;(function () {
    'use strict';

    angular
        .module('service.moodService', [])
        .service('moodService', moodService);

    moodService.$inject = ['http', 'url', '$window', 'dateFactory', 'calendarSvc'];

    function moodService(http, url, $window, dateFactory, calendarSvc) {
        var model = {};
        model.getMyMoodByDate = getMyMoodByDate;
        model.getMyMoodByYear = getMyMoodByYear;
        model.separateMoodPerMonth = separateMoodPerMonth;
        model.getCurrentMonth = getCurrentMonth;
        model.getCurrentYear = getCurrentYear;
        model.configureChart = configureChart;
        model.generateYearsArr = generateYearsArr;
        model.currentWeek = currentWeek;
        var EMPTY_VALUE = 1;
        var MEDIUM_VALUE = 25;
        var MIN_TWO_VALUE = 20;
        var MAX_TWO_VALUE = 30;
        var UPPER_TWO_SMILE = 4;
        var BOTTOM_TWO_SMILE = 3;
        var empty = true;


        model.weekList = [
            {
                label: 'Week 1', number: 1
            },
            {
                label: 'Week 2', number: 2
            },
            {
                label: 'Week 3', number: 3
            },
            {
                label: 'Week 4', number: 4
            },
            {
                label: 'Week 5', number: 5
            },
            {
                label: 'Week 6', number: 6
            }
        ];

        model.monthLabels = calendarSvc.getMonths();

        model.dayLabels = ["Mon", "Tue", "Wed", "Thu", "Fri", "Sat", "Sun"
        ];

        model.smileLabels = [
            '&nbsp',
            '&nbsp',
            '<img src="content/images/moods-new/01_bad.svg" style="left:0"/>',
            '<img src="content/images/moods-new/02_somewhat_bad.svg" style="left:0"/>',
            '<img src="content/images/moods-new/03_ok.svg" style="left:0"/>',
            '<img src="content/images/moods-new/04_good.svg" style="left:0"/>',
            '<img src="content/images/moods-new/05_great.svg" style="left:0"/>'
        ];
        model.smileLabels2 = [
            '',
            '',
            '<img src="content/images/moods-new/01_bad.svg" style="left:0"/>',
            '',
            '<img src="content/images/moods-new/05_great.svg" style="left:0"/>'
        ];

        return model;

        /**
         * Get moods array and transform for our format
         * @param credentials
         * @returns {Promise.<TResult>|*}
         */
        function getMyMoodByDate(credentials) {
            return http.get(url.mood.getMyMoodByDate, credentials)
                .then(function (res) {
                    if (res.moods !== undefined) {
                        res.moods.forEach(function (el) {
                            var tmpDate = dateFactory.created_date(el.created_at * 1000);
                            el.created_time_row = tmpDate.moodTime;
                            el.created_month_row = tmpDate.moodMonth;
                            el.created_week_row = tmpDate.weekDay;
                            el.created_year_row = tmpDate.moodYear;
                        });
                    }
                    return res;
                });
        }

        function getMyMoodByYear(credentials) {
            return http.get(url.mood.getMyMoodByYear, credentials);
        }

        /**
         * separate moods array per month for chart.
         * @param arr
         * @returns {Array}
         */
        function separateMoodPerMonth(arr) {
            var result = [];
            var arrayMood = arr || [];
            arrayMood.forEach(function (el) {
                var date = new Date(el.created_at * 1000);
                var month = date.getMonth() + 1;
                var existMonthIndex = _getIndexByMonth(result, month);
                if (typeof existMonthIndex !== 'undefined') {
                    result[existMonthIndex].values.push(el.level);
                } else {
                    var tmpObj = {
                        month: month,
                        values: [el.level],
                    };
                    result.push(tmpObj);
                }
            });
            return _getAverage(result);
        }

        function _getIndexByMonth(arr, month) {
            var indexRes = undefined;
            arr.forEach(function (el, index) {
                if (el.month === month) {
                    indexRes = index;
                }
            });
            return indexRes;
        }

        /**
         * get average value from arr
         * @param arr
         * @returns {Array}
         * @private
         */
        function _getAverage(arr) {
            var result = [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1];
            arr.forEach(function (element) {
                var tmpArr = [];
                element.values.forEach(function (el) {
                    if (el === MIN_TWO_VALUE) {
                        el = 2;
                        tmpArr.push(el);
                    }
                    if (el === MAX_TWO_VALUE) {
                        el = 6;
                        tmpArr.push(el);
                    } else {
                        tmpArr.push(el);
                    }
                });
                element.average = tmpArr.sum() / tmpArr.length;
                element.month--;
                result[element.month] = element.average;
            });
            return result;
        }

        function currentWeek() {
            var currentDate = new Date();
            var first = (currentDate.getDate() - currentDate.getDay()) / 7;
            return Math.ceil(first);
        }

        /**
         *
         * @returns {number}
         */
        function getCurrentMonth() {
            var date = new Date();
            return date.getMonth();
        }

