\", Type = \"\", Notes = \"\" },\n");
				f:write("\t\t\t\t{ Name = \"\", Type = \"\", Notes = \"\" },\n");
				f:write("\t\t\t},\n");
				f:write("\t\t\tReturns = [[\n\t\t\t\t\n\t\t\t]],\n");
				f:write("\t\t},  -- " .. hook .. "\n");
			end
			f:write("\t},\n");
		end
		f:write("}\n\n\n\n");
		f:close();
	end
	g_Stats.NumUndocumentedHooks = #UndocumentedHooks;
end





--- Lists the API objects that are documented but not available in the API:
local function ListUnexportedObjects()
	f = io.open("API/_unexported-documented.txt", "w");
	if (f ~= nil) then
		for clsname, cls in pairs(g_APIDesc.Classes) do
			if not(cls.IsExported) then
				-- The whole class is not exported
				f:write("class\t" .. clsname .. "\n");
			else
				if (cls.Functions ~= nil) then
					for fnname, fnapi in pairs(cls.Functions) do
						if not(fnapi.IsExported) then
							f:write("func\t" .. clsname .. "." .. fnname .. "\n");
						end
					end  -- for j, fn - cls.Functions[]
				end
				if (cls.Constants ~= nil) then
					for cnname, cnapi in pairs(cls.Constants) do
						if not(cnapi.IsExported) then
							f:write("const\t" .. clsname .. "." .. cnname .. "\n");
						end
					end  -- for j, fn - cls.Functions[]
				end
			end
		end  -- for i, cls - g_APIDesc.Classes[]
		f:close();
	end
end





local function ListMissingPages()
	local MissingPages = {};
	local NumLinks = 0;
	for PageName, Referrers in pairs(g_TrackedPages) do
		NumLinks = NumLinks + 1;
		if not(cFile:Exists("API/" .. PageName .. ".html")) then
			table.insert(MissingPages, {Name = PageName, Refs = Referrers} );
		end
	end;
	g_Stats.NumTrackedLinks = NumLinks;
	g_TrackedPages = {};
	
	if (#MissingPages == 0) then
		-- No missing pages, congratulations!
		return;
	end
	
	-- Sort the pages by name:
	table.sort(MissingPages,
		function (Page1, Page2)
			return (Page1.Name < Page2.Name);
		end
	);
	
	-- Output the pages:
	local f, err = io.open("API/_missingPages.txt", "w");
	if (f == nil) then
		LOGWARNING("Cannot open _missingPages.txt for writing: '" .. err .. "'. There are " .. #MissingPages .. " pages missing.");
		return;
	end
	for _, pg in ipairs(MissingPages) do
		f:write(pg.Name .. ":\n");
		-- Sort and output the referrers:
		table.sort(pg.Refs);
		f:write("\t" .. table.concat(pg.Refs, "\n\t"));
		f:write("\n\n");
	end
	f:close();
	g_Stats.NumInvalidLinks = #MissingPages;
end





--- Writes the documentation statistics (in g_Stats) into the given HTML file
local function WriteStats(f)
	local function ExportMeter(a_Percent)
		local Color;
		if (a_Percent > 99) then
			Color = "green";
		elseif (a_Percent > 50) then
			Color = "orange";
		else
			Color = "red";
		end
		
		local meter = {
			"\n",
			"<div style=\"background-color: black; padding: 1px; width: 100px\">\n",
			"<div style=\"background-color: ",
			Color,
			"; width: ",
			a_Percent,
			"%; height: 16px\"></div></div>\n</td><td>",
			string.format("%.2f", a_Percent),
			" %",
		};
		return table.concat(meter, "");
	end
	
	f:write([[
		<hr /><a name="docstats"><h2>Documentation statistics</h2></a>
		<table><tr><th>Object</th><th>Total</th><th>Documented</th><th>Undocumented</th><th colspan="2">Documented %</th></tr>
	]]);
	f:write("<tr><td>Classes</td><td>", g_Stats.NumTotalClasses);
	f:write("</td><td>", g_Stats.NumTotalClasses - g_Stats.NumUndocumentedClasses);
	f:write("</td><td>", g_Stats.NumUndocumentedClasses);
	f:write("</td><td>", ExportMeter(100 * (g_Stats.NumTotalClasses - g_Stats.NumUndocumentedClasses) / g_Stats.NumTotalClasses));
	f:write("</td></tr>\n");

