/* @depend ../sinon.js */
/*jslint eqeqeq: false, onevar: false, plusplus: false*/
/*global module, require, sinon*/
/**
 * Match functions
 *
 * @author Maximilian Antoni (mail@maxantoni.de)
 * @license BSD
 *
 * Copyright (c) 2012 Maximilian Antoni
 */
"use strict";

(function (sinon) {
    var commonJSModule = typeof module !== "undefined" && module.exports && typeof require == "function";

    if (!sinon && commonJSModule) {
        sinon = require("../sinon");
    }

    if (!sinon) {
        return;
    }

    function assertType(value, type, name) {
        var actual = sinon.typeOf(value);
        if (actual !== type) {
            throw new TypeError("Expected type of " + name + " to be " +
                type + ", but was " + actual);
        }
    }

    var matcher = {
        toString: function () {
            return this.message;
        }
    };

    function isMatcher(object) {
        return matcher.isPrototypeOf(object);
    }

    function matchObject(expectation, actual) {
        if (actual === null || actual === undefined) {
            return false;
        }
        for (var key in expectation) {
            if (expectation.hasOwnProperty(key)) {
                var exp = expectation[key];
                var act = actual[key];
                if (match.isMatcher(exp)) {
                    if (!exp.test(act)) {
                        return false;
                    }
                } else if (sinon.typeOf(exp) === "object") {
                    if (!matchObject(exp, act)) {
                        return false;
                    }
                } else if (!sinon.deepEqual(exp, act)) {
                    return false;
                }
            }
        }
        return true;
    }

    matcher.or = function (m2) {
        if (!arguments.length) {
            throw new TypeError("Matcher expected");
        } else if (!isMatcher(m2)) {
            m2 = match(m2);
        }
        var m1 = this;
        var or = sinon.create(matcher);
        or.test = function (actual) {
            return m1.test(actual) || m2.test(actual);
        };
        or.message = m1.message + ".or(" + m2.message + ")";
        return or;
    };

    matcher.and = function (m2) {
        if (!arguments.length) {
            throw new TypeError("Matcher expected");
        } else if (!isMatcher(m2)) {
            m2 = match(m2);
        }
        var m1 = this;
        var and = sinon.create(matcher);
        and.test = function (actual) {
            return m1.test(actual) && m2.test(actual);
        };
        and.message = m1.message + ".and(" + m2.message + ")";
        return and;
    };

    var match = function (expectation, message) {
        var m = sinon.create(matcher);
        var type = sinon.typeOf(expectation);
        switch (type) {
        case "object":
            if (typeof expectation.test === "function") {
                m.test = function (actual) {
                    return expectation.test(actual) === true;
                };
                m.message = "match(" + sinon.functionName(expectation.test) + ")";
                return m;
            }
            var str = [];
            for (var key in expectation) {
                if (expectation.hasOwnProperty(key)) {
                    str.push(key + ": " + expectation[key]);
                }
            }
            m.test = function (actual) {
                return matchObject(expectation, actual);
            };
            m.message = "match(" + str.join(", ") + ")";
            break;
        case "number":
            m.test = function (actual) {
                return expectation == actual;
            };
            break;
        case "string":
            m.test = function (actual) {
                if (typeof actual !== "string") {
                    return false;
                }
                return actual.indexOf(expectation) !== -1;
            };
            m.message = "match(\"" + expectation + "\")";
            break;
        case "regexp":
            m.test = function (actual) {
                if (typeof actual !== "string") {
                    return false;
                }
                return expectation.test(actual);
            };
            break;
        case "function":
            m.test = expectation;
            if (message) {
                m.message = message;
            } else {
                m.message = "match(" + sinon.functionName(expectation) + ")";
            }
            break;
        default:
            m.test = function (actual) {
              return sinon.deepEqual(expectation, actual);
            };
        }
        if (!m.message) {
            m.message = "match(" + expectation + ")";
        }
        return m;
    };

    match.isMatcher = isMatcher;

    match.any = match(function () {
        return true;
    }, "any");

    match.defined = match(function (actual) {
        return actual !== null && actual !== undefined;
    }, "defined");

    match.truthy = match(function (actual) {
        return !!actual;
    }, "truthy");

    match.falsy = match(function (actual) {
        return !actual;
    }, "falsy");

    match.same = function (expectation) {
        return match(function (actual) {
            return expectation === actual;
        }, "same(" + expectation + ")");
    };

    match.typeOf = function (type) {
        assertType(type, "string", "type");
        return match(function (actual) {
            return sinon.typeOf(actual) === type;
        }, "typeOf(\"" + type + "\")");
    };

    match.instanceOf = function (type) {
        assertType(type, "function", "type");
        return match(function (actual) {
            return actual instanceof type;
        }, "instanceOf(" + sinon.functionName(type) + ")");
    };

    function createPropertyMatcher(propertyTest, messagePrefix) {
        return function (property, value) {
            assertType(property, "string", "property");
            var onlyProperty = arguments.length === 1;
            var message = messagePrefix + "(\"" + property + "\"";
            if (!onlyProperty) {
                message += ", " + value;
            }
            message += ")";
            return match(function (actual) {
                if (actual === undefined || actual === null ||
                        !propertyTest(actual, property)) {
                    return false;
                }
                return onlyProperty || sinon.deepEqual(value, actual[property]);
            }, message);
        };
    }

    match.has = createPropertyMatcher(function (actual, property) {
        if (typeof actual === "object") {
            return property in actual;
        }
        return actual[property] !== undefined;
    }, "has");

    match.hasOwn = createPropertyMatcher(function (actual, property) {
        return actual.hasOwnProperty(property);
    }, "hasOwn");

    match.bool = match.typeOf("boolean");
    match.number = match.typeOf("number");
    match.string = match.typeOf("string");
    match.object = match.typeOf("object");
    match.func = match.typeOf("function");
    match.array = match.typeOf("array");
    match.regexp = match.typeOf("regexp");
    match.date = match.typeOf("date");

    sinon.match = match;

    if (typeof define === "function" && define.amd) {
        define(["module"], function(module) { module.exports = match; });
    } else if (commonJSModule) {
        module.exports = match;
    }
}(typeof sinon == "object" && sinon || null));