let game = new Vue({
    el: '#root',
    data: {
        money: 0,
        loaded: false,
        resources: {
            wood: 50,
            stone: 0,
            iron: 0,
            bricks: 0,
            corn: 0,
            coal: 0,
            planks: 0
        },
        buildings: [
            {
                name: 'Bank',
                resource: 'gold',
                icon: 'medieval_largeCastle',
                level: 1,
                maxLevel: 20,
                isOwned: true,
                isUpgradeable: true,
                amount: 100,
                amountMultiplicator: 1.5,
                intervalInSeconds: 30,
                intervalMultiplicator: 1,
                price: 1000,
                priceMultiplicator: 10,
            },
            {
                name: 'Lumberjack',
                resource: 'wood',
                icon: 'medieval_lumber',
                level: 0,
                maxLevel: 15,
                isOwned: false,
                isUpgradeable: true,
                amount: 2,
                amountMultiplicator: 1,
                intervalInSeconds: 10,
                intervalMultiplicator: 0.95,
                price: 100,
                priceMultiplicator: 2
            },
            {
                name: 'Carpenter',
                resource: 'planks',
                icon: 'medieval_lumber',
                level: 0,
                maxLevel: 15,
                isOwned: false,
                isUpgradeable: true,
                amount: 5,
                amountMultiplicator: 1,
                intervalInSeconds: 25,
                intervalMultiplicator: 0.80,
                price: 15000,
                priceMultiplicator: 2,
                hasRequirements: true,
                requires: {
                    wood: 2
                }
            },
            {
                name: 'Quarry',
                resource: 'stone',
                icon: 'medieval_mine',
                level: 0,
                maxLevel: 15,
                isOwned: false,
                isUpgradeable: true,
                amount: 2,
                amountMultiplicator: 1,
                intervalInSeconds: 20,
                intervalMultiplicator: 0.95,
                price: 250,
                priceMultiplicator: 2
            },
            {
                name: 'Coal Mine',
                resource: 'coal',
                icon: 'medieval_mine',
                level: 0,
                maxLevel: 15,
                isOwned: false,
                isUpgradeable: true,
                amount: 2,
                amountMultiplicator: 1,
                intervalInSeconds: 20,
                intervalMultiplicator: 0.95,
                price: 600,
                priceMultiplicator: 2
            },
            {
                name: 'Blacksmith',
                resource: 'iron',
                icon: 'medieval_blacksmith',
                level: 0,
                maxLevel: 15,
                isOwned: false,
                isUpgradeable: true,
                amount: 2,
                amountMultiplicator: 3,
                intervalInSeconds: 20,
                intervalMultiplicator: 0.95,
                price: 1000,
                priceMultiplicator: 2.5,
                hasRequirements: true,
                requires: {
                    stone: 2,
                    coal: 1
                }
            },
            {
                name: 'Farm',
                resource: 'corn',
                icon: 'medieval_farm',
                level: 0,
                maxLevel: 25,
                isOwned: false,
                isUpgradeable: true,
                amount: 5,
                amountMultiplicator: 2,
                price: 500,
                priceMultiplicator: 2,
                intervalInSeconds: 60,
                intervalMultiplicator: 1
            },
        ],
        currentQuest: null,
        loadedIntervals: []
    },
    created() {
        this.checkBuildings();

        this.money = this.getSavedMoney();
        this.saveMoney();
        this.loadResources();

        this.loadBuildings();
        this.reloadBuildings();
        this.loaded = true;
    },
    methods: {
        checkBuildings() {
            let savedBuildings = JSON.parse(localStorage.getItem('buildings'));

            if (savedBuildings.length !== this.buildings.length) {
                localStorage.setItem('buildings', JSON.stringify(this.buildings));
                alert('Buildings have been resetted due to an important update.')
            }
        },

        saveMoney() {
            localStorage.setItem('money', String(this.money));
            return this.getSavedMoney();
        },

        getSavedMoney() {
            this.money = Number(localStorage.getItem('money') ?? 0);
            return this.money;
        },

