var ObjectID = require('mongodb').ObjectID;
var db = require('../db');
var mongoose = require("mongoose");
var {callModel:Call} = require("../models/call");
var Star = require("../models/star");

var defaultNumResults = 50;


var channels = {};


function get_calls(query, numResults, res) {

    var calls = [];
    var fields = {
        _id: true,
        talkgroupNum: true,
        path: true,
        name: true,
        time: true,
        srcList: true,
        freq: true,
        star: true,
        len: true,
        url: true
    };

    db.get().collection('calls', function(err, transCollection) {
        transCollection.find(query.filter,  fields, function(err, cursor) {
          if (err) {
              console.warn("Error - get_calls() Could not find item " + err + " filter: " + query.filter);
              res.send(404, 'Sorry, we cannot find that!');
              return;
          }
            cursor.sort(query.sort_order).limit(numResults).each(function(err, item) {
                if (item) {
                    call = {
                        _id: item._id.toHexString(),
                        talkgroupNum: item.talkgroupNum,
                        url: item.url,
                        filename: item.path + item.name,
                        time: item.time,
                        srcList: item.srcList,
                        star: item.star,
                        freq: item.freq,
                        len: Math.round(item.len)
                    };
                    calls.push(call);
                } else {
                    res.contentType('json');
                    res.send(JSON.stringify({
                        calls: calls,
                        direction: query.direction
                    }));
                }
            });
        });
    });


}

function build_filter(filter_type, code, start_time, direction, shortName, numResults, starred, res) {
    var filter = {};
    var query = {};
    var FilterType = {
        All: 0,
        Talkgroup: 1,
        Group: 2,
        Unit: 3
    };
/* removed to see if it helps queries
    if (starred) {
        filter.star = {
            $gt: 0
        };
    }*/

    if (start_time) {
        var start = new Date(start_time);
        if (direction == 'newer') {
            filter.time = {
                $gt: start
            };
        } else {
            filter.time = {
                $lt: start
            };
        }

    }
    /*
    filter.len = {
        $gte: -1.0
    };*/


    var sort_order = {};
    if (direction == 'newer') {
        sort_order['time'] = 1;
    } else {
        sort_order['time'] = -1;
    }

    // make sure the shortName for the system is included in the query
    filter.shortName = shortName;

    query['direction'] = direction;
    query['sort_order'] = sort_order;

    if (filter_type) {
        if ((filter_type == "group") && code && (code.indexOf(',') == -1)) {
            db.get().collection("groups", function(err, groupCollection) {
              if (err || !groupCollection) {
                  console.warn("[" + shortName + "] Error - build_filter() Group Collection does not exist " + err);
                  res.contentType('json');
                  res.send(JSON.stringify( {
                      message: 'That Group ID doesnt exist.'
                  }));
                  return;
                }
                groupCollection.findOne({
                    'shortName': shortName,
                    '_id': ObjectID.createFromHexString(code)
                }, function(err, group) {
                    if (err) {
                        console.warn("[" + shortName + "] Error - build_filter() Group ID does not exist " + err);
                        res.contentType('json');
                        res.send(JSON.stringify( {
                            message: 'That Group ID doesnt exist.'
                        }));
                    } else if (!group) {
                      console.warn("[" + shortName + "] Error - build_filter() group is null " + err);
                      res.contentType('json');
                      res.send(JSON.stringify({
                          message: 'That Group ID doesnt exist.'
                      }));
                    }  else{
                        filter.talkgroupNum = {
                            $in: group.talkgroups
                        };
                        query['filter'] = filter;

