const Quest     = require("./Quest");
const quests    = require("../Data/quests");

class Quests {
    constructor(quests, doneCallback) {
        let currentQuest = quests[0];

        this.completedQuests = [];
		this.finishedQuests = {};
        this.completedQuestsAmount = {};
        this.doneCallback = doneCallback;
        this.list = {};
        this.list = quests.reduce((result, entry) => {
            this.completedQuestsAmount[entry.questID] = entry.completedAmount;
            if (entry.state === 1 || entry.state === 2) return result;

            const quest = this.add(entry.questID);
			if (!quest) return result;

            if (currentQuest.id !== entry.questID) {   
                result[entry.questID] = quest;
                currentQuest = quest;
            };
            
            if (!entry.amount) return result;

            const { typeID, entityTypeID } = result[entry.questID].task[entry.taskType][entry.taskIndex];
            currentQuest.adjustTask([{ 
                taskCategoryID: entry.taskType,
                typeID,
                entityTypeID
             }], entry.amount);

            return result;
        }, {});
    };

    add(id) {
        const questScheme = quests[id - 1];
        if (!questScheme) return;

        const isAcceptable = !questScheme.maximumComplete || questScheme.maximumComplete && questScheme.maximumComplete > this.completedQuestsAmount[id] || !this.completedQuestsAmount[id] && questScheme.maximumComplete;
        if (!isAcceptable) return;

        const isQuestAlreadyAdded = this.list[id];
        if (isQuestAlreadyAdded) return true;
        
        const quest = new Quest(questScheme, completedQuestID => {					            
            if (questScheme.maximumComplete !== -1) this.completedQuests.push(completedQuestID);

            if (!this.completedQuestsAmount[completedQuestID]) this.completedQuestsAmount[completedQuestID] = 1;
            else this.completedQuestsAmount[completedQuestID]++;

            const completedQuest = this.list[completedQuestID];
            this.doneCallback(completedQuest);
            this.remove(completedQuestID);
        });

        delete this.finishedQuests[id];

        this.list[id] = quest;

        return quest;
    }

    remove(id) {
        const questScheme = quests[id - 1];
        if (!questScheme) return;

        this.finishedQuests[id] = true;
        delete this.list[id];
    }
    
    has(id) {
        return this.list[id] ? true : false;
    }

    refresh(pirateLevel) {
        for (const id in this.list) {
            const questScheme = quests[+id - 1];            
            if (questScheme.maximumLevel < pirateLevel || questScheme.minimumLevel > pirateLevel) this.remove(+id);
        };
    }
};

module.exports = Quests;