	f:write("<tr><td>Functions</td><td>", g_Stats.NumTotalFunctions);
	f:write("</td><td>", g_Stats.NumTotalFunctions - g_Stats.NumUndocumentedFunctions);
	f:write("</td><td>", g_Stats.NumUndocumentedFunctions);
	f:write("</td><td>", ExportMeter(100 * (g_Stats.NumTotalFunctions - g_Stats.NumUndocumentedFunctions) / g_Stats.NumTotalFunctions));
	f:write("</td></tr>\n");

	f:write("<tr><td>Member variables</td><td>", g_Stats.NumTotalVariables);
	f:write("</td><td>", g_Stats.NumTotalVariables - g_Stats.NumUndocumentedVariables);
	f:write("</td><td>", g_Stats.NumUndocumentedVariables);
	f:write("</td><td>", ExportMeter(100 * (g_Stats.NumTotalVariables - g_Stats.NumUndocumentedVariables) / g_Stats.NumTotalVariables));
	f:write("</td></tr>\n");

	f:write("<tr><td>Constants</td><td>", g_Stats.NumTotalConstants);
	f:write("</td><td>", g_Stats.NumTotalConstants - g_Stats.NumUndocumentedConstants);
	f:write("</td><td>", g_Stats.NumUndocumentedConstants);
	f:write("</td><td>", ExportMeter(100 * (g_Stats.NumTotalConstants - g_Stats.NumUndocumentedConstants) / g_Stats.NumTotalConstants));
	f:write("</td></tr>\n");
	
	f:write("<tr><td>Hooks</td><td>", g_Stats.NumTotalHooks);
	f:write("</td><td>", g_Stats.NumTotalHooks - g_Stats.NumUndocumentedHooks);
	f:write("</td><td>", g_Stats.NumUndocumentedHooks);
	f:write("</td><td>", ExportMeter(100 * (g_Stats.NumTotalHooks - g_Stats.NumUndocumentedHooks) / g_Stats.NumTotalHooks));
	f:write("</td></tr>\n");
	
	f:write([[
		</table>
		<p>There are ]], g_Stats.NumTrackedLinks, " internal links, ", g_Stats.NumInvalidLinks, " of them are invalid.</p>"
	);
end





local function DumpAPIHtml(a_API)
	LOG("Dumping all available functions and constants to API subfolder...");
	
	-- Create the output folder
	if not(cFile:IsFolder("API")) then
		cFile:CreateFolder("API");
	end

	LOG("Copying static files..");
	cFile:CreateFolder("API/Static");
	local localFolder = g_Plugin:GetLocalFolder();
	for _, fnam in ipairs(cFile:GetFolderContents(localFolder .. "/Static")) do
		cFile:Delete("API/Static/" .. fnam);
		cFile:Copy(localFolder .. "/Static/" .. fnam, "API/Static/" .. fnam);
	end

	-- Extract hook constants:
	local Hooks = {};
	local UndocumentedHooks = {};
	for name, obj in pairs(cPluginManager) do
		if (
			(type(obj) == "number") and
			name:match("HOOK_.*") and
			(name ~= "HOOK_MAX") and
			(name ~= "HOOK_NUM_HOOKS")
		) then
			table.insert(Hooks, { Name = name });
		end
	end
	table.sort(Hooks,
		function(Hook1, Hook2)
			return (Hook1.Name < Hook2.Name);
		end
	);
	ReadHooks(Hooks);
	
	-- Create a "class index" file, write each class as a link to that file,
	-- then dump class contents into class-specific file
	LOG("Writing HTML files...");
	local f, err = io.open("API/index.html", "w");
	if (f == nil) then
		LOGINFO("Cannot output HTML API: " .. err);
		return;
	end

	-- Create a class navigation menu that will be inserted into each class file for faster navigation (#403)
	local ClassMenuTab = {};
	for _, cls in ipairs(a_API) do
		table.insert(ClassMenuTab, "<a href='");
		table.insert(ClassMenuTab, cls.Name);
		table.insert(ClassMenuTab, ".html'>");
		table.insert(ClassMenuTab, cls.Name);
		table.insert(ClassMenuTab, "</a><br />");
	end
	local ClassMenu = table.concat(ClassMenuTab, "");
	