                        get_calls(query, numResults, res);
                    }
                });
            });
        } else {
            if ((filter_type == "talkgroup") || (filter_type == "group")) {
                if (code) {
                    var codeArray = code.split(',').map(function(item) {
                        return parseInt(item, 10);
                    });
                    filter.talkgroupNum = {
                        $in: codeArray
                    };
                }
            }

            if (filter_type == "unit") {
                if (code) {
                    var codeArray = code.split(',').map(function(item) {
                        return parseInt(item, 10);
                    });
                    filter.srcListv = {
                        $in: codeArray
                    };
                }
            }
            query['filter'] = filter;

            get_calls(query, numResults, res);
        }
    } else {
        query['filter'] = filter;
        get_calls(query, numResults, res);
    }
}


exports.get_card = function(req, res) {
    var objectId = req.params.id;
    try {
        var o_id = ObjectID.createFromHexString(objectId);
    } catch (err) {
        console.warn("Error - /card/:id generating ObjectID " + err);
        res.status(500);
        res.send(JSON.stringify({
            error: err,
            "_id": objectId
        }));
        return;
    }
    db.get().collection('calls', function(err, transCollection) {
        transCollection.findOne({
                '_id': o_id
            },
            function(err, item) {
                //console.log(util.inspect(item));
                if (item) {
                    var time = new Date(item.time);
                    var timeString = time.toLocaleTimeString("en-US");
                    var dateString = time.toDateString();
                    res.render('card', {
                        item: item,
                        channel: channels[item.talkgroupNum],
                        time: timeString,
                        date: dateString
                    });
                } else {
                    console.warn("Error - /card/:id Could not find Item " + err);
                    res.send(404, 'Sorry, we cannot find that!');
                }
            });
    });
}

function package_call(item) {
    var time = new Date(item.time);
    var timeString = time.toLocaleTimeString("en-US");
    var dateString = time.toDateString();
    call = {
        _id: item._id.toHexString(),
        shortName: item.shortName,
        talkgroupNum: item.talkgroupNum,
        filename: item.path + item.name,
        url: item.url,
        time: item.time,
        timeString: timeString,
        dateString: dateString,
        path: item.path,
        name: item.name,
        freq: item.freq,
        srcList: item.srcList,
        freqList: item.freqList,
        star: item.star,
        len: Math.round(item.len)
    };
    return call;
}

exports.remove_star = function(req, res, next) {
    var objectId = req.params.id;
    try {
        var o_id = ObjectID.createFromHexString(objectId);
    } catch (err) {
        console.warn("[" + req.params.shortName + "] Error - /remove_star/:id generating ObjectID " + err);
        res.status(500);
        res.send(JSON.stringify({
            success: false,
            message: err,
            "_id": objectId
        }));
        return;
    }
    Call.findOneAndUpdate({ _id: objectId }, { $inc: { star: -1 } }, {new: true },function(err, item) {
        if (err) {
            res.status(500);
            res.send(JSON.stringify({
                success: false,
                message: err,
                "_id": objectId
            }));
       } else {
            var call = package_call(item);
            req.call = call;
            res.send(JSON.stringify({
                success: true,
                call: call
            }));
            next();      
       }
    })
}


exports.add_star = function(req, res, next) {
    var objectId = req.params.id;
    try {
        var o_id = ObjectID.createFromHexString(objectId);
    } catch (err) {
        console.warn("[" + req.params.shortName + "] Error - /add_star/:id generating ObjectID " + err);
        res.status(500);
        res.send(JSON.stringify({
            success: false,
            message: err,
            "_id": objectId
        }));
        return;
    }
    Call.findOneAndUpdate({ _id: objectId }, { $inc: { star: 1 } }, {new: true },function(err, item) {
        if (err) {
            res.status(500);
            res.send(JSON.stringify({
                success: false,
                message: err,
                "_id": objectId
            }));
       } else {
            var call = package_call(item);
            req.call = call;
            res.send(JSON.stringify({
                success: true,
                call: call
            }));
            next();      
       }
    })
}


exports.get_call = function(req, res) {
    var objectId = req.params.id;
    try {
        var o_id = ObjectID.createFromHexString(objectId);
    } catch (err) {
        console.warn("[" + req.params.shortName + "] Error - /:shortName/call/:id generating ObjectID " + err);
        res.status(500);
        res.send(JSON.stringify({
            success: false,
            error: err,
            "_id": objectId
        }));
        return;
    }
    db.get().collection('calls', function(err, transCollection) {
        transCollection.findOne({
                '_id': o_id
            },
            function(err, item) {
                if (item) {
                    var call = package_call(item);
                    res.contentType('json');
                    res.send(JSON.stringify({
                        success: true,
                        call: call})
                    );

