var __extends = (this && this.__extends) || (function () {
    var extendStatics = Object.setPrototypeOf ||
        ({ __proto__: [] } instanceof Array && function (d, b) { d.__proto__ = b; }) ||
        function (d, b) { for (var p in b) if (b.hasOwnProperty(p)) d[p] = b[p]; };
    return function (d, b) {
        extendStatics(d, b);
        function __() { this.constructor = d; }
        d.prototype = b === null ? Object.create(b) : (__.prototype = b.prototype, new __());
    };
})();
var __awaiter = (this && this.__awaiter) || function (thisArg, _arguments, P, generator) {
    return new (P || (P = Promise))(function (resolve, reject) {
        function fulfilled(value) { try { step(generator.next(value)); } catch (e) { reject(e); } }
        function rejected(value) { try { step(generator["throw"](value)); } catch (e) { reject(e); } }
        function step(result) { result.done ? resolve(result.value) : new P(function (resolve) { resolve(result.value); }).then(fulfilled, rejected); }
        step((generator = generator.apply(thisArg, _arguments || [])).next());
    });
};
var __generator = (this && this.__generator) || function (thisArg, body) {
    var _ = { label: 0, sent: function() { if (t[0] & 1) throw t[1]; return t[1]; }, trys: [], ops: [] }, f, y, t, g;
    return g = { next: verb(0), "throw": verb(1), "return": verb(2) }, typeof Symbol === "function" && (g[Symbol.iterator] = function() { return this; }), g;
    function verb(n) { return function (v) { return step([n, v]); }; }
    function step(op) {
        if (f) throw new TypeError("Generator is already executing.");
        while (_) try {
            if (f = 1, y && (t = y[op[0] & 2 ? "return" : op[0] ? "throw" : "next"]) && !(t = t.call(y, op[1])).done) return t;
            if (y = 0, t) op = [0, t.value];
            switch (op[0]) {
                case 0: case 1: t = op; break;
                case 4: _.label++; return { value: op[1], done: false };
                case 5: _.label++; y = op[1]; op = [0]; continue;
                case 7: op = _.ops.pop(); _.trys.pop(); continue;
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                    if (!(t = _.trys, t = t.length > 0 && t[t.length - 1]) && (op[0] === 6 || op[0] === 2)) { _ = 0; continue; }
                    if (op[0] === 3 && (!t || (op[1] > t[0] && op[1] < t[3]))) { _.label = op[1]; break; }
                    if (op[0] === 6 && _.label < t[1]) { _.label = t[1]; t = op; break; }
                    if (t && _.label < t[2]) { _.label = t[2]; _.ops.push(op); break; }
                    if (t[2]) _.ops.pop();
                    _.trys.pop(); continue;
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        if (op[0] & 5) throw op[1]; return { value: op[0] ? op[1] : void 0, done: true };
    }
};
import { QueryBuilder } from "./QueryBuilder";
import { RelationUpdater } from "./RelationUpdater";
import { RelationRemover } from "./RelationRemover";
/**
 * Allows to work with entity relations and perform specific operations with those relations.
 *
 * todo: add transactions everywhere
 */
var RelationQueryBuilder = /** @class */ (function (_super) {
    __extends(RelationQueryBuilder, _super);
    function RelationQueryBuilder() {
        return _super !== null && _super.apply(this, arguments) || this;
    }
    // -------------------------------------------------------------------------
    // Public Implemented Methods
    // -------------------------------------------------------------------------
    /**
     * Gets generated sql query without parameters being replaced.
     */
    RelationQueryBuilder.prototype.getQuery = function () {
        return "";
    };
    // -------------------------------------------------------------------------
    // Public Methods
    // -------------------------------------------------------------------------
    /**
     * Sets entity (target) which relations will be updated.
     */
    RelationQueryBuilder.prototype.of = function (entity) {
        this.expressionMap.of = entity;
        return this;
    };
    /**
     * Sets entity relation's value.
     * Value can be entity, entity id or entity id map (if entity has composite ids).
     * Works only for many-to-one and one-to-one relations.
     * For many-to-many and one-to-many relations use #add and #remove methods instead.
     */
    RelationQueryBuilder.prototype.set = function (value) {
        return __awaiter(this, void 0, void 0, function () {
            var relation, updater;
            return __generator(this, function (_a) {
                relation = this.expressionMap.relationMetadata;
                if (!this.expressionMap.of)
                    throw new Error("Entity whose relation needs to be set is not set. Use .of method to define whose relation you want to set.");
                if (relation.isManyToMany || relation.isOneToMany)
                    throw new Error("Set operation is only supported for many-to-one and one-to-one relations. " +
                        ("However given \"" + relation.propertyPath + "\" has " + relation.relationType + " relation. ") +
                        "Use .add() method instead.");
                // if there are multiple join columns then user must send id map as "value" argument. check if he really did it
                if (relation.joinColumns &&
                    relation.joinColumns.length > 1 &&
                    (!(value instanceof Object) || Object.keys(value).length < relation.joinColumns.length))
                    throw new Error("Value to be set into the relation must be a map of relation ids, for example: .set({ firstName: \"...\", lastName: \"...\" })");
                updater = new RelationUpdater(this, this.expressionMap);
                return [2 /*return*/, updater.update(value)];
            });
        });
    };
    /**
     * Adds (binds) given value to entity relation.
