import { aliasedTable, aliasedTableColumn, mapColumnsInAliasedSQLToAlias, mapColumnsInSQLToAlias } from "../alias.js";
import { CasingCache } from "../casing.js";
import { Column } from "../column.js";
import { entityKind, is } from "../entity.js";
import { DrizzleError } from "../errors.js";
import {
  getOperators,
  getOrderByOperators,
  Many,
  normalizeRelation,
  One
} from "../relations.js";
import { and, eq } from "../sql/index.js";
import { Param, SQL, sql } from "../sql/sql.js";
import { SQLiteColumn } from "./columns/index.js";
import { SQLiteTable } from "./table.js";
import { Subquery } from "../subquery.js";
import { getTableName, getTableUniqueName, Table } from "../table.js";
import { orderSelectedFields } from "../utils.js";
import { ViewBaseConfig } from "../view-common.js";
import { SQLiteViewBase } from "./view-base.js";
class SQLiteDialect {
  static [entityKind] = "SQLiteDialect";
  /** @internal */
  casing;
  constructor(config) {
    this.casing = new CasingCache(config?.casing);
  }
  escapeName(name) {
    return `"${name}"`;
  }
  escapeParam(_num) {
    return "?";
  }
  escapeString(str) {
    return `'${str.replace(/'/g, "''")}'`;
  }
  buildWithCTE(queries) {
    if (!queries?.length)
      return void 0;
    const withSqlChunks = [sql`with `];
    for (const [i, w] of queries.entries()) {
      withSqlChunks.push(sql`${sql.identifier(w._.alias)} as (${w._.sql})`);
      if (i < queries.length - 1) {
        withSqlChunks.push(sql`, `);
      }
    }
    withSqlChunks.push(sql` `);
    return sql.join(withSqlChunks);
  }
  buildDeleteQuery({ table, where, returning, withList, limit, orderBy }) {
    const withSql = this.buildWithCTE(withList);
    const returningSql = returning ? sql` returning ${this.buildSelection(returning, { isSingleTable: true })}` : void 0;
    const whereSql = where ? sql` where ${where}` : void 0;
    const orderBySql = this.buildOrderBy(orderBy);
    const limitSql = this.buildLimit(limit);
    return sql`${withSql}delete from ${table}${whereSql}${returningSql}${orderBySql}${limitSql}`;
  }
  buildUpdateSet(table, set) {
    const tableColumns = table[Table.Symbol.Columns];
    const columnNames = Object.keys(tableColumns).filter(
      (colName) => set[colName] !== void 0 || tableColumns[colName]?.onUpdateFn !== void 0
    );
    const setSize = columnNames.length;
    return sql.join(columnNames.flatMap((colName, i) => {
      const col = tableColumns[colName];
      const value = set[colName] ?? sql.param(col.onUpdateFn(), col);
      const res = sql`${sql.identifier(this.casing.getColumnCasing(col))} = ${value}`;
      if (i < setSize - 1) {
        return [res, sql.raw(", ")];
      }
      return [res];
    }));
  }
  buildUpdateQuery({ table, set, where, returning, withList, joins, from, limit, orderBy }) {
    const withSql = this.buildWithCTE(withList);
    const setSql = this.buildUpdateSet(table, set);
    const fromSql = from && sql.join([sql.raw(" from "), this.buildFromTable(from)]);
    const joinsSql = this.buildJoins(joins);
    const returningSql = returning ? sql` returning ${this.buildSelection(returning, { isSingleTable: true })}` : void 0;
    const whereSql = where ? sql` where ${where}` : void 0;
    const orderBySql = this.buildOrderBy(orderBy);
    const limitSql = this.buildLimit(limit);
    return sql`${withSql}update ${table} set ${setSql}${fromSql}${joinsSql}${whereSql}${returningSql}${orderBySql}${limitSql}`;
  }
  /**
   * Builds selection SQL with provided fields/expressions
   *
   * Examples:
   *
   * `select <selection> from`
   *
   * `insert ... returning <selection>`
   *
   * If `isSingleTable` is true, then columns won't be prefixed with table name
   */
  buildSelection(fields, { isSingleTable = false } = {}) {
    const columnsLen = fields.length;
    const chunks = fields.flatMap(({ field }, i) => {
      const chunk = [];
      if (is(field, SQL.Aliased) && field.isSelectionField) {
        chunk.push(sql.identifier(field.fieldAlias));