                } else {
                    console.warn("[" + req.params.shortName + "] Error - /:shortName/call/:id Could not find item " + err + " ID: " + objectId);
                    res.status(404);
                    res.send(JSON.stringify({
                        success: false,
                        error: err,
                        "_id": objectId
                    }));
                }
            });
    });
}


exports.get_latest_calls = function(req, res) {
    var filter_code = req.query["filter-code"];
    var filter_type = req.query["filter-type"];
    var starred = req.query["filter-starred"] === 'true'?true:false;
    var short_name = req.params.shortName.toLowerCase();
    //console.log("[" + short_name + "] Latest -  Call Get Filter code: " + filter_code + " Filter Type: " + filter_type );

    build_filter(filter_type, filter_code, null, 'older', short_name, 1, starred, res);
}


exports.get_next_calls = function(req, res) {
    var filter_code = req.query["filter-code"];
    var filter_type = req.query["filter-type"];
    var starred = req.query["filter-starred"] === 'true'?true:false;
    var start_time = parseInt(req.query["time"]);
    var short_name = req.params.shortName.toLowerCase();
    //console.log("[" + short_name + "] Next Calls - time: " + start_time + " Filter code: " + filter_code + " Filter Type: " + filter_type);

    build_filter(filter_type, filter_code, start_time, 'newer', short_name, 1, starred, res);
}

exports.get_newer_calls = function(req, res) {
    var filter_code = req.query["filter-code"];
    var filter_type = req.query["filter-type"];
    var starred = req.query["filter-starred"] === 'true'?true:false;
    var start_time = parseInt(req.query["time"]);
    var short_name = req.params.shortName.toLowerCase();
    //console.log("[" + short_name + "] Newer Calls - time: " + start_time + " Filter code: " + filter_code + " Filter Type: " + filter_type );

    build_filter(filter_type, filter_code, start_time, 'newer', short_name, defaultNumResults, starred, res);
}

exports.get_older_calls = function(req, res) {
    var filter_code = req.query["filter-code"];
    var filter_type = req.query["filter-type"];
    var starred = req.query["filter-starred"] === 'true'?true:false;
    var start_time = parseInt(req.query["time"]);
    var short_name = req.params.shortName.toLowerCase();
    //console.log("[" + short_name + "] Older Calls - time: " + start_time + " Filter code: " + filter_code + " Filter Type: " + filter_type);

    build_filter(filter_type, filter_code, start_time, 'older', short_name, defaultNumResults, starred, res);
}


//Delete this after I fix the iPhone app
exports.get_iphone_calls = function(req, res) {
    var filter_code = req.query["filter-code"];
    var filter_type = req.query["filter-type"];
    var starred = req.query["filter-starred"] === 'true'?true:false;
    var start_time = parseInt(req.params.time);
    var short_name = req.params.shortName.toLowerCase();
    //console.log("[" + short_name + "] iPhone Newer Calls - time: " + start_time + " Filter code: " + filter_code + " Filter Type: " + filter_type);

    build_filter(filter_type, filter_code, start_time, 'older', short_name, defaultNumResults, starred, res);
}

exports.get_calls = function(req, res) {
    var filter_code = req.query["filter-code"];
    var filter_type = req.query["filter-type"];
    var starred = req.query["filter-starred"] === 'true'?true:false;
    var short_name = req.params.shortName.toLowerCase();
    //console.log("[" + short_name + "] Inital Calls -  Call Get Filter code: " + filter_code + " Filter Type: " + filter_type);

    build_filter(filter_type, filter_code, null, 'older', short_name, defaultNumResults, starred, res);
}