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/*
 Copyright (C) 2013 Povilas Kanapickas <povilas@radix.lt>
 
 This file is part of cppreference.com
 
 This program is free software: you can redistribute it and/or modify
 it under the terms of the GNU General Public License as published by
 the Free Software Foundation, either version 2 of the License, or
 (at your option) any later version.
 
 This program is distributed in the hope that it will be useful,
 but WITHOUT ANY WARRANTY; without even the implied warranty of
 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
 GNU General Public License for more details.
 
 You should have received a copy of the GNU General Public License
 along with this program. If not, see http://www.gnu.org/licenses/.
*/
 
String.prototype.trim = function () {
 return this.replace(/^\s+|\s+$/g, "");
};
 
/* We add two new divs for the live editor and the program output. The divs are
 inserted after the geshi code and output respectively. This way the ACE
 editor and the compilation output are independent from the static geshi
 text. We can easily switch between the live editor and the static version.
*/
function Editor(root) {
 
 var cmd_info_cxx = {
 cc: [
 { title: 'GCC 4.9 (C++98)', cmd: 'g++-4.9 -std=c++98 ' },
 { title: 'GCC 4.9 (C++11)', cmd: 'g++-4.9 -std=c++11 ', opt_suff: ' -latomic ' },
 { title: 'GCC 4.9 (C++14)', cmd: 'g++-4.9 -std=c++14 ', opt_suff: ' -latomic ' },
 { title: 'GCC 5.2 (C++98)', cmd: 'g++-5.2 -std=c++98 ' },
 { title: 'GCC 5.2 (C++11)', cmd: 'g++-5.2 -std=c++11 ', opt_suff: ' -latomic ' },
 { title: 'GCC 5.2 (C++14)', cmd: 'g++-5.2 -std=c++14 ', opt_suff: ' -latomic ' },
 { title: 'GCC 5.2 (C++17)', cmd: 'g++-5.2 -std=c++1z ', opt_suff: ' -latomic ' },
 { title: 'GCC 13.1 (C++98)', cmd: 'g++ -std=c++98 ' },
 { title: 'GCC 13.1 (C++11)', cmd: 'g++ -std=c++11 ', opt_suff: ' -latomic ' },
 { title: 'GCC 13.1 (C++14)', cmd: 'g++ -std=c++14 ', opt_suff: ' -latomic ' },
 { title: 'GCC 13.1 (C++17)', cmd: 'g++ -std=c++17 ', opt_suff: ' -latomic ' },
 { title: 'GCC 13.1 (C++20)', cmd: 'g++ -std=c++20 ', opt_suff: ' -latomic ' },
 { title: 'GCC 13.1 (C++23)', cmd: 'g++ -std=c++23 ', opt_suff: ' -latomic ' },
 { title: 'clang 5.0 (C++98)', cmd: 'clang++ -std=c++98 -stdlib=libc++ ' },
 { title: 'clang 5.0 (C++11)',
 cmd: 'clang++ -std=c++11 -stdlib=libc++ ',
 opt_suff: ' -latomic -lsupc++ '
 },
 { title: 'clang 5.0 (C++14)',
 cmd: 'clang++ -std=c++14 -stdlib=libc++ ',
 opt_suff: ' -latomic -lsupc++ '
 },
 { title: 'clang 5.0 (C++17)',
 cmd: 'clang++ -std=c++17 -stdlib=libc++ ',
 opt_suff: ' -latomic -lsupc++ '
 }
 ],
 default_id: 12, // => GCC 13.1 (C++23)
 opt: ' -O2 -Wall -Wextra -pedantic -pthread -pedantic-errors main.cpp -lm ',
 }
 
