/**
 * 消息控制器。
 *
 * 此控制器处理点对点，组及消息消息。为三类消息提供发送及查询功能。
 */
var http = require('http');
var qs = require('querystring');
var getui = require('getui');

var endpoints = require('../include/endpoints').END_POINTS;
var express = require('express');
var router = express.Router();

var groupMsg = require("../models/msg.group");
var privateMsg = require('../models/msg.p2p');
var StatMsg = require("../models/msg.stat");
var systemMsg = require("../models/msg.system");
var user = require("../models/user");
var push = require("../models/push_notify");

/**
 * 发送P2P消息。
 *
 * 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.post(endpoints.Msg.Privates, 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;
    }

    privateMsg.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
        privateMsg.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
            StatMsg.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
            StatMsg.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 users 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);
                                            }
                                        });
                                }
                            }
                        }
                    });
            });
        });
    });
});

/**
 * 获取P2P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(endpoints.Msg.Privates, 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;
    }

    privateMsg.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
        StatMsg.clearP2PChatInfo(req.query.uid,
            req.query.peer_uid,
            function (err, result) {
                if (err) {
                    console.log(err);
                }
            });
    });
});

/**
 * 发送群组消息。
 *
 * group/sendmsg.im?from_uid=x&to_gid=xx&content=xxx&type=1&at_uid=xxxx&group_type
 *
 * 参数：
 * from_uid：发送者id
 * to_gid：群组id
 * content：消息内容
 * type：消息类型：1文本，2图片，3语音
 * at_uid：@用户id：1为行政组，null或者其他值为自定义组
 * group_type：区分是行政组还是自定义组，从不同表中查找组成员
 */
router.post(endpoints.Msg.Groups, function (req, res, next) {
    if (req.query.from_uid == null
        || req.query.to_gid == null
        || req.query.content == null
        || req.query.type == null) {
        res.send({errno: -1, errmsg: 'parameter error'});
        return;
    }

    groupMsg.isGroupUser(req.query.from_uid, req.query.to_gid, req.query.group_type, 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;
        }

        var at_uid = '';
        if (req.query.at_uid != null) {
            at_uid = req.query.at_uid;
        }
        // 保存群组消息
        groupMsg.saveGroupMsg(req.query.from_uid, req.query.to_gid, at_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 group msg success'});

            // 统计信息
            StatMsg.updateGroupChatInfo(req.query.from_uid,
                req.query.to_gid,
                req.query.from_uid,
                0,
                req.query.type,
                req.query.content,
                false,
                function (err, result) {
                    if (err) {
                        console.log(err);
                    }
                });

            // 推送通知消息给群组各成员
            groupMsg.getGroupUsers(req.query.to_gid, req.query.group_type, function (err, result) {
                if (err) {
                    console.log('get users from db error');
                    return;
                }

                if (result.length == 0) {
                    console.log('no receive users');
                    return;
                }

                // 推送通知
                for (var nIndex = 0; nIndex < result.length; nIndex++) {
                    if (result[nIndex].member_code == req.query.from_uid) {
                        continue;
                    }

                    (function () {
                        var toUserID = result[nIndex].member_code;

                        user.getUserbyID(toUserID, function (err, result) {
                            var tmp = toUserID;
                            if (err) {
                                console.log('group msg:get users by id from db failed');
                                return;
                            }
                            var title = '';
                            var content = '';
                            if (req.query.type == 1) {
                                title = '群组消息';
                                content = req.query.content;
                            } else if (req.query.type == 2) {
                                title = '群组消息';
                                content = '接收到 [图片]';
                            } else if (req.query.type == 3) {
                                title = '群组消息';
                                content = '接收到 [语音]';
                            } else {
                                title = '群组消息';
                                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: 'group_msg',
                                gid: req.query.to_gid
                            });
                            // 保存通知到数据库中
                            push.savePushNotify(toUserID,
                                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(toUserID,
                                                    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);
                                                        }
                                                    });
                                            }
                                        }
                                    }
                                });
                        });

                        // 统计信息
                        var at_me = 0;
                        if (at_uid == toUserID) {
                            at_me = 1;
                        }
                        StatMsg.updateGroupChatInfo(toUserID,
                            req.query.to_gid,
                            req.query.from_uid,
                            at_me,
                            req.query.type,
                            req.query.content,
                            true,
                            function (err, result) {
                                if (err) {
                                    console.log(err);
                                }
                            });
                    })();
                }
            });
        });
    });
});