        /**
         *
         * @returns {number}
         */
        function getCurrentYear() {
            var date = new Date();
            return date.getFullYear();
        }


        function configureChart(week, moods, type, twoSmiles, data) {
            var chartData = [];
            var labels = [];
            if (typeof moods.group_by_week === 'undefined') {
                moods.group_by_week = [];
                if (moods.group_by_week === false) {
                    empty = true;
                } else {
                    empty = false;
                }
            }
            if (type === 'weekly') {
                var weekData = typeof moods.group_by_week[week] !== 'undefined' ? moods.group_by_week[week] : [];
                chartData = _transformMoodsPerWeek(weekData, twoSmiles);
                labels = model.dayLabels;
            } else {
                var arrData = _prepareMoodData(data, twoSmiles);
                chartData = arrData;
                labels = model.monthLabels;
            }
            // var width = $window.innerWidth * 0.7;
            var height = $window.innerHeight * 0.5;
            var chartObj = {
                credits: false,
                exporting: {
                    enabled: false
                },
                chart: {
                    type: 'line',
                    height: height
                },
                plotOptions: {
                    series: {
                        color: '#26BB9C'
                    }
                },
                title: {
                    text: ''
                },
                series: [{
                    data: chartData,
                    id: 'series1'
                }],
                xAxis: {
                    categories: labels
                },
                yAxis: {
                    min: EMPTY_VALUE,
                    tickInterval: 1,
                    title: {
                        text: ''
                    },
                    max: twoSmiles ? 5 : 6,
                    labels: {
                        style: {
                            padding: '0 5px 5px 0',
                            position: 'absolute',
                            left: '10px',
                            top: '-24px',
                        },
                        step: 1,
                        useHTML: true,
                        formatter: function () {
                            if (twoSmiles) {
                                return model.smileLabels2[this.value];
                            } else {
                                return model.smileLabels[this.value];
                            }

                        }
                    }
                },
                legend: {
                    enabled: false
                },
                /* tooltip:{
                 formatter: function() {
                 // fixme if 6 smiles = true
                 if (twoSmiles) {
                 if (this.y > 3) {
                 return "Yes";
                 } else {
                 return "No";
                 }

                 }else{
                 return this;
                 }
                 }
                 },*/
                navigation: {
                    buttonOptions: {
                        enabled: false
                    }
                }
            };
            if (twoSmiles) {
                chartObj.tooltip = {
                    formatter: function () {
                        if (this.y > BOTTOM_TWO_SMILE) {
                            return "Yes";
                        } else if (this.y < BOTTOM_TWO_SMILE+1 && this.y > EMPTY_VALUE) {
                            return "No";
                        } else {
                            return 'unanswered';
                        }
                    }
                };
            }
            return chartObj;
        }

        function _prepareMoodData(data, twoSmiles) {
            if (data && data.length) {
                var arr = data.map(function (val) {
                    var temp = +val;
                    if (twoSmiles) {
                        if (temp >= MEDIUM_VALUE) {
                            return UPPER_TWO_SMILE;
                        } else if (temp < MEDIUM_VALUE && temp > EMPTY_VALUE) {
                            return BOTTOM_TWO_SMILE;
                        } else {
                            return EMPTY_VALUE;
                        }
                    } else if(temp === 0) {
                        return EMPTY_VALUE;
                    }
                    return temp;
                });
                return arr;
            }
        }

        /**
         * dynamically generate year list
         * @returns {Array}
         */
        function generateYearsArr() {
            var result = [];
            var currentYear = getCurrentYear();
            for (var i = currentYear; i > currentYear - 2; i--) {
                result.push(i);
            }
            return result;
        }

        /**
         * Sort moods arr per day
         * @param moodsArr
         * @returns {[number,number,number,number,number,number,number]}
         * @private
         */
        function _transformMoodsPerWeek(moodsArr, twoSmiles) {
            // var result = [0, 0, 0, 0, 0, 0, 0];
            var result = [1, 1, 1, 1, 1, 1, 1 ];
            if (twoSmiles) {
                moodsArr.forEach(function (el) {
                    var date = new Date(el.created_at * 1000);
                    var dayOfWeek = date.getDay();
                    if (dayOfWeek === 0) {
                        dayOfWeek = 7; //Sunday is 0;
                    }
                    if (el.level > 10) {
                        if (el.level === MAX_TWO_VALUE) {
                            result[dayOfWeek - 1] = UPPER_TWO_SMILE;
                        } else {
                            result[dayOfWeek - 1] = BOTTOM_TWO_SMILE;
                        }
                    } else {
                        result[dayOfWeek - 1] = EMPTY_VALUE;
                    }

                });
                return result;
            } else {
                moodsArr.forEach(function (el) {
                    var date = new Date(el.created_at * 1000);
                    var dayOfWeek = date.getDay();
                    if (dayOfWeek === 0) {
                        dayOfWeek = 7; //Sunday is 0;
                    }
                    if (el.level < 10 && el.level > EMPTY_VALUE) {
                        result[dayOfWeek - 1] = el.level;
                    } else {
                        result[dayOfWeek - 1] = EMPTY_VALUE;
                    }
                });
                return result;
            }
        }
    }
})();