 var cmd_info_c = {
 cc: [
 { title: 'GCC 4.9 (C89)', cmd: 'gcc-4.9 -x c -std=c89 ' },
 { title: 'GCC 4.9 (C99)', cmd: 'g++-4.9 -x c -std=c99 ' },
 { title: 'GCC 4.9 (C11)', cmd: 'g++-4.9 -x c -std=c11 ', opt_suff: ' -latomic ' },
 { title: 'GCC 5.2 (C89)', cmd: 'g++-5.2 -x c -std=c89 ' },
 { title: 'GCC 5.2 (C99)', cmd: 'g++-5.2 -x c -std=c99 ' },
 { title: 'GCC 5.2 (C11)', cmd: 'g++-5.2 -x c -std=c11 ', opt_suff: ' -latomic ' },
 { title: 'GCC 13.1 (C89)', cmd: 'g++ -x c -std=c89 ' },
 { title: 'GCC 13.1 (C99)', cmd: 'g++ -x c -std=c99 ' },
 { title: 'GCC 13.1 (C11)', cmd: 'g++ -x c -std=c11 ', opt_suff: ' -latomic ' },
 { title: 'GCC 13.1 (C17)', cmd: 'g++ -x c -std=c17 ', opt_suff: ' -latomic ' },
 { title: 'GCC 13.1 (C23)', cmd: 'g++ -x c -std=c2x ', opt_suff: ' -latomic ' },
 { title: 'clang 5.0 (C89)', cmd: 'clang -x c -std=c89 -Wno-newline-eof ' },
 { title: 'clang 5.0 (C99)', cmd: 'clang++ -x c -std=c99 -Wno-newline-eof '},
 { title: 'clang 5.0 (C11)',
 cmd: 'clang++ -x c -std=c11 -Wno-newline-eof ',
 opt_suff: ' -latomic '}
 ],
 default_id: 10, // => GCC 13.1 (C23)
 opt: ' -O2 -Wall -Wextra -pedantic -pthread -pedantic-errors main.cpp -lm ',
 }
 
 this.check_is_cxx = function() {
 if (mw.config.get('wgTitle').indexOf('c/') == 0) {
 return false;
 } else {
 return true;
 }
 };
 
 if (this.check_is_cxx()) {
 this.cmd_info = cmd_info_cxx;
 } else {
 this.cmd_info = cmd_info_c;
 }
 
 this.cmd_run_normal = ' 2>&1 | sed "s/^/☘/"; if [ -x a.out ]; then ./a.out | sed "s/^/☢/"; fi'
 this.cmd_run_share = ' && ./a.out';
 
 this.el = {};
 this.el.root = root;
 this.is_orig = true;
 
 this.el.action_bar = this.el.root.children('.t-example-live-link:first');
 
 // initialize the action bar
 this.el.run_init_btn = this.el.action_bar.children('.coliru-btn-run-init');
 this.el.run_btn = $('<div>Run</div>')
 .addClass('coliru-btn coliru-btn-run')
 .hide().appendTo(this.el.action_bar);
 this.el.share_btn = $('<div>Share</div>')
 .addClass('coliru-btn coliru-btn-share')
 .hide().appendTo(this.el.action_bar);
 this.el.exit_btn = $('<div>Exit</div>')
 .addClass('coliru-btn coliru-btn-exit')
 .hide().appendTo(this.el.action_bar);
 
 this.el.cc_select_div = $('<div/>')
 .addClass('coliru-select-compiler')
 .hide().appendTo(this.el.action_bar);
 this.el.cc_select = $('<select/>').appendTo(this.el.cc_select_div);
 
 for (var i = 0; i < this.cmd_info.cc.length; ++i) {
 var cmd = this.cmd_info.cc[i];
 $('<option/>').text(cmd.title).attr('value', i.toString())
 .appendTo(this.el.cc_select);
 }
 this.el.cc_select.val(this.cmd_info.default_id.toString());
 
 this.el.pwr = $('<div>Powered by <a href="https://coliru.stacked-crooked.com">Coliru</a> online compiler</div>')
 .addClass('coliru-powered')
 .hide().appendTo(this.el.action_bar);
 