	-- Create a hook navigation menu that will be inserted into each hook file for faster navigation(#403)
	local HookNavTab = {};
	for _, hook in ipairs(Hooks) do
		table.insert(HookNavTab, "<a href='");
		table.insert(HookNavTab, hook.DefaultFnName);
		table.insert(HookNavTab, ".html'>");
		table.insert(HookNavTab, (hook.Name:gsub("^HOOK_", "")));  -- remove the "HOOK_" part of the name
		table.insert(HookNavTab, "</a><br />");
	end
	local HookNav = table.concat(HookNavTab, "");
	
	-- Write the HTML file:
	f:write([[<!DOCTYPE html>
		<html>
		<head>
		<title>MCServer API - Index</title>
		<link rel="stylesheet" type="text/css" href="main.css" />
		</head>
		<body>
		<div id="content">
		<header>
		<h1>MCServer API - Index</h1>
		<hr />
		</header>
		<p>The API reference is divided into the following sections:</p>
		<ul>
		<li><a href="#articles">Articles</a></li>
		<li><a href="#classes">Class index</a></li>
		<li><a href="#hooks">Hooks</a></li>
		<li><a href="#docstats">Documentation statistics</a></li>
		</ul>
		<hr />
	]]);
	
	WriteArticles(f);
	WriteClasses(f, a_API, ClassMenu);
	WriteHooks(f, Hooks, UndocumentedHooks, HookNav);
	
	-- Copy the static files to the output folder:
	local StaticFiles =
	{
		"main.css",
		"prettify.js",
		"prettify.css",
		"lang-lua.js",
	};
	for _, fnam in ipairs(StaticFiles) do
		cFile:Delete("API/" .. fnam);
		cFile:Copy(g_Plugin:GetLocalFolder() .. "/" .. fnam, "API/" .. fnam);
	end
	
	-- List the documentation problems:
	LOG("Listing leftovers...");
	ListUndocumentedObjects(a_API, UndocumentedHooks);
	ListUnexportedObjects();
	ListMissingPages();

	WriteStats(f);
	
	f:write([[			</ul>
		</div>
	</body>
</html>]]);
	f:close();
	
	LOG("API subfolder written");
end





--- Returns the string with extra tabs and CR/LFs removed
local function CleanUpDescription(a_Desc)
	-- Get rid of indent and newlines, normalize whitespace:
	local res = a_Desc:gsub("[\n\t]", "")
	res = a_Desc:gsub("%s%s+", " ")
	
	-- Replace paragraph marks with newlines:
	res = res:gsub("<p>", "\n")
	res = res:gsub("</p>", "")
	
	-- Replace list items with dashes:
	res = res:gsub("</?ul>", "")
	res = res:gsub("<li>", "\n    - ")
	res = res:gsub("</li>", "")
	
	return res
end





--- Writes a list of methods into the specified file in ZBS format
local function WriteZBSMethods(f, a_Methods)
	for _, func in ipairs(a_Methods or {}) do
		f:write("\t\t\t[\"", func.Name, "\"] =\n")
		f:write("\t\t\t{\n")
		f:write("\t\t\t\ttype = \"method\",\n")
		if ((func.Notes ~= nil) and (func.Notes ~= "")) then
			f:write("\t\t\t\tdescription = [[", CleanUpDescription(func.Notes or ""), " ]],\n")
		end
		f:write("\t\t\t},\n")
	end
end





--- Writes a list of constants into the specified file in ZBS format
local function WriteZBSConstants(f, a_Constants)
	for _, cons in ipairs(a_Constants or {}) do
		f:write("\t\t\t[\"", cons.Name, "\"] =\n")
		f:write("\t\t\t{\n")
		f:write("\t\t\t\ttype = \"value\",\n")
		if ((cons.Desc ~= nil) and (cons.Desc ~= "")) then
			f:write("\t\t\t\tdescription = [[", CleanUpDescription(cons.Desc or ""), " ]],\n")
		end
		f:write("\t\t\t},\n")
	end
end





