/**
 * @name Radarr - Trigger Manual Import
 * @description Safely trigger Radarr ManualImport for exactly one processed file.
 * @author FileFlows + Sascha
 * @revision 10
 * @output Import erfolgreich
 * @output Fehler
 * @param {string} URL Radarr root URL and port
 * @param {string} ApiKey Radarr API Key
 * @param {string} ImportPath Output path for import triggering
 * @param {bool} UseUnmappedPath Whether to Unmap the path
 * @param {bool} MoveMode Import mode: true=move, false=copy
 * @param {int} TimeOut Timeout in seconds (max 3600)
 */
import { Radarr } from 'Shared/Radarr';


function Script(URL, ApiKey, ImportPath, UseUnmappedPath, MoveMode, TimeOut) {
    URL = (URL || Variables['Radarr.Url'] || Variables['Radarr.URI']).replace(/\/+$/g, '');
    ApiKey = ApiKey || Variables['Radarr.ApiKey'];
    const currentFile = Variables['file.FullName'] || Variables.file?.FullName || '';
    ImportPath = ImportPath || currentFile;
    TimeOut = TimeOut ? Math.min(TimeOut, 3600) * 1000 : 60000;  // ms
    ImportPath = UseUnmappedPath ? Flow.UnMapPath(ImportPath) : ImportPath;
    const exactImportPath = UseUnmappedPath ? Flow.UnMapPath(currentFile) : currentFile;
    const importMode = MoveMode ? 'move' : 'copy';

    if (!exactImportPath) {
        Logger.ELog('No exact current file path available; refusing broad Radarr scan.');
        return -1;
    }

    // ── SKIP-GUARD: Nur API-Call machen, wenn der aktuelle ImportPath
    //    mit dem konfigurierten Pfad uebereinstimmt. Sonst sofort OK.
    //    Das verhindert 3 unnoetige API-Calls pro Datei (4 Arr-Instanzen).
    if (ImportPath && ImportPath.indexOf(URL) === -1) {
        // ImportPath ist ein Dateipfad, URL ist die Radarr-Instanz-URL.
        // Pruefe ob der ImportPath unter dem erwarteten Verzeichnis liegt.
        // Die Flow-Konfiguration setzt ImportPath z.B. auf /tdarr/converted/video4k/
        // oder /tdarr/converted/video/. Wenn der aktuelle file.FullName nicht
        // darunter liegt, sind wir nicht zustaendig.
        if (currentFile && ImportPath && currentFile.indexOf(ImportPath) === -1) {
            Logger.ILog(`Skip: current file '${currentFile}' not under ImportPath '${ImportPath}' - not responsible`);
            return 1;
        }
    }

    const radarr = new Radarr(URL, ApiKey);

    /*── movieId detection ──────────────────────────────────*/
    const searchPattern = Variables.file.Orig.FileNameNoExtension;
    let movieId = Variables['Radarr.movieId']
        ?? findMovieIdFromQueue(searchPattern, radarr)
        ?? findMovieIdFromGrabHistory(searchPattern, radarr)
        ?? parseMovie(searchPattern, radarr)
        ?? null;

    Logger.ILog(`Radarr URL: ${URL}`);
    Logger.ILog(`Triggering Path: ${exactImportPath}`);
    Logger.ILog(`Import Mode: ${importMode}`);
    Logger.ILog(movieId ? `movieId: ${movieId} → ManualImport` : 'No unambiguous movieId → fail closed');

    if (!movieId) {
        Logger.ELog(`Unable to identify '${searchPattern}' uniquely; file remains for manual recovery.`);
        return -1;
    }

    return manualImportWorkflow(radarr, exactImportPath, importMode, movieId, TimeOut);

}

/*───────────────────────────── ManualImport ─────────────────────────────*/

/**
 * @description Perform ManualImport flow (when movieId is present) and wait until it finishes (or times out).
 * @param {Radarr}  radarr - Radarr API instance
 * @param {string}  importPath - Folder/File path given to movie import
 * @param {string}  mode - 'move' or 'copy'
 * @param {number}  movieId - Radarr movieId to attach to the import
 * @param {number}  timeout - Timeout in milliseconds
 * @returns {number} 1 on success, −1 on failure
 */
function manualImportWorkflow(radarr, importPath, mode, movieId, timeout) {
    const candidates = getManualImportCandidates(radarr, importPath);
    if (!candidates.length) {
        Logger.WLog('No candidates returned by fetching ManualImport');
        return -1;
    }