     * Value can be entity, entity id or entity id map (if entity has composite ids).
     * Value also can be array of entities, array of entity ids or array of entity id maps (if entity has composite ids).
     * Works only for many-to-many and one-to-many relations.
     * For many-to-one and one-to-one use #set method instead.
     */
    RelationQueryBuilder.prototype.add = function (value) {
        return __awaiter(this, void 0, void 0, function () {
            var relation, updater;
            return __generator(this, function (_a) {
                if (value instanceof Array && value.length === 0)
                    return [2 /*return*/];
                relation = this.expressionMap.relationMetadata;
                if (!this.expressionMap.of)
                    throw new Error("Entity whose relation needs to be set is not set. Use .of method to define whose relation you want to set.");
                if (relation.isManyToOne || relation.isOneToOne)
                    throw new Error("Add operation is only supported for many-to-many and one-to-many relations. " +
                        ("However given \"" + relation.propertyPath + "\" has " + relation.relationType + " relation. ") +
                        "Use .set() method instead.");
                // if there are multiple join columns then user must send id map as "value" argument. check if he really did it
                if (relation.joinColumns &&
                    relation.joinColumns.length > 1 &&
                    (!(value instanceof Object) || Object.keys(value).length < relation.joinColumns.length))
                    throw new Error("Value to be set into the relation must be a map of relation ids, for example: .set({ firstName: \"...\", lastName: \"...\" })");
                updater = new RelationUpdater(this, this.expressionMap);
                return [2 /*return*/, updater.update(value)];
            });
        });
    };
    /**
     * Removes (unbinds) given value from entity relation.
     * Value can be entity, entity id or entity id map (if entity has composite ids).
     * Value also can be array of entities, array of entity ids or array of entity id maps (if entity has composite ids).
     * Works only for many-to-many and one-to-many relations.
     * For many-to-one and one-to-one use #set method instead.
     */
    RelationQueryBuilder.prototype.remove = function (value) {
        return __awaiter(this, void 0, void 0, function () {
            var relation, remover;
            return __generator(this, function (_a) {
                if (value instanceof Array && value.length === 0)
                    return [2 /*return*/];
                relation = this.expressionMap.relationMetadata;
                if (!this.expressionMap.of)
                    throw new Error("Entity whose relation needs to be set is not set. Use .of method to define whose relation you want to set.");
                if (relation.isManyToOne || relation.isOneToOne)
                    throw new Error("Add operation is only supported for many-to-many and one-to-many relations. " +
                        ("However given \"" + relation.propertyPath + "\" has " + relation.relationType + " relation. ") +
                        "Use .set(null) method instead.");
                remover = new RelationRemover(this, this.expressionMap);
                return [2 /*return*/, remover.remove(value)];
            });
        });
    };
    /**
     * Adds (binds) and removes (unbinds) given values to/from entity relation.
     * Value can be entity, entity id or entity id map (if entity has composite ids).
     * Value also can be array of entities, array of entity ids or array of entity id maps (if entity has composite ids).
     * Works only for many-to-many and one-to-many relations.
     * For many-to-one and one-to-one use #set method instead.
     */
    RelationQueryBuilder.prototype.addAndRemove = function (added, removed) {
        return __awaiter(this, void 0, void 0, function () {
            return __generator(this, function (_a) {
                switch (_a.label) {
                    case 0: return [4 /*yield*/, this.remove(removed)];
                    case 1:
                        _a.sent();
                        return [4 /*yield*/, this.add(added)];
                    case 2:
                        _a.sent();
                        return [2 /*return*/];
                }
            });
        });
    };
    /**
     * Gets entity's relation id.
    async getId(): Promise<any> {

    }*/
    /**
     * Gets entity's relation ids.
    async getIds(): Promise<any[]> {
        return [];
    }*/
    /**
     * Loads a single entity (relational) from the relation.
     * You can also provide id of relational entity to filter by.
     */
    RelationQueryBuilder.prototype.loadOne = function () {
        return __awaiter(this, void 0, void 0, function () {
            return __generator(this, function (_a) {
                return [2 /*return*/, this.loadMany().then(function (results) { return results[0]; })];
            });
        });
    };
    /**
     * Loads many entities (relational) from the relation.
     * You can also provide ids of relational entities to filter by.
     */
    RelationQueryBuilder.prototype.loadMany = function () {
        return __awaiter(this, void 0, void 0, function () {
            var of, metadata;
            return __generator(this, function (_a) {
                of = this.expressionMap.of;
                if (!(of instanceof Object)) {
                    metadata = this.expressionMap.mainAlias.metadata;
                    if (metadata.hasMultiplePrimaryKeys)
                        throw new Error("Cannot load entity because only one primary key was specified, however entity contains multiple primary keys");
                    of = metadata.primaryColumns[0].createValueMap(of);
                }
                return [2 /*return*/, this.connection.relationLoader.load(this.expressionMap.relationMetadata, of)];
            });
        });
    };
    return RelationQueryBuilder;
}(QueryBuilder));
export { RelationQueryBuilder };

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