var ace = require("ace/ace");
var dom = require("ace/lib/dom");
var event = require("ace/lib/event");
var Range = require("ace/range").Range;
var EditSession = require("ace/edit_session").EditSession;
var UndoManager = require("ace/undomanager").UndoManager;
function def(o, key, get) {
    try {
        Object.defineProperty(o, key, {
            configurable: true, 
            get: get,
            set: function(val) {
                delete o[key];
                o[key] = val;
            }
        });
    } catch(e) {
        console.error(e);
    }
}
def(window, "ace", function(){  return ace });
def(window, "editor", function(){  return window.env.editor == logEditor ? editor : window.env.editor });
def(window, "session", function(){ return window.editor.session });
def(window, "split", function(){  return window.env.split });


def(window, "devUtil", function(){ return exports });

exports.addGlobals = function() {
    window.oop = require("ace/lib/oop");
    window.dom = require("ace/lib/dom");
    window.user = require("ace/test/user");
    window.Range = require("ace/range").Range;
    window.Editor = require("ace/editor").Editor;
    window.assert = require("ace/test/asyncjs/assert");
    window.UndoManager = require("ace/undomanager").UndoManager;
    window.EditSession = require("ace/edit_session").EditSession;
    window.MockRenderer = require("ace/test/mockrenderer").MockRenderer;
    window.EventEmitter = require("ace/lib/event_emitter").EventEmitter;
    
    window.getSelection = getSelection;
    window.setSelection = setSelection;
    window.testSelection = testSelection;
    window.setValue = setValue;
    window.testValue = testValue;
    window.logToAce = exports.log;
};

function getSelection(editor) {
    var data = editor.multiSelect.toJSON();
    if (!data.length) data = [data];
    data = data.map(function(x) {
        var a, c;
        if (x.isBackwards) {
            a = x.end;
            c = x.start;
        } else {
            c = x.end;
            a = x.start;
        }
        return Range.comparePoints(a, c) 
            ? [a.row, a.column, c.row, c.column]
            : [a.row, a.column];
    });
    return data.length > 1 ? data : data[0];
}
function setSelection(editor, data) {
    if (typeof data[0] == "number")
        data = [data];
    editor.selection.fromJSON(data.map(function(x) {
        var start = {row: x[0], column: x[1]};
        var end = x.length == 2 ? start : {row: x[2], column: x[3]};
        var isBackwards = Range.comparePoints(start, end) > 0;
        return isBackwards ? {
            start: end,
            end: start,
            isBackwards: true
        } : {
            start: start,
            end: end,
            isBackwards: true
        };
    }));
}
function testSelection(editor, data) {
    assert.equal(getSelection(editor) + "", data + "");
}
function setValue(editor, value) {
    editor.setValue(value, 1);
}
function testValue(editor, value) {
    assert.equal(editor.getValue(), value);
}

 
var editor;
var logEditor;
var logSession
exports.openLogView = function() {
    exports.addGlobals();
    var sp = window.env.split;
    sp.setSplits(1);
    sp.setSplits(2);
    sp.setOrientation(sp.BESIDE);
    editor = sp.$editors[0];
    logEditor = sp.$editors[1];
    
    if (!logSession) {
        logSession = new EditSession(localStorage.lastTestCase || "", "ace/mode/javascript");
        logSession.setUndoManager(new UndoManager)
    }
    logEditor.setSession(logSession);
    logEditor.session.foldAll();
    logEditor.on("input", save);
}
exports.record = function() {
    exports.addGlobals();
    exports.openLogView();
    
    logEditor.setValue("var Range = require(\"ace/range\").Range;\n"
        + getSelection + "\n"
        + testSelection + "\n"
        + setSelection + "\n"
        + testValue + "\n"
        + setValue + "\n"
        + "\n//-------------------------------------\n", 1);
    logEditor.session.foldAll();

    addAction({
        type: "setValue",
        data: editor.getValue()
    });
    addAction({
        type: "setSelection",
        data: getSelection(editor)
    });
    editor.commands.on("afterExec", onAfterExec);
    editor.on("mouseup", onMouseUp);
    editor.selection.on("beforeEndOperation", onBeforeEndOperation);
    editor.session.on("change", reportChange);
    editor.selection.on("changeCursor", reportCursorChange);
    editor.selection.on("changeSelection", reportSelectionChange);
}

exports.stop = function() {
    save();
    editor.commands.off("afterExec", onAfterExec);
    editor.off("mouseup", onMouseUp);
    editor.off("beforeEndOperation", onBeforeEndOperation);
    editor.session.off("change", reportChange);
    editor.selection.off("changeCursor", reportCursorChange);
    editor.selection.off("changeSelection", reportSelectionChange);
    logEditor.off("input", save);
}
exports.closeLogView = function() {
    exports.stop(); 
    var sp = window.env.split;
    sp.setSplits(1);
}

exports.play = function() {
    exports.openLogView();
    exports.stop();
    var code = logEditor ? logEditor.getValue() : localStorage.lastTestCase;
    var fn = new Function("editor", "debugger;\n" + code);
    fn(editor);
}
var reportChange = reportEvent.bind(null, "change");
var reportCursorChange = reportEvent.bind(null, "CursorChange");
var reportSelectionChange = reportEvent.bind(null, "SelectionChange");

