#!/usr/bin/env node
"use strict";
"use server";

require("amd-loader");
var assert = require("assert");
var fs = require("fs");
var tmp = require("tmp");
var http = require("http");
var localfs = require("vfs-local");
var download = require("./download");
var urlParse = require('url').parse;
var execFile = require('child_process').execFile;

module.exports = {

    timeout: 4000,

    setUp: function(next) {
        var that = this;
        var vfs = localfs({root: "/"});
        download({}, {
            "Plugin": function() {
                var that = this;
                this.freezePublicAPI = function(api) {
                    for (var key in api)
                        that[key] = api[key];
                };
            },
            "vfs.cache": {
                registerExtension: function() {  }
            }
        }, function(err, api) {
            var download = api["vfs.download"].download;
            that.server = http.createServer(function(req, res, next) {
                req.uri = urlParse(req.url, true);
                download(vfs, __dirname, req, res, function(err) {
                    console.log("download failed", err);
                    assert.fail(err);
                });
            });
            that.server.listen(8787, "0.0.0.0", next);
        });
    },

    tearDown: function(next) {
        this.server.close(next);
    },

    "test download": function(next) {
        tmp.dir({unsafeCleanup: true}, function(err, path) {
            var filename = path + "/download.tar.gz";
            var file = fs.createWriteStream(filename);
            http.get("http://localhost:8787/?download=download.tar.gz", function(res) {
                assert.equal(res.headers["content-type"], "application/x-gzip");
                assert.equal(res.headers["content-disposition"], "attachment; filename*=utf-8''download.tar.gz");

                res.pipe(file);
                
                res.on("end", function() {
                    execFile("tar", ["-zxvf", filename, "c9.vfs.server/download.js"], {cwd: path}, function(err, stdout, stderr) {
                        assert.equal(err, null);
                        assert.equal(
                            fs.readFileSync(__dirname + "/download.js", "utf8"),
                            fs.readFileSync(path + "/c9.vfs.server/download.js", "utf8")
                        );
                        next();
                    });
                });
            });
        });
    },
    
    "test download sub directory": function(next) {
        tmp.dir({unsafeCleanup: true}, function(err, path) {
            var filename = path + "/download.tar.gz";
            var file = fs.createWriteStream(filename);
            http.get("http://localhost:8787/views?download=download.tar.gz", function(res) {
                res.pipe(file);
                
                res.on("end", function() {
                    execFile("tar", ["-zxvf", filename, "views/status.html.ejs"], {cwd: path}, function(err) {
                        assert.equal(err, null);
                        assert.equal(
                            fs.readFileSync(__dirname + "/views/status.html.ejs", "utf8"),
                            fs.readFileSync(path + "/views/status.html.ejs", "utf8")
                        );
                        next();
                    });
                });
            });
        });
    },
    
    "test download without specifying a name": function(next) {
        tmp.dir({unsafeCleanup: true}, function(err, path) {
            var filename = path + "/download.tar.gz";
            var file = fs.createWriteStream(filename);
            http.get("http://localhost:8787/views?download", function(res) {
                assert.equal(res.headers["content-type"], "application/x-gzip");
                assert.equal(res.headers["content-disposition"], "attachment; filename*=utf-8''views.tar.gz");
                
                res.pipe(file);
                
                res.on("end", function() {
                    execFile("tar", ["-zxvf", filename, "views/status.html.ejs"], {cwd: path}, function(err) {
                        assert.equal(err, null);
                        assert.equal(
                            fs.readFileSync(__dirname + "/views/status.html.ejs", "utf8"),
                            fs.readFileSync(path + "/views/status.html.ejs", "utf8")
                        );
                        next();
                    });
                });
            });
        });
    }
};

!module.parent && require("asyncjs").test.testcase(module.exports).exec();