    /* accept only the candidate for the exact processed file */
    const exactPath = normalizeImportPath(importPath);
    const matchingCandidates = candidates.filter(c =>
        normalizeImportPath(c.path || '') === exactPath
    );
    const cand = matchingCandidates.find(c => c.quality && c.quality.quality);
    if (!cand) {
        Logger.WLog(`No ManualImport candidate matched exact path '${importPath}'.`);
        return -1;
    }

    const fileObj = buildManualImportFile(cand, movieId, importPath);
    const cmdBody = { name: 'ManualImport', files: [fileObj], importMode: mode };
    const cmdId = sendManualImportCommand(radarr, cmdBody);
    if (cmdId === null) {
        Logger.WLog('Failed sending ManualImport command');
        return -1;
    }

    return waitForCommand(radarr, cmdId, timeout);
}

/**
 * @description Retrieve candidate files from Radarr’s **Manual Import** analyser.
 * @param {Radarr} radarr – Radarr API instance
 * @param {string} importPath – Folder/File path to inspect
 * @returns {Array<object>} Array of candidate objects (empty array on error)
 */
function getManualImportCandidates(radarr, importPath) {
    try {
        const query = buildQueryParams({ folder: importPath });
        const resp = radarr.fetchJson('manualimport', query) || [];
        Logger.ILog(`ManualImport returned ${resp.length} candidate(s).`);
        return resp;
    } catch (e) {
        Logger.ELog(`Fetch candidates from ManualImport failed: ${e.message}`);
        return [];
    }
}

/**
 * @description Build the minimal file-object required by Radarr's ManualImport POST body.
 * @param {object} src – Single candidate object returned by ManualImport
 * @param {number} movieId – Radarr movieId to which the file is linked
 * @returns {object} File descriptor for ManualImport
 */
function buildManualImportFile(src, movieId, importPath) {
    const path =  src.path || importPath
    const fallbackFolder = System.IO.Path.GetFileName(System.IO.Path.GetDirectoryName(path)) ?? Variables.folder.Name;

    return {
        path: path,
        folderName: src.folderName || src.name || fallbackFolder,
        movieId: movieId,
        releaseGroup: src.releaseGroup || 'Radarr',
        quality: src.quality,
        languages: src.languages || [ { id:0, name:'Unknown' } ],
        indexerFlags: src.indexerFlags ?? 0
    };
}

/**
 * @description Send the **ManualImport** command to Radarr and return command-id
 * @param {Radarr} radarr – Radarr API instance
 * @param {object} cmdBody – Complete payload for ManualImport command
 * @returns {number|null} Command id on success, null on failure
 */
function sendManualImportCommand(radarr, cmdBody) {
    try {
        const resp = radarr.sendCommand('ManualImport', cmdBody);
        const cmdId = resp?.id;
        Logger.ILog(cmdId ? `ManualImport queued (cmdId=${cmdId}).` : 'ManualImport failed.');
        return cmdId ?? null;
    } catch (e) {
        Logger.ELog(`Send command ManualImport failed: ${e.message}`);
        return null;
    }
}

/*────────────────────────────── helpers ──────────────────────────────────*/

/**
 * @description Poll Radarr until the command id completes or timeout is reached.
 * @param {Radarr} radarr - Radarr API instance
 * @param {number}  cmdId - Command id returned by sendCommand
 * @param {number}  timeoutMs - Maximum time to wait in milliseconds
 * @returns {number} 1 on success, −1 on timeout
 */
function waitForCommand(radarr, cmdId, timeoutMs) {
    const ok = radarr.waitForCompletion(cmdId, timeoutMs);
    if (ok) {
        Logger.DLog(`Command ${cmdId} completed.`);
        Logger.ILog('Import completed successfully');
        return 1;
    }
    Logger.WLog('Import timed out or failed.');
    return -1;
}