function save() {
    localStorage.lastTestCase = logEditor.getValue();
}

function reportEvent(name) {
    addAction({
        type: "event",
        source: name
    });
} 
function onSelection() {
    addAction({
        type: "event",
        data: "change",
        source: "operationEnd"
    });
} 
function onBeforeEndOperation() {
    addAction({
        type: "setSelection",
        data: getSelection(editor),
        source: "operationEnd"
    });
} 
function onMouseUp() {
    addAction({
        type: "setSelection",
        data: getSelection(editor),
        source: "mouseup"
    });
}
function onAfterExec(e) {
    addAction({
        type: "exec",
        data: e
    });
    addAction({
        type: "value",
        data: editor.getValue()
    });
    addAction({
        type: "selection",
        data: getSelection(editor)
    });
}

function addAction(a) {
    var str = toString(a);
    if (str) {
        logEditor.insert(str + "\n");
        logEditor.renderer.scrollCursorIntoView();
    }
}

var lastValue = "";
function toString(x) {
    var str = "";
    var data = x.data;
    switch (x.type) {
        case "exec": 
            str = 'editor.execCommand("' 
                + data.command.name
                + (data.args ? '", ' + JSON.stringify(data.args) : '"')
            + ')';
            break;
        case "setSelection":
            str = 'setSelection(editor, ' + JSON.stringify(data)  + ')';
            break;
        case "setValue":
            if (lastValue != data) {
                lastValue = data;
                str = 'editor.setValue(' + JSON.stringify(data) + ', -1)';
            }
            else {
                return;
            }
            break;
        case "selection":
            str = 'testSelection(editor, ' + JSON.stringify(data) + ')';
            break;
        case "value":
            if (lastValue != data) {
                lastValue = data;
                str = 'testValue(editor, ' + JSON.stringify(data) + ')';
            }
            else  {
                return;
            }
            break;
    }
    return str + (x.source ? " // " + x.source : "");
}

exports.getUI = function(container) {
    return ["div", {role: "group", "aria-label": "Test"},
        " Test ", 
        ["button", {"aria-label": "Open Log View", onclick: exports.openLogView}, "O"],
        ["button", {onclick: exports.record}, "Record"],
        ["button", {onclick: exports.stop}, "Stop"],
        ["button", {onclick: exports.play}, "Play"],
        ["button", {"aria-label": "Close Log View", onclick: exports.closeLogView}, "X"],
    ];
};


var ignoreEvents = false;
exports.textInputDebugger = {
    position: 2000,
    path: "textInputDebugger",
    onchange: function(value) {
        var sp = env.split;
        if (sp.getSplits() == 2) {
            sp.setSplits(1);
        }
        if (env.textarea) {
            if (env.textarea.detach)
                env.textarea.detach();
            env.textarea.oldParent.appendChild(env.textarea);
            env.textarea.className = env.textarea.oldClassName;
            env.textarea = null;
        }
        if (value) {
            this.showConsole();
        }
    },
    showConsole: function() {
        var editor = env.split.$editors[0];
        var text = editor.textInput.getElement();
        text.oldParent = text.parentNode;
        text.oldClassName = text.className;
        text.className = "text-input-debug";
        document.body.appendChild(text);
        env.textarea = text;
        
        var addToLog = function(e) {
            if (ignoreEvents) return;
            var data = {
                _: e.type, 
                data: e.data,
                inputType: e.inputType,
                range: [text.selectionStart, text.selectionEnd], 
                value: text.value, 
                key: e.key && {
                    code: e.code,
                    key: e.key, 
                    keyCode: e.keyCode
                },
                modifier: event.getModifierString(e) || undefined
            };
            var str = JSON.stringify(data).replace(/"(\w+)":/g, " $1: ");
            exports.log(str);
        };
        var events = ["select", "input", "keypress", "keydown", "keyup", 
            "compositionstart", "compositionupdate", "compositionend", "cut", "copy", "paste"
        ];
        events.forEach(function(name) {
            text.addEventListener(name, addToLog, true);
        });
        function onMousedown(ev) {
            if (ev.domEvent.target == text)
                ev.$pos = editor.getCursorPosition();
        }
        text.detach = function() {
            delete text.value;
            delete text.setSelectionRange;
            
            events.forEach(function(name) {
                text.removeEventListener(name, addToLog, true);
            });
            editor.off("mousedown", onMousedown);
        };
        editor.on("mousedown", onMousedown);
        
        text.__defineSetter__("value", function(v) {
            this.__proto__.__lookupSetter__("value").call(this, v); 
            console.log(v);
        });
        text.__defineGetter__("value", function(v) {
            var v = this.__proto__.__lookupGetter__("value").call(this); 
            return v;
        });
        text.setSelectionRange = function(start, end) {
            ignoreEvents = true;
            this.__proto__.setSelectionRange.call(this, start, end)
            ignoreEvents = false;
        }
        exports.openConsole();
        editor.focus();
    },
    getValue: function() {
        return !!env.textarea;
    }
};

exports.textPositionDebugger = {
    position: 2000,
    path: "textPositionDebugger",
    onchange: function(value) {
        document.body.classList[value ? "add" : "remove"]("show-text-input")
    },
    getValue: function() {
        return document.body.classList.contains("show-text-input");
    }
};

exports.openConsole = function() {
    var sp = env.split;
    var logEditor = sp.$editors[1];
    if (!logEditor) {
        sp.setSplits(2);
        sp.setOrientation(sp.BELOW);
        logEditor = sp.$editors[1];
    }
    if (!exports.session)
        exports.session = new EditSession("");
    logEditor.setSession(exports.session);
    return logEditor
};
exports.log = function(str) {   
    var logEditor = exports.openConsole();
    logEditor.navigateFileEnd();
    logEditor.insert(str + ",\n");
    logEditor.renderer.scrollCursorIntoView();
};

exports.addGlobals();
