"use strict";
/**
 * @license
 * Copyright Google LLC All Rights Reserved.
 *
 * Use of this source code is governed by an MIT-style license that can be
 * found in the LICENSE file at https://angular.io/license
 */
var __importDefault = (this && this.__importDefault) || function (mod) {
    return (mod && mod.__esModule) ? mod : { "default": mod };
};
Object.defineProperty(exports, "__esModule", { value: true });
exports.findAppConfig = void 0;
const path_1 = require("path");
const typescript_1 = __importDefault(require("../../third_party/github.com/Microsoft/TypeScript/lib/typescript"));
const util_1 = require("./util");
/**
 * Resolves the node that defines the app config from a bootstrap call.
 * @param bootstrapCall Call for which to resolve the config.
 * @param tree File tree of the project.
 * @param filePath File path of the bootstrap call.
 */
function findAppConfig(bootstrapCall, tree, filePath) {
    if (bootstrapCall.arguments.length > 1) {
        const config = bootstrapCall.arguments[1];
        if (typescript_1.default.isObjectLiteralExpression(config)) {
            return { filePath, node: config };
        }
        if (typescript_1.default.isIdentifier(config)) {
            return resolveAppConfigFromIdentifier(config, tree, filePath);
        }
    }
    return null;
}
exports.findAppConfig = findAppConfig;
/**
 * Resolves the app config from an identifier referring to it.
 * @param identifier Identifier referring to the app config.
 * @param tree File tree of the project.
 * @param bootstapFilePath Path of the bootstrap call.
 */
function resolveAppConfigFromIdentifier(identifier, tree, bootstapFilePath) {
    const sourceFile = identifier.getSourceFile();
    for (const node of sourceFile.statements) {
        // Only look at relative imports. This will break if the app uses a path
        // mapping to refer to the import, but in order to resolve those, we would
        // need knowledge about the entire program.
        if (!typescript_1.default.isImportDeclaration(node) ||
            !node.importClause?.namedBindings ||
            !typescript_1.default.isNamedImports(node.importClause.namedBindings) ||
            !typescript_1.default.isStringLiteralLike(node.moduleSpecifier) ||
            !node.moduleSpecifier.text.startsWith('.')) {
            continue;
        }
        for (const specifier of node.importClause.namedBindings.elements) {
            if (specifier.name.text !== identifier.text) {
                continue;
            }
            // Look for a variable with the imported name in the file. Note that ideally we would use
            // the type checker to resolve this, but we can't because these utilities are set up to
            // operate on individual files, not the entire program.
            const filePath = (0, path_1.join)((0, path_1.dirname)(bootstapFilePath), node.moduleSpecifier.text + '.ts');
            const importedSourceFile = (0, util_1.getSourceFile)(tree, filePath);
            const resolvedVariable = findAppConfigFromVariableName(importedSourceFile, (specifier.propertyName || specifier.name).text);
            if (resolvedVariable) {
                return { filePath, node: resolvedVariable };
            }
        }
    }
    const variableInSameFile = findAppConfigFromVariableName(sourceFile, identifier.text);
    return variableInSameFile ? { filePath: bootstapFilePath, node: variableInSameFile } : null;
}
/**
 * Finds an app config within the top-level variables of a file.
 * @param sourceFile File in which to search for the config.
 * @param variableName Name of the variable containing the config.
 */
function findAppConfigFromVariableName(sourceFile, variableName) {
    for (const node of sourceFile.statements) {
        if (typescript_1.default.isVariableStatement(node)) {
            for (const decl of node.declarationList.declarations) {
                if (typescript_1.default.isIdentifier(decl.name) &&
                    decl.name.text === variableName &&
                    decl.initializer &&
                    typescript_1.default.isObjectLiteralExpression(decl.initializer)) {
                    return decl.initializer;
                }
            }
        }
    }
    return null;
}