if (!String.prototype.includes) {
    String.prototype.includes = function () {
        'use strict';
        return String.prototype.indexOf.apply(this, arguments) !== -1;
    };
}
//extend FileReader
if (!FileReader.prototype.readAsBinaryString) {
    FileReader.prototype.readAsBinaryString = function (fileData) {
        var binary = "";
        var pt = this;
        var reader = new FileReader();
        reader.onload = function (e) {
            var bytes = new Uint8Array(reader.result);
            var length = bytes.byteLength;
            for (var i = 0; i < length; i++) {
                binary += String.fromCharCode(bytes[i]);
            }
            //pt.result  - readonly so assign binary
            pt.content = binary;
            $(pt).trigger('onload');
        }
        reader.readAsArrayBuffer(file);
    }
}

var options = {
    timepicker: {
        twelveHour: false,
    }
};

document.addEventListener('DOMContentLoaded', function() {
    M.AutoInit();
    var elems = document.querySelectorAll('.timepicker');
    var timepickers = M.Timepicker.init(elems, options.timepicker);
});
//localStorage persistence

var SHIFT_STORAGE_KEY = "dienstplan_chrosey";
var RULE_STORAGE_KEY = "regeln_chrosey";
var shiftStorage = {
    fetch: function () {
        'use strict';
        var parsed = JSON.parse(localStorage.getItem(SHIFT_STORAGE_KEY) || '[]'),
            shifts = [];
        parsed.forEach(function (el, index) {
            var shift = Shift.thaw(el);
            shift.id = index;
            shifts.push(shift);
        });
        shiftStorage.uid = shifts.length;
        return shifts;
    },
    save: function (shifts) {
        'use strict';
        var json = JSON.stringify(shifts)
        localStorage.setItem(SHIFT_STORAGE_KEY, json);
    },
    count: function () {
        return JSON.parse(localStorage.getItem(SHIFT_STORAGE_KEY) || '[]').length;
    }
};
var ruleStorage = {
    fetch: function () {
        'use strict';
        var parsed = JSON.parse(localStorage.getItem(RULE_STORAGE_KEY)) | [];
        var rules = parsed.length > 0 
            ? parsed.map((e,i) => { 
                var r = Rule.thaw(e); 
                r.id = i; 
                return r; 
            })
            : Rule.defaults();
        ruleStorage.uid = rules.length;
        return rules;
    },
    save: function (rules) {
        'use strict';
        var json = JSON.stringify(rules);
        localStorage.setItem(RULE_STORAGE_KEY, json);
    }
};

Vue.component('chip-input', {
    template: `
        <div class="chips no-autoinit" :id="name"></div>
    `,
    data() {
        return {
            instance: null,
            chips: []
        }
    },

    computed: {
        chipsData() {
            return this.instance.chipsData;
        }
    },

    watch:{
        initData:{
            deep: true,
            handler(n,o) {
                if (n !== o) {
                    this.initialize();
                    this.$emit('init');
                }
            }
        }
    },
    props: {
        name: String,
        initData: Array
    },

    methods: {
        initialize() {
            this.chips = this.initData.map(e => e);
            var el = $('#'+this.name)[0];
            this.instance = M.Chips.init(el, {
                data: this.chips,
                onChipAdd: () => {
                    this.$emit("change",this.chipsData);
                },
                onChipDelete: () => {
                    this.$emit("change",this.chipsData);
                }
            });
        }
    },

    mounted() {
        this.initialize();
    }
});

var app = new Vue({
    el: '#app',
    data: {
        shifts: shiftStorage.fetch(),
        rules: ruleStorage.fetch(),
        icsFile: null,
        blob: null,
        dp_sheet: '',
        deletedShift: '',
        remaining: shiftStorage.count(),
        selectedShift: new Shift({}),
        selectedShiftIndex: -1,
        selectedRule: new Rule({}),
        selectedRuleIndex: -1,
        saveto: 'dienstplan.ics',
        uploadFileName: "",
        config: {
            moment: {
                parse_formats: [
                    "ddd, DD/ MMM. 'YY HH:mm",
                    "ddd, DD/ MMM. YYYY HH:mm"
                ],
                parse_language: 'en',
                display_language: 'de'
            },
            toast_length: 3000
        },
    },
    watch: {
        shifts: {
            handler: function (shifts) {
                'use strict';
                shiftStorage.save(shifts);
                this.remaining = shifts.length;
                this.makeToast("Änderungen gespeichert.");
            },
            deep: true
        },
        rules: {
            handler: function (rules) {
                'use strict';
                ruleStorage.save(rules);
                this.makeToast("Änderungen gespeichert.");
            },
            deep: true
        }
    },
    methods: {
        updateArten(value){
            this.selectedRule.Arten = value;
        },
        updateTitel(value){
            this.selectedRule.Titel = value;
        },

        makeToast(message) {
            M.toast({
                html: message,
                displayLength: this.config.toast_length
            });
        },

        onFileChange: function (event) {
            var files = event.target.files || event.dataTransfer.files;
            this.handleInputFile(files[0]);
            this.uploadFileName = files[0].name + " [" + Math.round(files[0].size / 1024) + " kB]";
            this.makeToast(this.uploadFileName + " ausgewählt");
        },

