import { eq } from 'drizzle-orm';
import toSnakeCase from 'to-snake-case';
import { buildFindManyArgs } from './find/buildFindManyArgs.js';
import { buildQuery } from './queries/buildQuery.js';
import { selectDistinct } from './queries/selectDistinct.js';
import { transform } from './transform/read/index.js';
import { getTransaction } from './utilities/getTransaction.js';
export const deleteOne = async function deleteOne({ collection: collectionSlug, req, returning, select, where: whereArg }) {
    const collection = this.payload.collections[collectionSlug].config;
    const tableName = this.tableNameMap.get(toSnakeCase(collection.slug));
    let docToDelete;
    const { joins, selectFields, where } = buildQuery({
        adapter: this,
        fields: collection.flattenedFields,
        locale: req?.locale,
        tableName,
        where: whereArg
    });
    const db = await getTransaction(this, req);
    const selectDistinctResult = await selectDistinct({
        adapter: this,
        db,
        joins,
        query: ({ query })=>query.limit(1),
        selectFields,
        tableName,
        where
    });
    if (selectDistinctResult?.[0]?.id) {
        docToDelete = await db.query[tableName].findFirst({
            where: eq(this.tables[tableName].id, selectDistinctResult[0].id)
        });
    } else {
        const findManyArgs = buildFindManyArgs({
            adapter: this,
            depth: 0,
            fields: collection.flattenedFields,
            joinQuery: false,
            select,
            tableName
        });
        findManyArgs.where = where;
        docToDelete = await db.query[tableName].findFirst(findManyArgs);
    }
    if (!docToDelete) {
        return null;
    }
    const result = returning === false ? null : transform({
        adapter: this,
        config: this.payload.config,
        data: docToDelete,
        fields: collection.flattenedFields,
        joinQuery: false,
        tableName
    });
    await this.deleteWhere({
        db,
        tableName,
        where: eq(this.tables[tableName].id, docToDelete.id)
    });
    return result;
};

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