const { Util } = require('../../../util/');

const Constants = {
    MaxCharacters: 1024, // Max embed description is 2048 characters, however some of those description characters are going to usernames, types, filler text, etc.
    RemovedInfractions: ['BAN', 'SOFTBAN', 'KICK']
};

class Infraction {

    constructor(client, opts = {}) {

        this.client = client;
        this.message = opts.message; //NOT REQUIRED
        this.arguments = opts.arguments || {};

        this.target = opts.target; //User or channel being targeted. User object, not GuildMember.
        this.targetType = opts.targetType; // 'user' or 'channel'.
        this.executor = opts.executor; //Whoever executed the command. User object, not GuildMember.
        
        this.guild = opts.guild;
        this.channel = opts.channel;

        this.case = null; 
        this.type = opts.type; //What type of infraction (mute, kick, etc.)

        this.timestamp = Date.now();
        this.duration = isNaN(opts.duration) ? null : opts.duration; //How long the action will last. Must be in milliseconds.
        this.callback = isNaN(opts.duration) ? null : Date.now()+opts.duration*1000; //At what epoch(?) time it will callback.

        this.reason = opts.reason.length ? opts.reason : 'N/A';

        this.silent = opts.silent;

        this.points = opts.points || 0;
        this.totalPoints = 0;
        this.expiration = opts.expiration || 0;

        this.data = opts.data || {}; //Miscellaneous data that may need to be saved for future use.
        this.color = opts.color; //Infraction-defined hexadecimal value to dictate what color the embed is.
        this.dictionary = opts.dictionary || {}; // { past: 'banned', present: 'ban' } Infraction-defined object for the correct spellings.
        this.hyperlink = opts.hyperlink || null; // To overwrite hyperlink (if it's from a callback)

        this._logMessage = null; //The message embed sent in the moderation-log. Full message, not the ID.
        this._moderationLog = null; //Moderation log channel

    }

    async handle() {

        const { moderationLog } = this.guild._settings;

        this.guild._settings.caseId++;
        this.case = this.guild._settings.caseId;
        await this.guild._updateSettings({
            caseId: this.case
        }); 


        /* Logging */
        
        if(moderationLog.channel) {
            if(moderationLog.infractions.includes(this.type)) {
                this._moderationLog = await this.client.resolver.resolveChannel(moderationLog.channel, true, this.guild);
                if(!this._moderationLog) return undefined;
                this._logMessage = await this._moderationLog.send('', { embed: this.embed() });
            } else {
                this.client.logger.debug(`Did not log infraction ${this.type} because it is not in the infractions.`);
            }
        }

        if(this.guild._settings.dmInfraction.enabled
            && this.targetType === 'user' 
            && this.type !== 'NOTE') {
            let message = this.guild._settings.dmInfraction.custom[this.type] || this.guild._settings.dmInfraction.custom.default;
            if(!message) message = "";
            message = message
                .replace(/\{(guild|server)\}/ugim, this.guild.name)
                .replace(/\{user\}/ugim, this.target.tag)
                .replace(/\{infraction\}/ugim, this.dictionary.past)
                .replace(/\{from\|on\}/ugim, Constants.RemovedInfractions.includes(this.type) ? 'from' : 'on'); //add more if you want i should probably add a better system for this...
            try {
                this.target.send(message, {
                    embed: this.embed(true)
                });
            } catch(e) {} //eslint-disable-line no-empty
        }

        if(this.duration) {
            await this.client.moderationManager._handleExpirations([this.json]);
        }

        /* LMAOOOO PLEASE DONT JUDGE ME */
        if(this.data.roles && this.data.roles.length > 0) {
            this.data.roles = this.data.roles.map((r) => r.id);
        }

        return this.save();

