import { entityKind, is } from "../../entity.js";
import { PgTable } from "../table.js";
import { QueryPromise } from "../../query-promise.js";
import { SelectionProxyHandler } from "../../selection-proxy.js";
import { SQL } from "../../sql/sql.js";
import { Subquery } from "../../subquery.js";
import { getTableName, Table } from "../../table.js";
import {
  getTableLikeName,
  mapUpdateSet,
  orderSelectedFields
} from "../../utils.js";
import { ViewBaseConfig } from "../../view-common.js";
import { extractUsedTable } from "../utils.js";
class PgUpdateBuilder {
  constructor(table, session, dialect, withList) {
    this.table = table;
    this.session = session;
    this.dialect = dialect;
    this.withList = withList;
  }
  static [entityKind] = "PgUpdateBuilder";
  authToken;
  setToken(token) {
    this.authToken = token;
    return this;
  }
  set(values) {
    return new PgUpdateBase(
      this.table,
      mapUpdateSet(this.table, values),
      this.session,
      this.dialect,
      this.withList
    ).setToken(this.authToken);
  }
}
class PgUpdateBase extends QueryPromise {
  constructor(table, set, session, dialect, withList) {
    super();
    this.session = session;
    this.dialect = dialect;
    this.config = { set, table, withList, joins: [] };
    this.tableName = getTableLikeName(table);
    this.joinsNotNullableMap = typeof this.tableName === "string" ? { [this.tableName]: true } : {};
  }
  static [entityKind] = "PgUpdate";
  config;
  tableName;
  joinsNotNullableMap;
  cacheConfig;
  from(source) {
    const src = source;
    const tableName = getTableLikeName(src);
    if (typeof tableName === "string") {
      this.joinsNotNullableMap[tableName] = true;
    }
    this.config.from = src;
    return this;
  }
  getTableLikeFields(table) {
    if (is(table, PgTable)) {
      return table[Table.Symbol.Columns];
    } else if (is(table, Subquery)) {
      return table._.selectedFields;
    }
    return table[ViewBaseConfig].selectedFields;
  }
  createJoin(joinType) {
    return (table, on) => {
      const tableName = getTableLikeName(table);
      if (typeof tableName === "string" && this.config.joins.some((join) => join.alias === tableName)) {
        throw new Error(`Alias "${tableName}" is already used in this query`);
      }
      if (typeof on === "function") {
        const from = this.config.from && !is(this.config.from, SQL) ? this.getTableLikeFields(this.config.from) : void 0;
        on = on(
          new Proxy(
            this.config.table[Table.Symbol.Columns],
            new SelectionProxyHandler({ sqlAliasedBehavior: "sql", sqlBehavior: "sql" })
          ),
          from && new Proxy(
            from,
            new SelectionProxyHandler({ sqlAliasedBehavior: "sql", sqlBehavior: "sql" })
          )
        );
      }
      this.config.joins.push({ on, table, joinType, alias: tableName });
      if (typeof tableName === "string") {
        switch (joinType) {
          case "left": {
            this.joinsNotNullableMap[tableName] = false;
            break;
          }
          case "right": {
            this.joinsNotNullableMap = Object.fromEntries(
              Object.entries(this.joinsNotNullableMap).map(([key]) => [key, false])
            );
            this.joinsNotNullableMap[tableName] = true;
            break;
          }
          case "inner": {
            this.joinsNotNullableMap[tableName] = true;
            break;
          }
          case "full": {
            this.joinsNotNullableMap = Object.fromEntries(
              Object.entries(this.joinsNotNullableMap).map(([key]) => [key, false])
            );
            this.joinsNotNullableMap[tableName] = false;
            break;
          }
        }
      }
      return this;
    };
  }
  leftJoin = this.createJoin("left");
  rightJoin = this.createJoin("right");
  innerJoin = this.createJoin("inner");
  fullJoin = this.createJoin("full");
  /**
   * Adds a 'where' clause to the query.
   *
   * Calling this method will update only those rows that fulfill a specified condition.
   *
   * See docs: {@link https://orm.drizzle.team/docs/update}
   *
   * @param where the 'where' clause.
   *
   * @example
   * You can use conditional operators and `sql function` to filter the rows to be updated.
   *
   * ```ts
   * // Update all cars with green color
   * await db.update(cars).set({ color: 'red' })
   *   .where(eq(cars.color, 'green'));
   * // or
   * await db.update(cars).set({ color: 'red' })
   *   .where(sql`${cars.color} = 'green'`)
   * ```
   *
   * You can logically combine conditional operators with `and()` and `or()` operators:
   *
   * ```ts
   * // Update all BMW cars with a green color
   * await db.update(cars).set({ color: 'red' })
   *   .where(and(eq(cars.color, 'green'), eq(cars.brand, 'BMW')));
   *
   * // Update all cars with the green or blue color
   * await db.update(cars).set({ color: 'red' })
   *   .where(or(eq(cars.color, 'green'), eq(cars.color, 'blue')));
   * ```
   */
  where(where) {
    this.config.where = where;
    return this;
  }
  returning(fields) {
    if (!fields) {
      fields = Object.assign({}, this.config.table[Table.Symbol.Columns]);
      if (this.config.from) {
        const tableName = getTableLikeName(this.config.from);
        if (typeof tableName === "string" && this.config.from && !is(this.config.from, SQL)) {
          const fromFields = this.getTableLikeFields(this.config.from);
          fields[tableName] = fromFields;
        }
        for (const join of this.config.joins) {
          const tableName2 = getTableLikeName(join.table);
          if (typeof tableName2 === "string" && !is(join.table, SQL)) {
            const fromFields = this.getTableLikeFields(join.table);
            fields[tableName2] = fromFields;
          }
        }
      }
    }
    this.config.returningFields = fields;
    this.config.returning = orderSelectedFields(fields);
    return this;
  }
  /** @internal */
  getSQL() {
    return this.dialect.buildUpdateQuery(this.config);
  }
  toSQL() {
    const { typings: _typings, ...rest } = this.dialect.sqlToQuery(this.getSQL());
    return rest;
  }
  /** @internal */
  _prepare(name) {
    const query = this.session.prepareQuery(this.dialect.sqlToQuery(this.getSQL()), this.config.returning, name, true, void 0, {
      type: "insert",
      tables: extractUsedTable(this.config.table)
    }, this.cacheConfig);
    query.joinsNotNullableMap = this.joinsNotNullableMap;
    return query;
  }
  prepare(name) {
    return this._prepare(name);
  }
  authToken;
  /** @internal */
  setToken(token) {
    this.authToken = token;
    return this;
  }
  execute = (placeholderValues) => {
    return this._prepare().execute(placeholderValues, this.authToken);
  };
  /** @internal */
  getSelectedFields() {
    return this.config.returningFields ? new Proxy(
      this.config.returningFields,
      new SelectionProxyHandler({
        alias: getTableName(this.config.table),
        sqlAliasedBehavior: "alias",
        sqlBehavior: "error"
      })
    ) : void 0;
  }
  $dynamic() {
    return this;
  }
}
export {
  PgUpdateBase,
  PgUpdateBuilder
};
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