import { and, eq, like } from "drizzle-orm";
import { Users } from "~drizzle/schema";
import type { User } from "~packages/database-interface/user";
import { BaseCommand } from "./base";
import { Args, Flags, type Command, type Interfaces } from "@oclif/core";

export type FlagsType<T extends typeof Command> = Interfaces.InferredFlags<
    (typeof BaseCommand)["baseFlags"] & T["flags"]
>;
export type ArgsType<T extends typeof Command> = Interfaces.InferredArgs<
    T["args"]
>;

export abstract class UserFinderCommand<
    T extends typeof BaseCommand,
> extends BaseCommand<typeof UserFinderCommand> {
    static baseFlags = {
        pattern: Flags.boolean({
            char: "p",
            description:
                "Process as a wildcard pattern (don't forget to escape)",
        }),
        type: Flags.string({
            char: "t",
            description: "Type of identifier",
            options: ["id", "username", "note", "display-name", "email"],
            default: "id",
        }),
        limit: Flags.integer({
            char: "n",
            description: "Limit the number of users",
            default: 100,
        }),
        print: Flags.boolean({
            allowNo: true,
            default: true,
            char: "P",
            description: "Print user(s) found before processing",
        }),
    };

    static baseArgs = {
        identifier: Args.string({
            description:
                "Identifier of the user (by default this must be an ID)",
            required: true,
        }),
    };

    protected flags!: FlagsType<T>;
    protected args!: ArgsType<T>;

    public async init(): Promise<void> {
        await super.init();
        const { args, flags } = await this.parse({
            flags: this.ctor.flags,
            baseFlags: (super.ctor as typeof BaseCommand).baseFlags,
            args: this.ctor.args,
            strict: this.ctor.strict,
        });
        this.flags = flags as FlagsType<T>;
        this.args = args as ArgsType<T>;
    }

    public async findUsers(): Promise<User[]> {
        const operator = this.flags.pattern ? like : eq;
        // Replace wildcards with an SQL LIKE pattern
        const identifier = this.flags.pattern
            ? this.args.identifier.replace(/\*/g, "%")
            : this.args.identifier;

        const { User } = await import("~packages/database-interface/user");

        return await User.manyFromSql(
            and(
                this.flags.type === "id"
                    ? operator(Users.id, identifier)
                    : undefined,
                this.flags.type === "username"
                    ? operator(Users.username, identifier)
                    : undefined,
                this.flags.type === "note"
                    ? operator(Users.note, identifier)
                    : undefined,
                this.flags.type === "display-name"
                    ? operator(Users.displayName, identifier)
                    : undefined,
                this.flags.type === "email"
                    ? operator(Users.email, identifier)
                    : undefined,
            ),
            undefined,
            this.flags.limit,
        );
    }
}