 // find and store the original code and output divs
 orig_code = this.el.root.children('.mw-geshi:first');
 if (orig_code.length > 0) {
 this.has_orig_code = true;
 this.el.orig_code = orig_code.first();
 } else {
 this.has_orig_code = false;
 this.el.orig_code = $('<div/>').hide().insertAfter(this.el.action_bar);
 }
 
 orig_output = this.el.root.children('.mw-geshi:last');
 if (orig_output.length > 0 && !orig_output.is(orig_code)) {
 this.has_orig_output = true;
 this.el.orig_output = orig_output.first();
 } else {
 this.has_orig_output = false;
 this.el.output_p = $('<p>Output:</p>').hide().insertAfter(this.el.orig_code);
 this.el.orig_output = $('<div/>').hide().insertAfter(this.el.output_p);
 }
 
 if (this.has_orig_code) {
 this.source_code = this.el.orig_code.text().replace(/\u00a0/g, " ");
 } else {
 this.source_code = '';
 }
 
 // initialize the editor
 this.el.edited_code = $('<div/>').addClass('t-example-code mw-geshi')
 .hide().insertAfter(this.el.orig_code);
 this.el.editor_div = $('<div/>').addClass('ace_editor ace-tm')
 .appendTo(this.el.edited_code);
 this.editor = ace.edit(this.el.editor_div.get(0));
 this.editor.setTheme("ace/theme/textmate");
 this.editor.getSession().setMode("ace/mode/c_cpp");
 
 this.editor.commands.bindKeys({"Ctrl-l":null});
 this.editor.commands.bindKeys({"Ctrl-t":null});
 this.editor.commands.bindKeys({"Command-l":null});
 this.editor.commands.addCommand({
 name: 'Build and run',
 bindKey: {win: 'Ctrl-B', mac: 'Command-B'},
 exec: function(editor) { this.compile_now(); },
 readOnly: true
 });
 this.editor.commands.addCommand({
 name: 'Disable Ctrl-S',
 bindKey: {win: 'Ctrl-S', mac: 'Command-S'},
 exec: function(editor) {},
 readOnly: true
 });
 
 this.editor.getSession().setValue(this.source_code);
 
 // create compiler output block
 this.el.compiler_output_p = $('<p>Compiler messages:</p>')
 .hide().insertAfter(this.el.edited_code);
 this.el.compiler_output = $('<div/>').addClass('coliru-output coliru-output-compiler mw-geshi')
 .hide().insertAfter(this.el.compiler_output_p);
 this.el.compiler_output_div = $('<div/>').appendTo(this.el.compiler_output);
 
 // create output block
 this.el.edited_output = $('<div/>').addClass('coliru-output coliru-output-program mw-geshi')
 .hide().insertAfter(this.el.orig_output);
 this.el.output_div = $('<div/>').appendTo(this.el.edited_output);
 
 this.reset_editor = function() {
 this.editor.getSession().setValue(this.source_code);
 };
 
 this.el.run_btn.click(function() {
 if (!this.el.run_btn.hasClass('coliru-btn-disabled')) {
 this.compile_now();
 }
 }.bind(this));
 this.el.share_btn.click(function() {
 if (!this.el.share_btn.hasClass('coliru-btn-disabled')) {
 this.share();
 }
 }.bind(this));
 this.el.exit_btn.click(function() {
 if (!this.el.exit_btn.hasClass('coliru-btn-disabled')) {
 this.restore_orig();
 }
 }.bind(this));
 
 this.enable_ui = function(value) {
 this.editor.setReadOnly(!value);
 
 if (value) {
 this.el.run_btn.removeClass('coliru-btn-disabled');
 this.el.share_btn.removeClass('coliru-btn-disabled');
 this.el.exit_btn.removeClass('coliru-btn-disabled');
 } else {
 this.el.run_btn.addClass('coliru-btn-disabled');
 this.el.share_btn.addClass('coliru-btn-disabled');
 this.el.exit_btn.addClass('coliru-btn-disabled');
 }
 };
 
 this.send = function(location, cmd, src, f) {
 this.enable_ui(false);
 