      } else if (is(field, SQL.Aliased) || is(field, SQL)) {
        const query = is(field, SQL.Aliased) ? field.sql : field;
        if (isSingleTable) {
          chunk.push(
            new SQL(
              query.queryChunks.map((c) => {
                if (is(c, Column)) {
                  return sql.identifier(this.casing.getColumnCasing(c));
                }
                return c;
              })
            )
          );
        } else {
          chunk.push(query);
        }
        if (is(field, SQL.Aliased)) {
          chunk.push(sql` as ${sql.identifier(field.fieldAlias)}`);
        }
      } else if (is(field, Column)) {
        const tableName = field.table[Table.Symbol.Name];
        if (isSingleTable) {
          chunk.push(sql.identifier(this.casing.getColumnCasing(field)));
        } else {
          chunk.push(sql`${sql.identifier(tableName)}.${sql.identifier(this.casing.getColumnCasing(field))}`);
        }
      }
      if (i < columnsLen - 1) {
        chunk.push(sql`, `);
      }
      return chunk;
    });
    return sql.join(chunks);
  }
  buildJoins(joins) {
    if (!joins || joins.length === 0) {
      return void 0;
    }
    const joinsArray = [];
    if (joins) {
      for (const [index, joinMeta] of joins.entries()) {
        if (index === 0) {
          joinsArray.push(sql` `);
        }
        const table = joinMeta.table;
        if (is(table, SQLiteTable)) {
          const tableName = table[SQLiteTable.Symbol.Name];
          const tableSchema = table[SQLiteTable.Symbol.Schema];
          const origTableName = table[SQLiteTable.Symbol.OriginalName];
          const alias = tableName === origTableName ? void 0 : joinMeta.alias;
          joinsArray.push(
            sql`${sql.raw(joinMeta.joinType)} join ${tableSchema ? sql`${sql.identifier(tableSchema)}.` : void 0}${sql.identifier(origTableName)}${alias && sql` ${sql.identifier(alias)}`} on ${joinMeta.on}`
          );
        } else {
          joinsArray.push(
            sql`${sql.raw(joinMeta.joinType)} join ${table} on ${joinMeta.on}`
          );
        }
        if (index < joins.length - 1) {
          joinsArray.push(sql` `);
        }
      }
    }
    return sql.join(joinsArray);
  }
  buildLimit(limit) {
    return typeof limit === "object" || typeof limit === "number" && limit >= 0 ? sql` limit ${limit}` : void 0;
  }
  buildOrderBy(orderBy) {
    const orderByList = [];
    if (orderBy) {
      for (const [index, orderByValue] of orderBy.entries()) {
        orderByList.push(orderByValue);
        if (index < orderBy.length - 1) {
          orderByList.push(sql`, `);
        }
      }
    }
    return orderByList.length > 0 ? sql` order by ${sql.join(orderByList)}` : void 0;
  }
  buildFromTable(table) {
    if (is(table, Table) && table[Table.Symbol.OriginalName] !== table[Table.Symbol.Name]) {
      return sql`${sql.identifier(table[Table.Symbol.OriginalName])} ${sql.identifier(table[Table.Symbol.Name])}`;
    }
    return table;
  }
  buildSelectQuery({
    withList,
    fields,
    fieldsFlat,
    where,
    having,
    table,
    joins,
    orderBy,
    groupBy,
    limit,
    offset,
    distinct,
    setOperators
  }) {
    const fieldsList = fieldsFlat ?? orderSelectedFields(fields);
    for (const f of fieldsList) {
      if (is(f.field, Column) && getTableName(f.field.table) !== (is(table, Subquery) ? table._.alias : is(table, SQLiteViewBase) ? table[ViewBaseConfig].name : is(table, SQL) ? void 0 : getTableName(table)) && !((table2) => joins?.some(
        ({ alias }) => alias === (table2[Table.Symbol.IsAlias] ? getTableName(table2) : table2[Table.Symbol.BaseName])
      ))(f.field.table)) {
        const tableName = getTableName(f.field.table);
        throw new Error(
          `Your "${f.path.join("->")}" field references a column "${tableName}"."${f.field.name}", but the table "${tableName}" is not part of the query! Did you forget to join it?`
        );
      }
    }
    const isSingleTable = !joins || joins.length === 0;
