import {
    DSQL_MYSQL_FOREIGN_KEYS_Type,
    DSQL_MYSQL_SHOW_INDEXES_Type,
    DSQL_UniqueConstraintSchemaType,
} from "../../types";
import dbHandler from "../../functions/backend/dbHandler";
import AppData from "../../data/app-data";
import normalizeText from "../../utils/normalize-text";

type Param = {
    tableName: string;
    dbFullName: string;
    tableUniqueConstraints: DSQL_UniqueConstraintSchemaType[];
};

/**
 * Handle DATASQUIREL Table Unique Constraints
 * ===================================================
 * @description Iterate through each datasquirel schema
 * table unique constraint(if available), and perform operations
 */
export default async function handleUniqueConstraintsCreateDbFromSchema({
    dbFullName,
    tableName,
    tableUniqueConstraints,
}: Param) {
    /**
     * # Re-Add New Constraints
     */
    for (let g = 0; g < tableUniqueConstraints.length; g++) {
        const { constraintName, alias, constraintTableFields } =
            tableUniqueConstraints[g];

        if (!alias?.match(/./)) continue;

        /**
         * @description Create new index if determined that it
         * doesn't exist in MYSQL db
         */
        const queryString = `CREATE UNIQUE INDEX \`${alias}\` ON \`${dbFullName}\`.\`${tableName}\`(${constraintTableFields
            ?.map((nm) => nm.value)
            .map((nm) => `\`${nm}\``)
            .join(",")}) COMMENT '${
            AppData["UniqueConstraintComment"]
        } ${constraintName}'`;

        const addIndex = await dbHandler({ query: queryString });
    }
}