var express = require('express');
var router = express.Router();
var msg_p2p = require("../models/msg_p2p");
var msg_statistic = require("../models/msg_statistic");
var user = require("../models/user");
var push = require("../models/push_notify");
var getui = require('getui');

/**
 * 一对一消息:p2p/sendmsg.im?from_uid=x&to_uid=xx&content=xxx&type=1
 * 参数：
 * from_uid：发送者id
 * to_uid：接收者id
 * content：消息内容
 * type：消息类型：1文本，2图片，3语音
 */
router.get('/sendmsg.im', function (req, res, next) {
    if (req.query.from_uid == null
        || req.query.to_uid == null
        || req.query.content == null
        || req.query.type == null) {
        res.send({errno: -1, errmsg: 'parameter error'});
        return;
    }

    msg_p2p.isUserExist(req.query.to_uid, function (err, result) {
        if (err) {
            res.send({errno: 1, errmsg: 'get users from db error'});
            return;
        }

        if (result.length == 0) {
            res.send({errno: 2, errmsg: 'no receive users'});
            return;
        }

        // 保存一对一消息
        msg_p2p.saveP2PMsg(req.query.to_uid, req.query.from_uid, req.query.type, req.query.content, function (err, result) {
            if (err) {
                res.send({errno: 3, errmsg: 'save msg to db error'});
                return;
            }
            res.send({errno: 0, errmsg: 'send p2p msg success'});

            // 更新自身的聊天统计信息
            msg_statistic.updateP2PChatInfo(req.query.from_uid,
                req.query.to_uid,
                req.query.from_uid,
                req.query.type,
                req.query.content,
                function (err, result) {
                    if (err) {
                        console.log(err);
                    }
                });
            // 更新对端的聊天统计信息
            msg_statistic.updateP2PChatInfo(req.query.to_uid,
                req.query.from_uid,
                req.query.from_uid,
                req.query.type,
                req.query.content,
                function (err, result) {
                    if (err) {
                        console.log(err);
                    }
                });

            // 推送通知消息给对端
            user.getUserbyID(req.query.to_uid, function (err, result) {
                if (err) {
                    console.log('group msg:get user by id from db failed');
                    return;
                }
                var title = '';
                var content = '';
                if (req.query.type == 1) {
                    title = '新消息';
                    content = req.query.content;
                } else if (req.query.type == 2) {
                    title = '新消息';
                    content = '接收到 [图片]';
                } else if (req.query.type == 3) {
                    title = '新消息';
                    content = '接收到 [语音]';
                } else {
                    title = '新消息';
                    content = '接收到一条新消息';
                }

                var bMustPush = 0;
                var data;
                if (result.length > 0) {
                    data = result[0];
                    if (data.is_online) {
                        bMustPush = 1;
                    }
                }
                var push_data = JSON.stringify({
                    type:'p2p_msg',
                    from_uid:req.query.from_uid
                });
                // 保存通知到数据库中
                push.savePushNotify(req.query.to_uid,
                    req.query.type,
                    title,
                    content,
                    push_data,
                    bMustPush,
                    function (err, result) {
                        if (err) {
                            // 保存失败
                            console.log('save msg to db failed');
                        } else {
                            console.log('save msg to db success');
                            if (bMustPush == true) {
                                if (data.platform == 0) {// iOS
                                    getui.pushAPN(req.query.to_uid,
                                        data.token,
                                        req.query.type,
                                        title,
                                        content,
                                        push_data,
                                        function (err, result) {
                                            if (err != null) {
                                                console.log(err);
                                            } else {
                                                console.log(result);
                                            }
                                        });
                                } else {// Android
                                    getui.pushAndroid(data.client_id,
                                        req.query.type,
                                        title,
                                        content,
                                        push_data,
                                        data.status,
                                        function (err, result) {
                                            if (err != null) {
                                                console.log(err);
                                            } else {
                                                console.log(result);
                                            }
                                        });
                                }
                            }
                        }
                    });
            });
        });
    });
});

/**
 * 一对一消息:p2p/getmsg.im?uid=x&peer_uid=xx&start=0&count=20
 * 参数：
 * uid：用户id
 * peer_uid：对端id
 * start；分页查询起始条目
 * count：查询条数
 * 备注：按时间倒序
 */
router.get('/getmsg.im', function (req, res, next) {
    if (req.query.uid == null
        || req.query.peer_uid == null
        || req.query.start == null
        || req.query.count == null) {
        res.send({errno: -1, errmsg: 'parameter error'});
        return;
    }

    msg_p2p.getP2PMsg(req.query.uid, req.query.peer_uid, req.query.start, req.query.count, function (err, result) {
        if (err) {
            res.send({errno: 1, errmsg: 'get group msg from db error'});
            return;
        }

        var data = {};
        data.start = parseInt(req.query.start);
        data.count = result.length;
        data.list = new Array();
        for (var nIndex = 0; nIndex < result.length; nIndex++) {
            result[nIndex].timestamp = Date.parse(new Date(result[nIndex].timestamp));
            data.list.push(result[nIndex]);
        }

        res.send(data);

        // 清空统计信息
        msg_statistic.clearP2PChatInfo(req.query.uid,
            req.query.peer_uid,
            function (err, result) {
                if (err) {
                    console.log(err);
                }
            });
    });
});

module.exports = router;