/// <reference path="./mathcoach-api.d.ts"/>
var __awaiter = (this && this.__awaiter) || function (thisArg, _arguments, P, generator) {
    function adopt(value) { return value instanceof P ? value : new P(function (resolve) { resolve(value); }); }
    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) : adopt(result.value).then(fulfilled, rejected); }
        step((generator = generator.apply(thisArg, _arguments || [])).next());
    });
};
/**
 * Offline MathCoach-API falls notwendig bereitstellen. Dabei wird das Dateisystem durch den
 * LocalStorage des Browsers implementiert - einige Features der IDE (beispielsweise
 * der Navigator) sind nicht verfügbar und führen keine Aktionen durch.
 *
 * **Hinweis**: Wenn die echte MathCoach-API der IDE verfügbar ist, hat der Aufruf
 * dieser Funktion keinen Seiteneffekt.
 *
 * @param contextFileExtension Datei-Erweiterung der Kontext-Datei
 *
 */
export function enableOfflineUsageIfNecessary(contextFileExtension = "dummy.json") {
    const fileIdentifier = (file) => `mock-file://${file.owner}@${file.part}/${file.path}`;
    const traceMethod = (method, args) => console.log(["[MC MOCK API]", " ", method, "(", (args ? args : [""]).join(","), ")"].join(""));
    class MockAPI {
        constructor() {
            this.ide = {
                getContextFile() {
                    return __awaiter(this, void 0, void 0, function* () {
                        traceMethod("MC.ide.getContextFile");
                        return {
                            owner: "jdoe",
                            path: `/file.${contextFileExtension}`,
                            part: "vfs"
                        };
                    });
                },
                getUserName() {
                    return __awaiter(this, void 0, void 0, function* () {
                        traceMethod("MC.ide.getUserName");
                        return "jdoe";
                    });
                },
                fs: {
                    readFile(file) {
                        return __awaiter(this, void 0, void 0, function* () {
                            traceMethod("MC.ide.fs.readFile", [JSON.stringify(file)]);
                            return localStorage.getItem(fileIdentifier(file)) || "";
                        });
                    },
                    writeFile(file, text) {
                        return __awaiter(this, void 0, void 0, function* () {
                            traceMethod("MC.ide.fs.writeFile", [JSON.stringify(file), JSON.stringify(`...${text.length} chars...`)]);
                            return localStorage.setItem(fileIdentifier(file), text);
                        });
                    }
                },
                navigator: {
                    navigateTo(link, forceOpen) {
                        return __awaiter(this, void 0, void 0, function* () {
                            traceMethod("MC.ide.navigator.navigateTo", [JSON.stringify(link), JSON.stringify(forceOpen ? true : false)]);
                        });
                    },
                    navigateToExercise(file, forceOpen) {
                        return __awaiter(this, void 0, void 0, function* () {
                            traceMethod("MC.ide.navigator.navigateToExercise", [JSON.stringify(file), JSON.stringify(forceOpen ? true : false)]);
                        });
                    }
                }
            };
        }
        isReady() {
            return __awaiter(this, void 0, void 0, function* () {
                traceMethod("MC.isReady()");
                return true;
            });
        }
    }
    if (typeof MC === "undefined") {
        console.warn("you are offline - offline api is used");
        window.MC = new MockAPI(); // fake the MathCoach-API
        return true;
    }
    else {
        return false;
    }
}
/**
 * Kontext-Datei auf Aufgaben-Datei abbilden.
 * Beispiel: "/path/to/myExercise.mcq.json" zu "/path/to/myExercise.groovy"
 */
export function contextFileToExerciseFile(contextFile) {
    if (contextFile) {
        if (!contextFile.owner || !(typeof contextFile.owner === "string") || !(contextFile.owner.trim() === "")) {
            throw new Error("Context file has no valid 'owner' property.");
        }
        if (!contextFile.part || !(typeof contextFile.part === "string")) {
            if (contextFile.part !== "vfs" && contextFile.part !== "www") {
                throw new Error("Context file has no valid 'part' property. Allowed values are 'vfs' and 'www'.");
            }
        }
        if (!contextFile.path || !(typeof contextFile.path === "string") || !(contextFile.owner.trim().startsWith("/"))) {
            throw new Error("Context file has no valid 'path' property.");
        }
    }
    else {
        throw new Error("No context file object given.");
    }
    let file = {
        part: contextFile.part,
        owner: contextFile.owner,
        path: contextFile.path.split(".")[0] + ".groovy"
    };
    return file;
}
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