    const withSql = this.buildWithCTE(withList);
    const distinctSql = distinct ? sql` distinct` : void 0;
    const selection = this.buildSelection(fieldsList, { isSingleTable });
    const tableSql = this.buildFromTable(table);
    const joinsSql = this.buildJoins(joins);
    const whereSql = where ? sql` where ${where}` : void 0;
    const havingSql = having ? sql` having ${having}` : void 0;
    const groupByList = [];
    if (groupBy) {
      for (const [index, groupByValue] of groupBy.entries()) {
        groupByList.push(groupByValue);
        if (index < groupBy.length - 1) {
          groupByList.push(sql`, `);
        }
      }
    }
    const groupBySql = groupByList.length > 0 ? sql` group by ${sql.join(groupByList)}` : void 0;
    const orderBySql = this.buildOrderBy(orderBy);
    const limitSql = this.buildLimit(limit);
    const offsetSql = offset ? sql` offset ${offset}` : void 0;
    const finalQuery = sql`${withSql}select${distinctSql} ${selection} from ${tableSql}${joinsSql}${whereSql}${groupBySql}${havingSql}${orderBySql}${limitSql}${offsetSql}`;
    if (setOperators.length > 0) {
      return this.buildSetOperations(finalQuery, setOperators);
    }
    return finalQuery;
  }
  buildSetOperations(leftSelect, setOperators) {
    const [setOperator, ...rest] = setOperators;
    if (!setOperator) {
      throw new Error("Cannot pass undefined values to any set operator");
    }
    if (rest.length === 0) {
      return this.buildSetOperationQuery({ leftSelect, setOperator });
    }
    return this.buildSetOperations(
      this.buildSetOperationQuery({ leftSelect, setOperator }),
      rest
    );
  }
  buildSetOperationQuery({
    leftSelect,
    setOperator: { type, isAll, rightSelect, limit, orderBy, offset }
  }) {
    const leftChunk = sql`${leftSelect.getSQL()} `;
    const rightChunk = sql`${rightSelect.getSQL()}`;
    let orderBySql;
    if (orderBy && orderBy.length > 0) {
      const orderByValues = [];
      for (const singleOrderBy of orderBy) {
        if (is(singleOrderBy, SQLiteColumn)) {
          orderByValues.push(sql.identifier(singleOrderBy.name));
        } else if (is(singleOrderBy, SQL)) {
          for (let i = 0; i < singleOrderBy.queryChunks.length; i++) {
            const chunk = singleOrderBy.queryChunks[i];
            if (is(chunk, SQLiteColumn)) {
              singleOrderBy.queryChunks[i] = sql.identifier(this.casing.getColumnCasing(chunk));
            }
          }
          orderByValues.push(sql`${singleOrderBy}`);
        } else {
          orderByValues.push(sql`${singleOrderBy}`);
        }
      }
      orderBySql = sql` order by ${sql.join(orderByValues, sql`, `)}`;
    }
    const limitSql = typeof limit === "object" || typeof limit === "number" && limit >= 0 ? sql` limit ${limit}` : void 0;
    const operatorChunk = sql.raw(`${type} ${isAll ? "all " : ""}`);
    const offsetSql = offset ? sql` offset ${offset}` : void 0;
    return sql`${leftChunk}${operatorChunk}${rightChunk}${orderBySql}${limitSql}${offsetSql}`;
  }
  buildInsertQuery({ table, values: valuesOrSelect, onConflict, returning, withList, select }) {
    const valuesSqlList = [];
    const columns = table[Table.Symbol.Columns];
    const colEntries = Object.entries(columns).filter(
      ([_, col]) => !col.shouldDisableInsert()
    );
    const insertOrder = colEntries.map(([, column]) => sql.identifier(this.casing.getColumnCasing(column)));
    if (select) {
      const select2 = valuesOrSelect;
      if (is(select2, SQL)) {
        valuesSqlList.push(select2);
      } else {
        valuesSqlList.push(select2.getSQL());
      }
    } else {
      const values = valuesOrSelect;
      valuesSqlList.push(sql.raw("values "));
      for (const [valueIndex, value] of values.entries()) {
        const valueList = [];
        for (const [fieldName, col] of colEntries) {
          const colValue = value[fieldName];
          if (colValue === void 0 || is(colValue, Param) && colValue.value === void 0) {
            let defaultValue;