/**
 * Resolve the movie from Radarr's active download queue.  The queue title is
 * the original release name and therefore survives FileFlows renaming.
 * Only one exact normalized match is accepted.
 */
function findMovieIdFromQueue(searchPattern, radarr) {
    if (!searchPattern) {
        return null;
    }

    try {
        const query = buildQueryParams({
            page: 1,
            pageSize: 200,
            includeUnknownMovieItems: true
        });
        const response = radarr.fetchJson('queue', query) || {};
        const records = Array.isArray(response) ? response : (response.records || []);
        const wanted = normalizeReleaseTitle(searchPattern);
        const matches = records.filter(item =>
            item?.movieId && normalizeReleaseTitle(item.title || '') === wanted
        );

        if (matches.length === 1) {
            Logger.ILog(`Matched Radarr queue movieId ${matches[0].movieId}.`);
            return matches[0].movieId;
        }
        if (matches.length > 1) {
            Logger.WLog(`Ambiguous Radarr queue match (${matches.length} records).`);
        }
        return null;
    } catch (e) {
        Logger.ELog(`Error fetching Radarr queue: ${e.message}`);
        return null;
    }
}

/**
 * Resolve a release that has already left the active queue from Radarr's grab
 * history. Repeated grabs are accepted only when every exact-title match points
 * to the same movie.
 */
function findMovieIdFromGrabHistory(searchPattern, radarr) {
    if (!searchPattern) {
        return null;
    }

    try {
        const query = buildQueryParams({
            page: 1,
            pageSize: 250,
            eventType: 1, // Radarr HistoryEventType.Grabbed
            sortKey: 'date',
            sortDirection: 'descending'
        });
        const response = radarr.fetchJson('history', query) || {};
        const records = Array.isArray(response) ? response : (response.records || []);
        const wanted = normalizeReleaseTitle(searchPattern);
        const movieIds = records
            .filter(item =>
                item?.movieId && normalizeReleaseTitle(item.sourceTitle || '') === wanted
            )
            .map(item => item.movieId)
            .filter((id, index, values) => values.indexOf(id) === index);

        if (movieIds.length === 1) {
            Logger.ILog(`Matched Radarr grab history movieId ${movieIds[0]}.`);
            return movieIds[0];
        }
        if (movieIds.length > 1) {
            Logger.WLog(`Ambiguous Radarr grab history match (${movieIds.length} movies).`);
        }
        return null;
    } catch (e) {
        Logger.ELog(`Error fetching Radarr history: ${e.message}`);
        return null;
    }
}

function normalizeReleaseTitle(value) {
    return (value || '').toLowerCase().replace(/[^a-z0-9]+/g, '');
}

function normalizeImportPath(value) {
    return (value || '').replace(/\\/g, '/').replace(/\/+$/g, '');
}

/**
 * @description Parse the movie name using Radarr parsing based on the search pattern.
 * @param {string} searchPattern - The search string (file or folder name)
 * @param {Object} radarr - Radarr API instance
 * @returns {Object|null} Parsed movie object, or null if none.
 */
function parseMovie(searchPattern, radarr) {
    let endpoint = 'parse'
    let sp = null;

    Logger.ILog(`Trying to Parse Movie name using Radarr Parsing`);

    if (!searchPattern) {
        Logger.WLog('No pattern passed in to find movie');
        return null;
    } else {
        sp = searchPattern.toLowerCase();
    }

    try {
        const queryParams = buildQueryParams({ title: sp });
        const item = radarr.fetchJson(endpoint, queryParams);

        if (item?.movie?.title) {
            Logger.ILog(`Found Movie: ${item.movie.title}`);
            return item.movie.id;
        }
        Logger.WLog(`The ${endpoint} endpoint did not recognise this title.`);
        return null;
    } catch (e) {
        Logger.ELog(`Error fetching Radarr ${endpoint} endpoint: ${e.message}`);
        return null;
    }
}

/**
 * @description Constructs a query string from the given parameters
 * @param {Object} params - Key-value pairs to be converted into a query string
 * @returns {string} The constructed query string
 */
function buildQueryParams(obj) {
    return Object.entries(obj)
        .map(([k, v]) => `${encodeURIComponent(k)}=${encodeURIComponent(v)}`)
        .join('&');
}