"use strict";
var __awaiter = (this && this.__awaiter) || function (thisArg, _arguments, P, generator) {
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};
var __generator = (this && this.__generator) || function (thisArg, body) {
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Object.defineProperty(exports, "__esModule", { value: true });
/**
 * Creates complete tables schemas in the database based on the entity metadatas.
 *
 * Steps how schema is being built:
 * 1. load list of all tables with complete column and keys information from the db
 * 2. drop all (old) foreign keys that exist in the table, but does not exist in the metadata
 * 3. create new tables that does not exist in the db, but exist in the metadata
 * 4. drop all columns exist (left old) in the db table, but does not exist in the metadata
 * 5. add columns from metadata which does not exist in the table
 * 6. update all exist columns which metadata has changed
 * 7. update primary keys - update old and create new primary key from changed columns
 * 8. create foreign keys which does not exist in the table yet
 * 9. create indices which are missing in db yet, and drops indices which exist in the db, but does not exist in the metadata anymore
 */
var MongoSchemaBuilder = (function () {
    // -------------------------------------------------------------------------
    // Constructor
    // -------------------------------------------------------------------------
    function MongoSchemaBuilder(connection) {
        this.connection = connection;
    }
    // -------------------------------------------------------------------------
    // Public Methods
    // -------------------------------------------------------------------------
    /**
     * Creates complete schemas for the given entity metadatas.
     */
    MongoSchemaBuilder.prototype.build = function () {
        return __awaiter(this, void 0, void 0, function () {
            var queryRunner, promises;
            return __generator(this, function (_a) {
                switch (_a.label) {
                    case 0:
                        queryRunner = this.connection.driver.createQueryRunner();
                        promises = [];
                        this.connection.entityMetadatas.forEach(function (metadata) {
                            metadata.indices.forEach(function (index) {
                                var options = { name: index.name };
                                promises.push(queryRunner.createCollectionIndex(metadata.tableName, index.columnNamesWithOrderingMap, options));
                            });
                        });
                        return [4 /*yield*/, Promise.all(promises)];
                    case 1:
                        _a.sent();
                        return [2 /*return*/];
                }
            });
        });
    };
    return MongoSchemaBuilder;
}());
exports.MongoSchemaBuilder = MongoSchemaBuilder;

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