 // Avoid trailing newline errors
 if (src.lastIndexOf('\n') !== src.length - 1) {
 src += '\n';
 }
 
 var http_request = new XMLHttpRequest();
 http_request.open("POST",
 "https://coliru.stacked-crooked.com/" + location, true);
 var parent = this;
 http_request.onreadystatechange = function() {
 if (http_request.readyState == 4) {
 parent.enable_ui(true);
 if (http_request.status == 200) {
 parent.last_result = http_request.responseText.trim();
 f({src: parent.editor.getValue(),
 cmd: parent.cmd,
 output: parent.last_result});
 }
 }
 };
 var post_data = JSON.stringify({
 "cmd" : cmd, "src" : src
 });
 http_request.send(post_data);
 };
 
 this.compile_now = function() {
 var parent = this;
 this.editor.getSession().clearAnnotations();
 this.el.compiler_output_p.fadeOut('fast');
 this.el.compiler_output.fadeOut('fast');
 
 this.el.output_div.html('Building and running...');
 
 var cmd = this.get_cmd(false);
 var src = this.editor.getValue();
 
 this.send("compile", cmd, src, function(obj) {
 var lines = obj.output.split(/\n/);
 
 // analyze the compiler output
 var annotations = [];
 var annotation_lines = [];
 
 var program_output = '';
 var compiler_output = '';
 
 for (var i = 0; i !== lines.length; ++i) {
 var line = lines[i];
 
 var is_compile_output = false;
 var is_shell_output = false;
 
 if (line.indexOf('☘') == 0) {
 is_compile_output = true;
 line = line.substring(1);
 } else if (line.indexOf('☢') == 0) {
 line = line.substring(1);
 } else {
 // everything else comes from the shell. Presumably, this
 // indicates a serious error in the program
 // (e.g. it segfaults).
 // FIXME: probably need a better API
 is_shell_output = true;
 }
 
 if (line !== '') {
 
 line = line.replace(/</g, '&lt').replace(/>/g, '&gt');
 
 if (is_compile_output) {
 // check if line contains an error
 var has_error = false, has_any_error = false;
 var error_lineno = 0;
 var error_text = "";
 
 var match = line.match(/^main.cpp:(\d+):\d+:(.*)/);
 if (match) {
 has_error = true;
 error_lineno = parseInt(match[1]);
 error_text = match[2].trim();
 }
 
 // add annotation if possible
 if (has_error) {
 if (annotation_lines.indexOf(error_lineno) === -1) {
 var error_type = 'error';
 if (error_text.match(/^warning:/)) {
 error_type = 'warning';
 }
 
 annotation_lines.push(error_lineno);
 annotations.push({row: error_lineno-1, column: 0,
 text: error_text, type:error_type});
 }
 }
 
 // highlight the output line if possible
 pre_open = '<pre';
 if (has_error) {
 pre_open += ' onclick="window.jump_to_error(this, '
 + error_lineno + ')" onmouseover="window.highlight_error(this, true)" onmouseout="window.highlight_error(this, false)"';
 }
 pre_open += '>';
 pre_close = '</pre>';
 compiler_output += pre_open + line + pre_close;
 } else if (is_shell_output) {
 pre_open = '<pre class="coliru-output-line-shell">';
 pre_close = '</pre>';
 program_output += pre_open + line + pre_close;
 } else {
 pre_open = '<pre class="coliru-output-line-exe">';
 pre_close = '</pre>';
 program_output += pre_open + line + pre_close;
 }
 } else {
 program_output += '<br/>';
 }
 }
 
 parent.el.output_div.html(program_output);
 
 if (compiler_output !== '') {
 parent.el.compiler_output_div.html(compiler_output);
 parent.el.compiler_output_p.fadeIn('fast');
 parent.el.compiler_output.fadeIn('fast');
 }
 
 // mark the errors in the code
 window.setTimeout(function() {
 parent.editor.getSession().setAnnotations(annotations);
 }, 100);
 });
 };
 
 this.share = function() {
 var cmd = this.get_cmd(true);
 var src = this.editor.getValue();
 
 this.send("share", cmd, src, function (obj) {
 var url = "https://coliru.stacked-crooked.com/view?id=" + obj.output;
 window.open(url, '_blank');
 })
 };
 
 this.get_cmd = function(is_shared) {
 var val = this.el.cc_select.val();
 var cc = this.cmd_info.cc[parseInt(val)].cmd;
 cc = cc + this.cmd_info.opt
 if (this.cmd_info.cc[parseInt(val)].opt_suff !== undefined) {
 cc = cc + this.cmd_info.cc[parseInt(val)].opt_suff;
 }
 if (is_shared) {
 return cc + this.cmd_run_share;
 } else {
 return cc + this.cmd_run_normal;
 }
 };
 
