import get from "../../actions/get";
import post from "../../actions/post";
import sqlGenerator from "../../functions/dsql/sql/sql-generator";
import {
    PostReturn,
    ServerQueryParam,
    ServerQueryQueryObject,
} from "../../types";
import numberfy from "../numberfy";

export const DsqlCrudActions = ["insert", "update", "delete", "get"] as const;

export type CrudQueryObject<T extends object = { [key: string]: any }> =
    ServerQueryParam & {
        query: ServerQueryQueryObject<T>;
    };

export type CrudParam<T extends object = { [key: string]: any }> = {
    action: (typeof DsqlCrudActions)[number];
    table: string;
    data?: T;
    targetId?: string | number;
    query?: CrudQueryObject<T>;
    sanitize?: (data?: T) => T;
};

export default async function dsqlCrud<
    T extends { [key: string]: any } = { [key: string]: any }
>({
    action,
    data,
    table,
    targetId,
    query,
    sanitize,
}: CrudParam<T>): Promise<
    | (PostReturn & {
          queryObject?: ReturnType<Awaited<typeof sqlGenerator>>;
      })
    | null
> {
    const finalData = sanitize ? sanitize(data) : data;
    const finalId = targetId;
    let queryObject: ReturnType<Awaited<typeof sqlGenerator>> | undefined;

    switch (action) {
        case "get":
            queryObject = sqlGenerator({
                tableName: table,
                genObject: query,
            });

            const GET_RES = await get({
                query: queryObject?.string || "",
                queryValues: queryObject?.values || [],
            });

            return { ...GET_RES, queryObject };

        case "insert":
            return await post({
                query: {
                    action: "insert",
                    table,
                    data: finalData,
                },
            });

        case "update":
            delete data?.id;

            return await post({
                query: {
                    action: "update",
                    table,
                    identifierColumnName: "id",
                    identifierValue: String(finalId),
                    data: finalData,
                },
            });

        case "delete":
            return await post({
                query: {
                    action: "delete",
                    table,
                    identifierColumnName: "id",
                    identifierValue: String(finalId),
                },
            });

        default:
            return null;
    }
}