import ICommandOption, { Choice, CommandOptionDefinition, DependsOnMode, OptionType, ParseResult } from "../interfaces/CommandOption";
import IResolver from "../interfaces/Resolver";

class CommandOption implements ICommandOption {

    [key: string]: unknown;

    name: string;

    aliases: string[];

    // eslint-disable-next-line no-use-before-define
    options: CommandOption[];

    type: OptionType;

    minimum?: number;

    maximum?: number;

    flag: boolean;

    valueOptional: boolean;

    defaultValue: boolean | number | string | null;

    valueAsAlias: boolean;

    choices: Choice[];

    dependsOn: string[];

    dependsOnMode: DependsOnMode;

    required: boolean;

    rawValue?: string[];

    value?: unknown;

    aliased = false;

    private resolver?: IResolver<unknown, unknown, unknown, unknown>|undefined = undefined;

    constructor(def: CommandOptionDefinition|ICommandOption) {

        this.name = def.name;
        this.aliases = def.aliases || [];

        this.options = def.options || [];
        this.choices = def.choices || [];
        
        this.type = def.type || OptionType.STRING;
        this.flag = def.flag || false;

        this.valueOptional = def.valueOptional || false;
        this.defaultValue = def.defaultValue ?? null;
        this.valueAsAlias = def.valueAsAlias || false;
        
        this.dependsOn = def.dependsOn || [];
        this.dependsOnMode = def.dependsOnMode || 'AND';
        
        this.required = def.required || false;

    }

    clone(rawValue?: string[], resolver?: IResolver<unknown, unknown, unknown, unknown>): CommandOption {
        const opt = new CommandOption(this);
        opt.rawValue = rawValue;
        opt.resolver = resolver || undefined;
        return opt;
    }

    async parse(): Promise<ParseResult> {
        if(!this[OptionType[this.type]]) throw new Error(`Missing parsing function for ${this.type}`);
        const result = await this[OptionType[this.type]];
        return result as ParseResult;
    }

    get plural(): boolean {
        return this.type.toString().endsWith('S');
    }

    protected async MEMBER() {
        if (!this.resolver) throw new Error('Missing resolver');
        if(!this.rawValue) throw new Error('Missing raw value');
        const member = await this.resolver?.resolveMember(this.rawValue[0]);
        if (!member) return { error: true };
        return { value: member, removed: this.rawValue };
    }

}

export { CommandOption };
export default CommandOption;