            if (col.default !== null && col.default !== void 0) {
              defaultValue = is(col.default, SQL) ? col.default : sql.param(col.default, col);
            } else if (col.defaultFn !== void 0) {
              const defaultFnResult = col.defaultFn();
              defaultValue = is(defaultFnResult, SQL) ? defaultFnResult : sql.param(defaultFnResult, col);
            } else if (!col.default && col.onUpdateFn !== void 0) {
              const onUpdateFnResult = col.onUpdateFn();
              defaultValue = is(onUpdateFnResult, SQL) ? onUpdateFnResult : sql.param(onUpdateFnResult, col);
            } else {
              defaultValue = sql`null`;
            }
            valueList.push(defaultValue);
          } else {
            valueList.push(colValue);
          }
        }
        valuesSqlList.push(valueList);
        if (valueIndex < values.length - 1) {
          valuesSqlList.push(sql`, `);
        }
      }
    }
    const withSql = this.buildWithCTE(withList);
    const valuesSql = sql.join(valuesSqlList);
    const returningSql = returning ? sql` returning ${this.buildSelection(returning, { isSingleTable: true })}` : void 0;
    const onConflictSql = onConflict ? sql` on conflict ${onConflict}` : void 0;
    return sql`${withSql}insert into ${table} ${insertOrder} ${valuesSql}${onConflictSql}${returningSql}`;
  }
  sqlToQuery(sql2, invokeSource) {
    return sql2.toQuery({
      casing: this.casing,
      escapeName: this.escapeName,
      escapeParam: this.escapeParam,
      escapeString: this.escapeString,
      invokeSource
    });
  }
  buildRelationalQuery({
    fullSchema,
    schema,
    tableNamesMap,
    table,
    tableConfig,
    queryConfig: config,
    tableAlias,
    nestedQueryRelation,
    joinOn
  }) {
    let selection = [];
    let limit, offset, orderBy = [], where;
    const joins = [];
    if (config === true) {
      const selectionEntries = Object.entries(tableConfig.columns);
      selection = selectionEntries.map(([key, value]) => ({
        dbKey: value.name,
        tsKey: key,
        field: aliasedTableColumn(value, tableAlias),
        relationTableTsKey: void 0,
        isJson: false,
        selection: []
      }));
    } else {
      const aliasedColumns = Object.fromEntries(
        Object.entries(tableConfig.columns).map(([key, value]) => [key, aliasedTableColumn(value, tableAlias)])
      );
      if (config.where) {
        const whereSql = typeof config.where === "function" ? config.where(aliasedColumns, getOperators()) : config.where;
        where = whereSql && mapColumnsInSQLToAlias(whereSql, tableAlias);
      }
      const fieldsSelection = [];
      let selectedColumns = [];
      if (config.columns) {
        let isIncludeMode = false;
        for (const [field, value] of Object.entries(config.columns)) {
          if (value === void 0) {
            continue;
          }
          if (field in tableConfig.columns) {
            if (!isIncludeMode && value === true) {
              isIncludeMode = true;
            }
            selectedColumns.push(field);
          }
        }
        if (selectedColumns.length > 0) {
          selectedColumns = isIncludeMode ? selectedColumns.filter((c) => config.columns?.[c] === true) : Object.keys(tableConfig.columns).filter((key) => !selectedColumns.includes(key));
        }
      } else {
        selectedColumns = Object.keys(tableConfig.columns);
      }
      for (const field of selectedColumns) {
        const column = tableConfig.columns[field];
        fieldsSelection.push({ tsKey: field, value: column });
      }
      let selectedRelations = [];
      if (config.with) {
        selectedRelations = Object.entries(config.with).filter((entry) => !!entry[1]).map(([tsKey, queryConfig]) => ({ tsKey, queryConfig, relation: tableConfig.relations[tsKey] }));
      }
      let extras;
      if (config.extras) {
        extras = typeof config.extras === "function" ? config.extras(aliasedColumns, { sql }) : config.extras;