 this.replace_orig = function() {
 if (!this.is_orig) {
 return; // already replaced
 }
 
 this.el.root.height(this.el.root.height());
 
 var parent = this;
 this.el.run_init_btn.fadeOut("fast", function() {
 parent.el.run_btn.fadeIn("fast").css("display","inline-block");
 parent.el.share_btn.fadeIn("fast").css("display","inline-block");
 parent.el.exit_btn.fadeIn("fast").css("display","inline-block");
 parent.el.cc_select_div.fadeIn("fast").css("display","inline-block");
 parent.el.pwr.fadeIn("fast").css("display","inline-block");
 });
 
 this.el.orig_code.fadeOut("fast", function() {
 parent.el.edited_code.fadeIn("fast");
 });
 this.el.orig_output.fadeOut("fast", function() {
 if (!parent.has_orig_output) {
 parent.el.output_p.fadeIn('fast');
 }
 parent.el.edited_output.fadeIn("fast", function() {
 parent.el.root.height('auto');
 });
 });
 
 this.is_orig = false;
 };
 
 this.restore_orig = function() {
 if (this.is_orig) {
 return; // already replaced
 }
 
 this.el.root.height(this.el.root.height());
 
 var parent = this;
 
 this.el.run_btn.fadeOut("fast", function() {
 parent.el.run_init_btn.fadeIn("fast").css("display","inline-block");
 });
 this.el.share_btn.fadeOut("fast");
 this.el.exit_btn.fadeOut("fast");
 this.el.cc_select_div.fadeOut("fast");
 this.el.pwr.fadeOut("fast");
 
 this.el.edited_code.fadeOut("fast", function() {
 parent.el.orig_code.fadeIn("fast");
 });
 
 this.el.compiler_output_p.fadeOut('fast');
 this.el.compiler_output.fadeOut('fast');
 
 if (!this.has_orig_output) {
 this.el.output_p.fadeOut('fast');
 }
 
 var parent = this;
 this.el.edited_output.fadeOut("fast", function() {
 parent.el.orig_output.fadeIn("fast", function() {
 parent.el.root.height('auto');
 });
 });
 
 this.is_orig = true;
 };
 
 this.enable_ui(true);
};
 
function get_script_cached(url, callback) {
 return $.ajax({
 type: "GET",
 url: url,
 success: callback,
 dataType: "script",
 cache: true
 });
};
 
window.highlight_error = function(node, b) {
 node.style.cursor = b ? 'pointer' : 'auto';
};
 
window.jump_to_error = function(node, lineno) {
 var root = $(node).parents('.t-example');
 if (root.length > 0) {
 for (var i = 0; i < editors.length; ++i) {
 if (editors[i].el.root.is(root)) {
 var editor = editors[i];
 editor.editor.gotoLine(lineno, 0, true);
 editor.editor.focus();
 }
 }
 }
};
 
var editors = [];
 
$.when(
 get_script_cached('https://cdn.jsdelivr.net/ace/1.2.4/noconflict/ace.js')
).done(function() {
 $.when(
 get_script_cached('https://cdn.jsdelivr.net/ace/1.2.4/noconflict/mode-c_cpp.js'),
 $.Deferred(function(deferred) {
 $(deferred.resolve);
 })
 ).done(function() {
 $('.t-example-live-link > a').each(function() {
 $(this).replaceWith('<div class="coliru-btn coliru-btn-run-init">Run this code</div>');
 });
 $('.t-example > .mw-geshi:first').each(function() {
 $(this).addClass('t-example-code');
 });
 
 $('.coliru-btn-run-init').click(function() {
 var root = $(this).parent().parent();
 
 // find the editor for this root element
 var i;
 for (i = 0; i < editors.length; ++i) {
 if (editors[i].el.root.is(root)) {
 break;
 }
 }
 if (i == editors.length) {
 editors[i] = new Editor(root);
 }
 
 var editor = editors[i];
 editor.replace_orig();
 editor.compile_now();
 });
 });
});