/**
 * 读取群组消息。
 *
 * :group/getmsg.im?uid=x&gid=xx&start=0&count=20
 *
 * 参数：
 * uid：用户id
 * gid：群组id
 * start；分页查询起始条目
 * count：查询条数
 * 备注：按时间倒序
 */
router.get(endpoints.Msg.Groups, function (req, res, next) {
    if (req.query.uid == null
        || req.query.gid == null
        || req.query.start == null
        || req.query.count == null) {
        res.send({errno: -1, errmsg: 'parameter error'});
        return;
    }

    groupMsg.getGroupMsg(req.query.gid, 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
        StatMsg.clearGroupChatInfo(req.query.uid,
            req.query.gid,
            function (err, result) {
                if (err) {
                    console.log(err);
                }
            });
    });
});


/**
 * 发送系统消息。
 *
 * system/sendmsg.im?to_uid=x&type=xx&title=xxx&content=xxxx&data=xxxxx
 *
 * 参数：
 * to_uid：消息接收者ID
 * type：消息类型
 * title：消息标题
 * content：推送消息提示内容
 * data：推送消息内容
 */
router.get(endpoints.Msg.System, function (req, res, next) {
    if (req.query.to_uid == null
        || req.query.title == null
        || req.query.type == null
        || req.query.content == null
        || req.query.data == null) {
        res.send({errno: -1, errmsg: 'parameter error'});
        return;
    }

    user.getUserbyID(req.query.to_uid, function (err, result) {
        if (err) {
            res.send({errno: 1, errmsg: 'get users by id from db failed'});
            return;
        }

        var bMustPush = 0;
        var data;
        if (result.length > 0) {
            data = result[0];
            if (data.is_online) {
                bMustPush = 1;
            }
        }

        var push_data = JSON.stringify({
            type: req.query.type,
            data: req.query.data
        });

        // 保存该条推送信息
        systemMsg.saveSystemMsg(req.query.to_uid,
            req.query.type,
            req.query.title,
            req.query.content,
            req.query.data,
            function (err, result) {
                if (err) {
                    // 保存失败
                    res.send({errno: 2, errmsg: 'save msg to db failed'});
                } else {
                    // 保存通知到数据库中
                    push.savePushNotify(req.query.to_uid,
                        req.query.type,
                        req.query.title,
                        req.query.content,
                        push_data,
                        bMustPush,
                        function (err, result) {
                            if (err) {
                                // 保存失败
                                res.send({errno: 3, errmsg: 'save msg to db failed'});
                            } else {
                                res.send({errno: 0, errmsg: 'save msg to db success'});
                                if (bMustPush == true) {
                                    if (data.platform == 0) {// iOS
                                        getui.pushAPN(req.query.to_uid,
                                            data.token,
                                            req.query.type,
                                            req.query.title,
                                            req.query.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,
                                            req.query.title,
                                            req.query.content,
                                            push_data,
                                            data.status,
                                            function (err, result) {
                                                if (err != null) {
                                                    console.log(err);
                                                } else {
                                                    console.log(result);
                                                }
                                            });
                                    }
                                }
                            }
                        });
                }
            });
    });
});

/**
 * 获取群组消息统计。
 *
 * statistic/getgroupchatinfo.im?uid=x&gid=xx
 *
 * 参数：
 * uid：信息所有者id
 * gid：群组id
 */
router.get(endpoints.Msg.GroupStat, function (req, res, next) {
    if (req.query.uid == null
        || req.query.gid == null) {
        res.send({errno: -1, errmsg: 'parameter error'});
        return;
    }

    StatMsg.getGroupChatInfo(req.query.uid, req.query.gid, function (err, result) {
        if (err) {
            res.send({errno: 1, errmsg: 'get statistic from db error'});
            return;
        }

        if (result.length == 0) {
            var data = {"uid":req.query.uid,"from_uid":"","from_gid":req.query.gid,"at_me":0,"last_content_type":1,"last_content":"","new_msg_count":0,"timestamp":0};
            res.send(data);
            return;
        }

        result[0].timestamp = Date.parse(new Date(result[0].timestamp));
        res.send(result[0]);
    });
});

/**
 * 获取点对点消息统计。
 *
 * statistic/getp2pchatinfo.im?uid=x&peer_uid=xx
 *
 * 参数：
 * uid：信息所有者id
 * peer_uid：聊天对端id
 */
router.get(endpoints.Msg.PrivateStat, function (req, res, next) {
    if (req.query.uid == null
        || req.query.peer_uid == null) {
        res.send({errno: -1, errmsg: 'parameter error'});
        return;
    }

    StatMsg.getP2PChatInfo(req.query.uid, req.query.peer_uid, function (err, result) {
        if (err) {
            res.send({errno: 1, errmsg: 'get statistic from db error'});
            return;
        }

        if (result.length == 0) {
            var data = {"uid":req.query.uid,"from_uid":req.query.peer_uid,"last_content_type":1,"last_content":"","new_msg_count":0,"timestamp":0};
            res.send(data);
            return;
        }

        result[0].timestamp = Date.parse(new Date(result[0].timestamp));
        res.send(result[0]);
    });
});