--- Writes one MCS class definition into the specified file in ZBS format
local function WriteZBSClass(f, a_Class)
	assert(type(a_Class) == "table")
	
	-- Write class header:
	f:write("\t", a_Class.Name, " =\n\t{\n")
	f:write("\t\ttype = \"class\",\n")
	f:write("\t\tdescription = [[", CleanUpDescription(a_Class.Desc or ""), " ]],\n")
	f:write("\t\tchilds =\n")
	f:write("\t\t{\n")
	
	-- Export methods and constants:
	WriteZBSMethods(f, a_Class.Functions)
	WriteZBSConstants(f, a_Class.Constants)
	
	-- Finish the class definition:
	f:write("\t\t},\n")
	f:write("\t},\n\n")
end





--- Dumps the entire API table into a file in the ZBS format
local function DumpAPIZBS(a_API)
	LOG("Dumping ZBS API description...")
	local f, err = io.open("mcserver_api.lua", "w")
	if (f == nil) then
		LOG("Cannot open mcserver_lua.lua for writing, ZBS API will not be dumped. " .. err)
		return
	end
	
	-- Write the file header:
	f:write("-- This is a MCServer API file automatically generated by the APIDump plugin\n")
	f:write("-- Note that any manual changes will be overwritten by the next dump\n\n")
	f:write("return {\n")
	
	-- Export each class except Globals, store those aside:
	local Globals
	for _, cls in ipairs(a_API) do
		if (cls.Name ~= "Globals") then
			WriteZBSClass(f, cls)
		else
			Globals = cls
		end
	end
	
	-- Export the globals:
	if (Globals) then
		WriteZBSMethods(f, Globals.Functions)
		WriteZBSConstants(f, Globals.Constants)
	end
	
	-- Finish the file:
	f:write("}\n")
	f:close()
	LOG("ZBS API dumped...")
end





--- Returns true if a_Descendant is declared to be a (possibly indirect) descendant of a_Base
local function IsDeclaredDescendant(a_DescendantName, a_BaseName, a_API)
	-- Check params:
	assert(type(a_DescendantName) == "string")
	assert(type(a_BaseName) == "string")
	assert(type(a_API) == "table")
	if not(a_API[a_BaseName]) then
		return false
	end
	assert(type(a_API[a_BaseName]) == "table", "Not a class name: " .. a_BaseName)
	assert(type(a_API[a_BaseName].Descendants) == "table")
	
	-- Check direct inheritance:
	for _, desc in ipairs(a_API[a_BaseName].Descendants) do
		if (desc.Name == a_DescendantName) then
			return true
		end
	end  -- for desc - a_BaseName's descendants
	
	-- Check indirect inheritance:
	for _, desc in ipairs(a_API[a_BaseName].Descendants) do
		if (IsDeclaredDescendant(a_DescendantName, desc.Name, a_API)) then
			return true
		end
	end  -- for desc - a_BaseName's descendants
	
	return false
end





--- Checks the specified class' inheritance
-- Reports any problems as new items in the a_Report table
local function CheckClassInheritance(a_Class, a_API, a_Report)
	-- Check params:
	assert(type(a_Class) == "table")
	assert(type(a_API) == "table")
	assert(type(a_Report) == "table")
	
	-- Check that the declared descendants are really descendants:
	local registry = debug.getregistry()
	for _, desc in ipairs(a_Class.Descendants or {}) do
		local isParent = false
		local parents = registry["tolua_super"][_G[desc.Name]]
		if not(parents[a_Class.Name]) then
			table.insert(a_Report, desc.Name .. " is not a descendant of " .. a_Class.Name)
		end
	end  -- for desc - a_Class.Descendants[]
	
	-- Check that all inheritance is listed for the class:
	local parents = registry["tolua_super"][_G[a_Class.Name]]  -- map of "classname" -> true for each class that a_Class inherits
	for clsName, isParent in pairs(parents or {}) do
		if ((clsName ~= "") and not(clsName:match("const .*"))) then
			if not(IsDeclaredDescendant(a_Class.Name, clsName, a_API)) then
				table.insert(a_Report, a_Class.Name .. " inherits from " .. clsName .. " but this isn't documented")
			end
		end
	end
end