    }

    async save() {
        return this.client.transactionHandler.send({
            provider: 'mongodb',
            request: {
                type: 'insertOne',
                collection: 'infractions',
                data: this.json
            }
        }).catch((error) => {
            this.client.logger.error(`There was an issue saving infraction data to the database.\n${error.stack || error}`);
        });
    }

    embed(dm = false) {

        let description = this.guild.format('INFRACTION_DESCRIPTION', {
            type: this.dictionary.past.toUpperCase(),
            moderator: `${Util.escapeMarkdown(this.executor.tag)}`,
            reason: Util.escapeMarkdown(this.reason.length > Constants.MaxCharacters ? `${this.reason.substring(0, Constants.MaxCharacters-3)}...` : this.reason, { italic: false, underline: false, strikethrough: false })
        });
        
        if(this.duration) {
            description += `\n${this.guild.format('INFRACTION_DESCRIPTIONDURATION', { duration: Util.duration(this.duration) })}`;
        }

        if(this.points > 0) {
            description += `\n${this.guild.format('INFRACTION_DESCRIPTIONPOINTS', { points: this.points, total: this.totalPoints })}`;
        }

        if(this.description && this.description instanceof Function) {
            description += this.description(dm);
        }

        if((!this.silent && (this.message || this.hyperlink)) && (dm && !Constants.RemovedInfractions.includes(this.type))) {
            description += `\n${this.guild.format('INFRACTION_DESCRIPTIONJUMPTO', { name: this.hyperlink ? 'Case' : 'Message', link: this.hyperlink ? this.hyperlink : `https://discord.com/channels/${this.guild.id}/${this.channel.id}/${this.message.id}` })}`;
        }

        return {
            author: {
                name: `${this.targetName} (${this.target.id})`,
                icon_url: this.targetIcon //eslint-disable-line camelcase
            },
            timestamp: new Date(),
            color: this.color,
            footer: {
                text: `》 Case ${this.case}`
            },
            description
        };
    }

    get json() {
        return {
            id: `${this.guild.id}:${this.case}`,
            guild: this.guild.id,
            channel: this.channel ? this.channel.id : null,
            message: this.message ? this.message.id : null,
            executor: this.executor.id,
            target: this.target.id,
            targetType: this.targetType,
            type: this.type,
            case: this.case,
            timestamp: this.timestamp,
            duration: this.duration,
            callback: this.callback,
            reason: this.reason,
            points: this.points,
            expiration: this.expiration,
            data: this.data,
            actions: this.actions,
            logMessage: this._logMessage ? this._logMessage.id : null, //the message id sent in modlog channel
            moderationLog: this._moderationLog ? this._moderationLog.id : null,
            callbacked: false
        };
    }

    get targetName() {
        return this.targetType === 'user'
            ? this.target.tag
            : `#${this.target.name}`;
    }

    get targetIcon() {
        return this.targetType === 'user'
            ? this.target.displayAvatarURL()
            : this.guild.iconURL();
    }

    get actions() {
        const actions = [];
        for(const argument of Object.values(this.arguments)) {
            if(['silent', 'prune', 'force'].includes(argument)) actions.push(argument);
        }
        return actions;
    }

    get _reason() {
        let str = `[${this.type}][targetId:${this.target.id}] Executed by ${this.executor.tag} (${this.executor.id}) because: ${this.reason}`;
        if(str.length > 512) str = `${this.reason.substring(0, 509)}...`;
        return str;
    }

    //Super Functions
    _succeed() {
        return {
            error: false,
            infraction: this
        };
    }

    _fail(message, fatal = false) {
        return {
            error: true,
            infraction: this,
            reason: message,
            fatal
        };
    }

    verify() {
        return this._verify();
    }
    
    _verify() {
        if(this.guild && this.guild._settings.protection.enabled) {
            const executorHighest = this.executor.roles.highest;
            const targetHighest = this.member.roles.highest;
            if(executorHighest.comparePositionTo(targetHighest) > 0) {
                return this._fail('INFRACTION_PROTECTIONERROR');
            }
        }
        return this._succeed();
    }

}

module.exports = Infraction;