/**
 * 获取参与的聊天列表，包括：点对点，@我，参与的讨论组等。
 *
 * statistic/getchatlist.im?uid=x
 *
 * 参数：
 * uid：信息所有者id
 */
router.get(endpoints.Users.ChatList, function (req, res, next) {
    if (req.query.uid == null) {
        res.send({errno: -1, errmsg: 'parameter error'});
        return;
    }

    StatMsg.getChatList(req.query.uid, function (err, result) {
        if (err) {
            res.send({errno: 1, errmsg: 'get statistic from db error'});
            return;
        }

        if (result.length == 0) {
            var data = {"uid":req.query.uid,"from_uid":req.query.peer_uid,"last_content_type":1,"last_content":"","new_msg_count":0,"timestamp":0};
            res.send(data);
            return;
        }

        //result[0].timestamp = Date.parse(new Date(result[0].timestamp));
        for (var index = 0; index < result.length; index++) {
            result[index].timestamp = Date.parse(new Date(result[index].timestamp));
        }
        res.send(result);
    });
});

/**
 * 群组聊天消息所有未读数。
 *
 * statistic/getgroupunreadcount.im?uid=x
 *
 * 参数：
 * uid：信息所有者id
 */
router.get(endpoints.Users.GroupUnreadMsgCount, function (req, res, next) {
    if (req.query.uid == null) {
        res.send({errno: -1, errmsg: 'parameter error'});
        return;
    }

    StatMsg.getGroupChatAllUnRead(req.query.uid, function (err, result) {
        if (err) {
            res.send({errno: 1, errmsg: 'get statistic from db error'});
            return;
        }

        var data = {"uid":req.query.uid,"msg_type":2,"new_msg_count":0};
        if (result.length == 0) {
            res.send(data);
            return;
        }

        var count = 0;
        var index = 0;
        var length = result.length;
        for (; index < length; index++) {
            count += result[index].new_msg_count;
        }
        data.new_msg_count = count;
        res.send(data);
    });
});

/**
 * 一对一聊天消息所有未读数。
 *
 * statistic/getp2punreadcount.im?uid=x
 *
 * 参数：
 * uid：信息所有者id
 */
router.get(endpoints.Users.PrivateUnreadMsgCount, function (req, res, next) {
    if (req.query.uid == null) {
        res.send({errno: -1, errmsg: 'parameter error'});
        return;
    }

    StatMsg.getP2PChatAllUnRead(req.query.uid, function (err, result) {
        if (err) {
            res.send({errno: 1, errmsg: 'get statistic from db error'});
            return;
        }

        var data = {"uid":req.query.uid,"msg_type":1,"new_msg_count":0};
        if (result.length == 0) {
            res.send(data);
            return;
        }

        var count = 0;
        var index = 0;
        var length = result.length;
        for (; index < length; index++) {
            count += result[index].new_msg_count;
        }
        data.new_msg_count = count;
        res.send(data);
    });
});

/**
 * 所有聊天消息未读数。
 *
 * statistic/getallunreadmsgcount.im?uid=x
 *
 * 参数：
 * uid：信息所有者id
 */
router.get(endpoints.Users.UnreadMsgCount, function (req, res, next) {
    if (req.query.uid == null) {
        res.send({errno: -1, errmsg: 'parameter error'});
        return;
    }

    StatMsg.getChatAllUnRead(req.query.uid, function (err, result) {
        if (err) {
            res.send({errno: 1, errmsg: 'get statistic from db error'});
            return;
        }

        var data = {"uid":req.query.uid,"msg_type":0,"new_msg_count":0};
        if (result.length == 0) {
            res.send(data);
            return;
        }

        var count = 0;
        var index = 0;
        var length = result.length;
        for (; index < length; index++) {
            count += result[index].new_msg_count;
        }
        data.new_msg_count = count;
        res.send(data);
    });
});

/**
 * 获取角标数。
 *
 * statistic/getbadgenum.im?uid=x
 *
 * 参数：
 * uid：用户id
 */
router.get('/getbadgenum.im', function (req, res, next) {
    if (req.query.uid == null) {
        res.send({errno: -1, errmsg: 'parameter error'});
        return;
    }

    StatMsg.getBadgeNumber(req.query.uid, function (err, result) {
        if (err) {
            res.send({errno: 1, errmsg: 'get badge error'});
            return;
        }

        var data = {"uid":req.query.uid,"badge":result};
        res.send(data);
    });
});

module.exports = router;