--- Checks each class's declared inheritance versus the actual inheritance
local function CheckAPIDescendants(a_API)
	-- Check each class:
	local report = {}
	for _, cls in ipairs(a_API) do
		if (cls.Name ~= "Globals") then
			CheckClassInheritance(cls, a_API, report)
		end
	end
	
	-- If there's anything to report, output it to a file:
	if (report[1] ~= nil) then
		LOG("There are inheritance errors in the API description:")
		for _, msg in ipairs(report) do
			LOG("  " .. msg)
		end

		local f, err = io.open("API/_inheritance_errors.txt", "w")
		if (f == nil) then
			LOG("Cannot report inheritance problems to a file: " .. tostring(err))
			return
		end
		f:write(table.concat(report, "\n"))
		f:close()
	end
end





local function DumpApi()
	LOG("Dumping the API...")
	
	-- Load the API descriptions from the Classes and Hooks subfolders:
	-- This needs to be done each time the command is invoked because the export modifies the tables' contents
	dofile(g_PluginFolder .. "/APIDesc.lua")
	if (g_APIDesc.Classes == nil) then
		g_APIDesc.Classes = {};
	end
	if (g_APIDesc.Hooks == nil) then
		g_APIDesc.Hooks = {};
	end
	LoadAPIFiles("/Classes/", g_APIDesc.Classes);
	LoadAPIFiles("/Hooks/",   g_APIDesc.Hooks);

	-- Reset the stats:
	g_TrackedPages = {};  -- List of tracked pages, to be checked later whether they exist. Each item is an array of referring pagenames.
	g_Stats =  -- Statistics about the documentation
	{
		NumTotalClasses = 0,
		NumUndocumentedClasses = 0,
		NumTotalFunctions = 0,
		NumUndocumentedFunctions = 0,
		NumTotalConstants = 0,
		NumUndocumentedConstants = 0,
		NumTotalVariables = 0,
		NumUndocumentedVariables = 0,
		NumTotalHooks = 0,
		NumUndocumentedHooks = 0,
		NumTrackedLinks = 0,
		NumInvalidLinks = 0,
	}
	
	-- Create the API tables:
	local API, Globals = CreateAPITables();
	
	-- Sort the classes by name:
	table.sort(API,
		function (c1, c2)
			return (string.lower(c1.Name) < string.lower(c2.Name));
		end
	);
	g_Stats.NumTotalClasses = #API;
	
	-- Add Globals into the API:
	Globals.Name = "Globals";
	table.insert(API, Globals);
	
	-- Read in the descriptions:
	LOG("Reading descriptions...");
	ReadDescriptions(API);

	-- Check that the API lists the inheritance properly, report any problems to a file:
	CheckAPIDescendants(API)
	
	-- Dump all available API objects in HTML format into a subfolder:
	DumpAPIHtml(API);
	
	-- Dump all available API objects in format used by ZeroBraneStudio API descriptions:
	DumpAPIZBS(API)
	
	LOG("APIDump finished");
	return true
end





local function HandleWebAdminDump(a_Request)
	if (a_Request.PostParams["Dump"] ~= nil) then
		DumpApi()
	end
	return
	[[
	<p>Pressing the button will generate the API dump on the server. Note that this can take some time.</p>
	<form method="POST"><input type="submit" name="Dump" value="Dump the API"/></form>
	]]
end





local function HandleCmdApi(a_Split)
	DumpApi()
	return true
end





local function HandleCmdApiShow(a_Split, a_EntireCmd)
	os.execute("API" .. cFile:GetPathSeparator() .. "index.html")
	return true, "Launching the browser to show the API docs..."
end





function Initialize(Plugin)
	g_Plugin = Plugin;
	g_PluginFolder = Plugin:GetLocalFolder();
	
	LOG("Initialising " .. Plugin:GetName() .. " v." .. Plugin:GetVersion())
	
	-- Bind a console command to dump the API:
	cPluginManager:BindConsoleCommand("api", HandleCmdApi, "Dumps the Lua API docs into the API/ subfolder")
	cPluginManager:BindConsoleCommand("apishow", HandleCmdApiShow, "Runs the default browser to show the API docs")

	-- Add a WebAdmin tab that has a Dump button
	g_Plugin:AddWebTab("APIDump", HandleWebAdminDump)
	
	return true
end