        add(amount = 0, resource = 'gold') {
            switch (resource) {
                case 'wood':
                    this.resources.wood += amount;
                    break;
                case 'stone':
                    this.resources.stone += amount;
                    break;
                case 'bricks':
                    this.resources.bricks += amount;
                    break;
                case 'corn':
                    this.resources.corn += amount;
                    break;
                case 'coal':
                    this.resources.coal += amount;
                    break;
                case 'planks':
                    this.resources.planks += amount;
                    break;
                case 'gold':
                    this.money += amount;
                    break;
            }

            this.saveResources();
            return this.saveMoney();
        },

        sub(amount = 0, resource = false) {
            this.money -= amount;
            return this.saveMoney();
        },

        getAmount() {
            return this.money.toFixed(0);
        },

        getAmountFormatted() {
            return Intl.NumberFormat('de-DE', {style: 'currency', currency: 'EUR'}).format(this.money);
        },

        reloadBuildings() {
            let game = this;
            this.buildings.forEach((building) => {
                if (building.isOwned) {
                    game.initiateIntervals(building);
                }
            });
        },

        initiateIntervals(building) {
            building.intervalEarnID = setInterval(() => {
                if (building.requires) {
                    if (
                        building.requires.wood > game.resources.wood ||
                        building.requires.stone > game.resources.stone ||
                        building.requires.iron > game.resources.iron ||
                        building.requires.bricks > game.resources.bricks ||
                        building.requires.coal > game.resources.coal ||
                        building.requires.corn > game.resources.corn
                    ) {
                        building.hasMissingResources = true;
                        clearInterval(building.intervalLoadingID);
                    } else {
                        building.hasMissingResources = false;
                        game.useRequiredResources(building);
                        game.add(building.amount, building.resource);
                        game.reloadSingleBuilding(building);
                    }
                } else {
                    game.add(building.amount, building.resource);
                }
            }, building.intervalInSeconds * 1000);

            building.intervalLoadingID = setInterval(() => {
                if (building.loader < 100) {
                    building.loader += 10;
                } else {
                    building.loader = 10;
                }

                game.$forceUpdate()
            }, building.intervalInSeconds / 10 * 1000)


            this.loadedIntervals.push(building.intervalEarnID, building.intervalLoadingID);
        },

        buyBuilding(building) {
            if (this.money >= building.price) {
                this.sub(building.price);
                building.isOwned = true;

                this.upgradeBuilding(building, true);
                this.saveBuildings();
            } else {
                alert('Not enough money');
            }
        },

        buyUpgrade(building) {
            if (building.level === 'MAX') {
                alert('Already at MAX-Level');
                return false;
            }

            if (this.money >= building.price) {
                this.sub(building.price);
                this.upgradeBuilding(building);
            } else {
                alert('Not enough money');
            }
        },

        upgradeBuilding(building, first = false) {
            if (building.level < (building.maxLevel - 1)) {
                building.level++;
            } else {
                building.level = 'MAX';
                building.isUpgradeable = false;
            }

            building.price = Number(
                building.price * building.priceMultiplicator
            ).toFixed(2);

            if (first === false) {
                building.amount = building.amount * building.amountMultiplicator;
                building.intervalInSeconds = Number(building.intervalInSeconds * building.intervalMultiplicator).toFixed(2);
            }

            this.reloadSingleBuilding(building);
            this.saveBuildings();
        },

        reloadSingleBuilding(building) {
            clearInterval(building.intervalEarnID);
            clearInterval(building.intervalLoadingID);
            building.loader = 10;

            this.initiateIntervals(building);
        },

        saveBuildings() {
            localStorage.setItem('buildings', JSON.stringify(this.buildings));
        },

        loadBuildings: function () {
            let savedBuildings = JSON.parse(localStorage.getItem('buildings'));

            if (savedBuildings) {
                this.buildings = savedBuildings;
            }
        },

        saveResources() {
            localStorage.setItem('resources', JSON.stringify(this.resources));
        },

        loadResources: function () {
            let savedResources = JSON.parse(localStorage.getItem('resources'));

            if (savedResources) {
                this.resources = savedResources;
            }
        },

        generateQuest() {
            let possibleAmountsForQuest = [
                0, 0, 0, 5, 10, 15, 20, 25, 30, 35
            ];