        for (const [tsKey, value] of Object.entries(extras)) {
          fieldsSelection.push({
            tsKey,
            value: mapColumnsInAliasedSQLToAlias(value, tableAlias)
          });
        }
      }
      for (const { tsKey, value } of fieldsSelection) {
        selection.push({
          dbKey: is(value, SQL.Aliased) ? value.fieldAlias : tableConfig.columns[tsKey].name,
          tsKey,
          field: is(value, Column) ? aliasedTableColumn(value, tableAlias) : value,
          relationTableTsKey: void 0,
          isJson: false,
          selection: []
        });
      }
      let orderByOrig = typeof config.orderBy === "function" ? config.orderBy(aliasedColumns, getOrderByOperators()) : config.orderBy ?? [];
      if (!Array.isArray(orderByOrig)) {
        orderByOrig = [orderByOrig];
      }
      orderBy = orderByOrig.map((orderByValue) => {
        if (is(orderByValue, Column)) {
          return aliasedTableColumn(orderByValue, tableAlias);
        }
        return mapColumnsInSQLToAlias(orderByValue, tableAlias);
      });
      limit = config.limit;
      offset = config.offset;
      for (const {
        tsKey: selectedRelationTsKey,
        queryConfig: selectedRelationConfigValue,
        relation
      } of selectedRelations) {
        const normalizedRelation = normalizeRelation(schema, tableNamesMap, relation);
        const relationTableName = getTableUniqueName(relation.referencedTable);
        const relationTableTsName = tableNamesMap[relationTableName];
        const relationTableAlias = `${tableAlias}_${selectedRelationTsKey}`;
        const joinOn2 = and(
          ...normalizedRelation.fields.map(
            (field2, i) => eq(
              aliasedTableColumn(normalizedRelation.references[i], relationTableAlias),
              aliasedTableColumn(field2, tableAlias)
            )
          )
        );
        const builtRelation = this.buildRelationalQuery({
          fullSchema,
          schema,
          tableNamesMap,
          table: fullSchema[relationTableTsName],
          tableConfig: schema[relationTableTsName],
          queryConfig: is(relation, One) ? selectedRelationConfigValue === true ? { limit: 1 } : { ...selectedRelationConfigValue, limit: 1 } : selectedRelationConfigValue,
          tableAlias: relationTableAlias,
          joinOn: joinOn2,
          nestedQueryRelation: relation
        });
        const field = sql`(${builtRelation.sql})`.as(selectedRelationTsKey);
        selection.push({
          dbKey: selectedRelationTsKey,
          tsKey: selectedRelationTsKey,
          field,
          relationTableTsKey: relationTableTsName,
          isJson: true,
          selection: builtRelation.selection
        });
      }
    }
    if (selection.length === 0) {
      throw new DrizzleError({
        message: `No fields selected for table "${tableConfig.tsName}" ("${tableAlias}"). You need to have at least one item in "columns", "with" or "extras". If you need to select all columns, omit the "columns" key or set it to undefined.`
      });
    }
    let result;
    where = and(joinOn, where);
    if (nestedQueryRelation) {
      let field = sql`json_array(${sql.join(
        selection.map(
          ({ field: field2 }) => is(field2, SQLiteColumn) ? sql.identifier(this.casing.getColumnCasing(field2)) : is(field2, SQL.Aliased) ? field2.sql : field2
        ),
        sql`, `
      )})`;
      if (is(nestedQueryRelation, Many)) {
        field = sql`coalesce(json_group_array(${field}), json_array())`;
      }
      const nestedSelection = [{
        dbKey: "data",
        tsKey: "data",
        field: field.as("data"),
        isJson: true,
        relationTableTsKey: tableConfig.tsName,
        selection
      }];
      const needsSubquery = limit !== void 0 || offset !== void 0 || orderBy.length > 0;
      if (needsSubquery) {
        result = this.buildSelectQuery({
          table: aliasedTable(table, tableAlias),
          fields: {},
          fieldsFlat: [
            {
