import { sqlIdent } from "./sql-safe";
/**
 * # SQL Insert Generator
 */
export default function sqlInsertGenerator({ tableName, data, dbFullName, }) {
    const finalDbName = dbFullName
        ? `${sqlIdent(dbFullName, "database name")}.`
        : "";
    if (Array.isArray(data) && data?.[0]) {
        let insertKeys = [];
        data.forEach((dt) => {
            const kys = Object.keys(dt);
            kys.forEach((ky) => {
                if (!insertKeys.includes(ky)) {
                    insertKeys.push(sqlIdent(ky, "column name"));
                }
            });
        });
        let queryBatches = [];
        let queryValues = [];
        data.forEach((item) => {
            queryBatches.push(`(${insertKeys
                .map((ky) => {
                const value = item[ky];
                if (typeof value == "function") {
                    const fnValue = value();
                    queryValues.push(fnValue.value ?? null);
                    return fnValue.placeholder;
                }
                queryValues.push(sqlValue(value));
                return "?";
            })
                .join(",")})`);
        });
        let query = `INSERT INTO ${finalDbName}${sqlIdent(tableName, "table name")} (${insertKeys.join(",")}) VALUES ${queryBatches.join(",")}`;
        return {
            query: query,
            values: queryValues,
        };
    }
    else {
        return undefined;
    }
}
/**
 * # Normalize a JS value for binding
 * @description Keeps `0`, `""` and `false` (as `0`) instead of turning them
 * into `NULL`
 */
export function sqlValue(value) {
    if (value === undefined || value === null)
        return null;
    if (typeof value == "boolean")
        return value ? 1 : 0;
    return value;
}