            let randomWood = 0;
            let randomStone = 0;
            let randomIron = 0;
            let randomBricks = 0;
            let randomCorn = 0;
            let randomCoal = 0;
            let randomPlanks = 0;

            let rewardSum = 0;


            if (this.resources.wood > 0) {
                randomWood = this.getRandomElement(possibleAmountsForQuest);
                rewardSum += (randomWood * 5);
            }

            if (this.resources.stone > 0) {
                randomStone = this.getRandomElement(possibleAmountsForQuest);
                rewardSum += (randomStone * 7);
            }

            if (this.resources.iron > 0) {
                randomIron = this.getRandomElement(possibleAmountsForQuest);
                rewardSum += (randomIron * 200);
            }

            if (this.resources.bricks > 0) {
                randomBricks = this.getRandomElement(possibleAmountsForQuest);
                rewardSum += (randomBricks * 25);
            }

            if (this.resources.corn > 0) {
                randomCorn = this.getRandomElement(possibleAmountsForQuest);
                rewardSum += (randomCorn * 30);
            }

            if (this.resources.coal > 0) {
                randomCoal = this.getRandomElement(possibleAmountsForQuest);
                rewardSum += (randomCoal * 10);
            }

            if (this.resources.planks > 0) {
                randomPlanks = this.getRandomElement(possibleAmountsForQuest);
                rewardSum += (randomPlanks * 5);
            }

            if (rewardSum > 0) {
                this.currentQuest = {
                    wood: randomWood,
                    stone: randomStone,
                    iron: randomIron,
                    bricks: randomBricks,
                    corn: randomCorn,
                    coal: randomCoal,
                    planks: randomPlanks,
                    reward: rewardSum
                };
            } else {
                this.currentQuest = null;
            }

            return this.currentQuest;
        },

        getRandomElement(possibleValues) {
            return possibleValues[Math.floor(Math.random() * possibleValues.length)];
        },

        isQuestRedeemable() {
            return (
                this.resources.wood >= this.currentQuest.wood &&
                this.resources.stone >= this.currentQuest.stone &&
                this.resources.iron >= this.currentQuest.iron &&
                this.resources.bricks >= this.currentQuest.bricks &&
                this.resources.corn >= this.currentQuest.corn &&
                this.resources.coal >= this.currentQuest.coal
            );
        },

        redeemReward() {
            if (this.isQuestRedeemable()) {
                this.money += this.currentQuest.reward;
                this.resources.wood -= this.currentQuest.wood;
                this.resources.stone -= this.currentQuest.stone;
                this.resources.iron -= this.currentQuest.iron;
                this.resources.bricks -= this.currentQuest.bricks;
                this.resources.corn -= this.currentQuest.corn;
                this.resources.coal -= this.currentQuest.coal;

                this.generateQuest();
            } else {
                return false;
            }
        },

        useRequiredResources(building) {
            this.resources.wood -= building.requires.wood;
            this.resources.stone -= building.requires.stone;
            this.resources.iron -= building.requires.iron;
            this.resources.bricks -= building.requires.bricks;
            this.resources.corn -= building.requires.corn;
            this.resources.coal -= building.requires.coal;
        },

        getResourceIconForBuilding(building) {
            return this.getResourceIcon(building.resource);
        },

        getResourceIcon(resource) {
            return '<img class="resource-icon" src="img/' + resource + '.png" title="' + resource + '" alt="' + resource + '">';
        },

        getRequirementsForProduction(building) {
            let requirementList = '<br/>Uses';

            if (building.requires.wood) {
                requirementList += ' ' + building.requires.wood + ' ' + this.getResourceIcon('wood');
            }

            if (building.requires.stone) {
                requirementList += ' ' + building.requires.stone + ' ' + this.getResourceIcon('stone');
            }

            if (building.requires.coal) {
                requirementList += ' ' + building.requires.coal + ' ' + this.getResourceIcon('coal');
            }

            if (building.requires.iron) {
                requirementList += ' ' + building.requires.iron + ' ' + this.getResourceIcon('iron');
            }

            return requirementList + ' / ' + building.amount + ' ' + this.getResourceIconForBuilding(building);
        }
    },
});