              path: [],
              field: sql.raw("*")
            }
          ],
          where,
          limit,
          offset,
          orderBy,
          setOperators: []
        });
        where = void 0;
        limit = void 0;
        offset = void 0;
        orderBy = void 0;
      } else {
        result = aliasedTable(table, tableAlias);
      }
      result = this.buildSelectQuery({
        table: is(result, SQLiteTable) ? result : new Subquery(result, {}, tableAlias),
        fields: {},
        fieldsFlat: nestedSelection.map(({ field: field2 }) => ({
          path: [],
          field: is(field2, Column) ? aliasedTableColumn(field2, tableAlias) : field2
        })),
        joins,
        where,
        limit,
        offset,
        orderBy,
        setOperators: []
      });
    } else {
      result = this.buildSelectQuery({
        table: aliasedTable(table, tableAlias),
        fields: {},
        fieldsFlat: selection.map(({ field }) => ({
          path: [],
          field: is(field, Column) ? aliasedTableColumn(field, tableAlias) : field
        })),
        joins,
        where,
        limit,
        offset,
        orderBy,
        setOperators: []
      });
    }
    return {
      tableTsKey: tableConfig.tsName,
      sql: result,
      selection
    };
  }
}
class SQLiteSyncDialect extends SQLiteDialect {
  static [entityKind] = "SQLiteSyncDialect";
  migrate(migrations, session, config) {
    const migrationsTable = config === void 0 ? "__drizzle_migrations" : typeof config === "string" ? "__drizzle_migrations" : config.migrationsTable ?? "__drizzle_migrations";
    const migrationTableCreate = sql`
			CREATE TABLE IF NOT EXISTS ${sql.identifier(migrationsTable)} (
				id SERIAL PRIMARY KEY,
				hash text NOT NULL,
				created_at numeric
			)
		`;
    session.run(migrationTableCreate);
    const dbMigrations = session.values(
      sql`SELECT id, hash, created_at FROM ${sql.identifier(migrationsTable)} ORDER BY created_at DESC LIMIT 1`
    );
    const lastDbMigration = dbMigrations[0] ?? void 0;
    session.run(sql`BEGIN`);
    try {
      for (const migration of migrations) {
        if (!lastDbMigration || Number(lastDbMigration[2]) < migration.folderMillis) {
          for (const stmt of migration.sql) {
            session.run(sql.raw(stmt));
          }
          session.run(
            sql`INSERT INTO ${sql.identifier(migrationsTable)} ("hash", "created_at") VALUES(${migration.hash}, ${migration.folderMillis})`
          );
        }
      }
      session.run(sql`COMMIT`);
    } catch (e) {
      session.run(sql`ROLLBACK`);
      throw e;
    }
  }
}
class SQLiteAsyncDialect extends SQLiteDialect {
  static [entityKind] = "SQLiteAsyncDialect";
  async migrate(migrations, session, config) {
    const migrationsTable = config === void 0 ? "__drizzle_migrations" : typeof config === "string" ? "__drizzle_migrations" : config.migrationsTable ?? "__drizzle_migrations";
    const migrationTableCreate = sql`
			CREATE TABLE IF NOT EXISTS ${sql.identifier(migrationsTable)} (
				id SERIAL PRIMARY KEY,
				hash text NOT NULL,
				created_at numeric
			)
		`;
    await session.run(migrationTableCreate);
    const dbMigrations = await session.values(
      sql`SELECT id, hash, created_at FROM ${sql.identifier(migrationsTable)} ORDER BY created_at DESC LIMIT 1`
    );
    const lastDbMigration = dbMigrations[0] ?? void 0;
    await session.transaction(async (tx) => {
      for (const migration of migrations) {
        if (!lastDbMigration || Number(lastDbMigration[2]) < migration.folderMillis) {
          for (const stmt of migration.sql) {
            await tx.run(sql.raw(stmt));
          }
          await tx.run(
            sql`INSERT INTO ${sql.identifier(migrationsTable)} ("hash", "created_at") VALUES(${migration.hash}, ${migration.folderMillis})`
          );
        }
      }
    });
  }
}
export {
  SQLiteAsyncDialect,
  SQLiteDialect,
  SQLiteSyncDialect
};
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