        handleInputFile: function (file) {
            var reader = new FileReader();
            var vm = this;
            reader.onload = (e) => {
                var data = !e ? reader.content : e.target.result;
                var workbook = XLSX.read(data, {
                    type: 'binary',
                    cellDates: true,
                });
                var isErfurterDienstplan = workbook.SheetNames.indexOf("Dienstplan") > -1;
                
                if(isErfurterDienstplan){
                    vm.parseForErfurt(workbook.Sheets["Dienstplan"]);
                } else {
                    var sheetName = workbook.SheetNames[0];
                    vm.parseForStuttgart(workbook.Sheets[sheetName]);
                }
            };
            reader.readAsBinaryString(file);
        },

        parseForErfurt: function (dp) {
            var arr = XLSX.utils.sheet_to_row_object_array(dp, {
                    range: 1
                });
            var vm = this;
            var day;
            
            this.makeToast("Erfurter Dienstplan erkannt.");

            arr.forEach(element => {
                moment.locale(vm.config.moment.parse_language);
                if (element.hasOwnProperty('Datum')) {
                    day = moment(element.Datum);
                }
                if (element.hasOwnProperty('Dienst')) {
                    var time = element.Zeit ? moment(element.Zeit) : day;
                    var termin = {
                        datum: day.clone().hour(time.hour()).minute(time.minute()),
                        art: element.Dienst ? element.Dienst.trim() : "",
                        beschreibung: element.Bemerkung ? element.Bemerkung.trim(): "",
                        name: element.__EMPTY ? element.__EMPTY.trim() : ""
                    }
                    vm.addShift(new Shift(termin));
                }
            });
        },

        parseForStuttgart: function (dp) {
            var arr = XLSX.utils.sheet_to_json(dp, {
                    header: "A",
                    blankrows: false,
                });
            var vm = this;
            var day;

            this.makeToast("Stuttgarter Dienstplan erkannt.");

            arr.forEach(element => {
                moment.locale(vm.config.moment.parse_language);
                if (element.hasOwnProperty('C')) {
                    day = moment(element.C);
                }
                if (element.hasOwnProperty('D') && moment(element.D, "HH:mm").isValid()) {
                    var termin = {
                        ort: element.H ? element.H.trim() : "",
                        art: element.E ? element.E.trim() : "",
                        beschreibung: element.H ? element.H.trim(): "",
                        name: element.F ? element.F.trim() : ""
                    }
                    var time = day.clone();
                    if (typeof(element.D) === "object") {
                        time = moment(element.D);
                        termin.datum = day.clone().hour(time.hour()).minute(time.minute());
                    } else if(element.D.indexOf("-") > -1 ) {
                        var tArray = element.D.split(" - ");
                        time = moment(tArray[0],"HH:mm");
                        termin.datum = day.clone().hour(time.hour()).minute(time.minute());
                        termin.ende = moment(tArray[1], "HH:mm").format("HH:mm");
                    }
                    vm.addShift(new Shift(termin));
                    
                }
            });
        },

        addShift: function (shift) {
            this.shifts.push(shift);
        },

        removeShift: function (shift) {
            this.shifts.splice(this.shifts.indexOf(shift), 1);
            this.makeToast(shift.VEventTitle + " gelöscht");
        },

        cleanStorage: function () {
            this.shifts = [];
            this.makeToast("Alle Einträge gelöscht");
        },

        createDownloadFile: function () {
            var vCal = new VCalendar("Dienstplan Kalender");
            this.shifts.forEach(function (shift) {
                vCal.add(shift.toVEvent());
            });
            var calString = vCal.toString();
            this.blob = new Blob([calString], {
                type: 'text/plain'
            });

            if (this.icsFile !== null) {
                window.URL.revokeObjectURL(this.icsFile);
            }

            this.icsFile = window.URL.createObjectURL(this.blob);
            this.makeToast(this.saveto + " erstellt.");
        },

        downloadFile: function () {
            if (window.navigator.msSaveOrOpenBlob) {
                window.navigator.msSaveOrOpenBlob(this.blob, this.saveto);
            }
        },

        selectShift: function (shift) {
            this.selectedShift = Shift.thaw(shift);
            this.keepShift = shift;
            M.updateTextFields();
            $('#shiftModal').modal('open');
        },

        saveChanges: function (changedShift) {
            this.shifts.splice(this.shifts.indexOf(this.keepShift), 1, changedShift);

            $('#shiftModal').modal('close');
            this.keepShift = '';
            this.selectedShift = '';
        },

        discardChanges: function (changedShift) {
            $('#shiftModal').modal('close');
            this.keepShift = '';
            this.selectedShift = '';
        },

        editRule: function (rule) {
            this.selectedRule = Rule.thaw(rule);
            this.selectedRuleIndex = this.rules.indexOf(rule);
            $('#ruleModal').modal('open');
        },

        saveRule: function () {
            this.rules[this.selectedRuleIndex] = this.selectedRule;

            $('#ruleModal').modal('close');
            this.selectedRule = new Rule();
        },

        discardRule: function () {
            $('#ruleModal').modal('close');
            
            this.selectedRule = new Rule();
        }

    },
    directives: {
        'edit-focus': function (el, value) {
            if (value) {
                el.focus();
            }
        }
    }
})