const Component = require('./Component.js');
const { stripIndents } = require('common-tags');

class Command extends Component {

    constructor(manager, opts = {}) {
        if(!opts) return null;

        super(manager, {
            id: opts.name,
            type: 'command',
            disabled: opts.disabled || false,
            guarded: opts.guarded || false
        });

        this.manager = manager;

        this.name = opts.name;
        this.module = opts.module;
        this.aliases = opts.aliases || [];

        this.description = `C_${opts.name.toUpperCase()}_DESCRIPTION`;
        this.usage = opts.usage || '';
        this.examples = opts.examples || [];
        this.rawExamples = Boolean(opts.rawExamples);

        this.tags = opts.tags || [];

        this.restricted = Boolean(opts.restricted);
        this.showUsage = Boolean(opts.showUsage);
        this.guildOnly = Boolean(opts.guildOnly);
        
        this.archivable = opts.archivable === undefined ? true : Boolean(opts.archivable);
        this.arguments = opts.arguments || [];

        this.clientPermissions = opts.clientPermissions || [];
        this.memberPermissions = opts.memberPermissions || [];
        this.permissionRequired = opts.permissionRequired || opts.memberPermissions?.length > 0;

        this.throttling = opts.throttling || {
            usages: 5,
            duration: 10
        };

        this._throttles = new Map();
        this._invokes = {
            success: 0,
            fail: 0
        };

    }

    execute() {
        throw new Error(`${this.resolveable} is missing an execute function.`);
    }

    async checkPermissions() {
        //NOTE: Todo (move from permissions inhibitor)
    }

    usageEmbed(message, verbose = false) {

        const { guild } = message;
        const type = guild._settings.permissionType;
        const prefix = guild?.prefix || this.client.prefix;
        const fields = [];

        if (this.examples.length) {
            fields.push({
                name: `》 ${message.format('GENERAL_EXAMPLES')}`,
                value: this.examples.map((e) => this.rawExamples ? `\`${prefix}${e}\`` : `\`${prefix}${this.name} ${e}\``).join('\n')
            });
        }
        if (this.aliases.length && verbose) {
            fields.push({
                name: `》 ${message.format('GENERAL_ALIASES')}`,
                value: this.aliases.join(', ')
            });
        }
        if (this.arguments.length && verbose) {
            fields.push({
                name: `》 ${message.format('GENERAL_ARGUMENTS')}`,
                value: this.arguments.map((a) => `\`${a.types.length === 1 && a.types.includes('FLAG') ? '--' : ''}${a.name}${a.usage ? ` ${a.usage}` : ''}\`: ${message.format(`A_${a.name.toUpperCase()}_${this.name.toUpperCase()}_DESCRIPTION`)}`).join('\n')
            });
        }
        if (this.permissionRequired) {
            let required = [];
            if (type === 'discord') required = this.memberPermissions;
            else if (type === 'grant') required = [this.resolveable];
            else required = [this.resolveable, ...this.memberPermissions];

            fields.push({
                name: `》 ${message.format('GENERAL_PERMISSIONS')}`,
                value: `${message.format('GENERAL_PERMISSION_TYPE', {
                    required: required.join('`, `')
                })}`
            });
        }

        return {
            author: {
                name: `${this.name}${this.module ? ` (${this.module.resolveable})` : ''}`
            },
            description: stripIndents`\`${prefix}${this.name}${this.usage ? ` ${this.usage}` : ''}\`${this.guildOnly ? ' *(guild-only)*' : ''}
                ${message.format(this.description)}`,
            fields
        };

    }

    get moduleResolveable() {
        return `${this.module.id}:${this.id}`;
    }

}

module.exports = Command;