const log = require('./log');
const noteService = require('./notes');
const sql = require('./sql');
const utils = require('./utils');
const dateUtils = require('./date_utils');
const attributeService = require('./attributes');
const dateNoteService = require('./date_notes');
const treeService = require('./tree');
const config = require('./config');
const repository = require('./repository');
const axios = require('axios');
const cloningService = require('./cloning');
const messagingService = require('./messaging');

/**
 * @constructor
 * @hideconstructor
 */
function BackendScriptApi(startNote, currentNote, originEntity) {
    /** @property {Note} note where script started executing */
    this.startNote = startNote;
    /** @property {Note} note where script is currently executing */
    this.currentNote = currentNote;
    /** @property {Entity} entity whose event triggered this executions */
    this.originEntity = originEntity;

    this.axios = axios;

    this.utils = {
        unescapeHtml: utils.unescapeHtml,
        isoDateTimeStr: dateUtils.dateStr,
        isoDateStr: date => dateUtils.dateStr(date).substr(0, 10)
    };

    /**
     * Instance name identifies particular Trilium instance. It can be useful for scripts
     * if some action needs to happen on only one specific instance.
     *
     * @returns {string|null}
     */
    this.getInstanceName = () => config.General ? config.General.instanceName : null;

    /**
     * @method
     * @param {string} noteId
     * @returns {Promise<Note|null>}
     */
    this.getNote = repository.getNote;

    /**
     * @method
     * @param {string} branchId
     * @returns {Promise<Branch|null>}
     */
    this.getBranch = repository.getBranch;

    /**
     * @method
     * @param {string} attributeId
     * @returns {Promise<Attribute|null>}
     */
    this.getAttribute = repository.getAttribute;

    /**
     * @method
     * @param {string} imageId
     * @returns {Promise<Image|null>}
     */
    this.getImage = repository.getImage;

    /**
     * Retrieves first entity from the SQL's result set.
     *
     * @method
     * @param {string} SQL query
     * @param {Array.<*>} array of params
     * @returns {Promise<Entity|null>}
     */
    this.getEntity = repository.getEntity;

    /**
     * @method
     * @param {string} SQL query
     * @param {Array.<*>} array of params
     * @returns {Promise<Array.<Entity>>}
     */
    this.getEntities = repository.getEntities;

    /**
     * Retrieves notes with given label name & value
     *
     * @method
     * @param {string} name - attribute name
     * @param {string} [value] - attribute value
     * @returns {Promise<Array.<Note>>}
     */
    this.getNotesWithLabel = attributeService.getNotesWithLabel;

    /**
     * Retrieves first note with given label name & value
     *
     * @method
     * @param {string} name - attribute name
     * @param {string} [value] - attribute value
     * @returns {Promise<Note|null>}
     */
    this.getNoteWithLabel = attributeService.getNoteWithLabel;

    /**
     * If there's no branch between note and parent note, create one. Otherwise do nothing.
     *
     * @method
     * @param {string} noteId
     * @param {string} parentNoteId
     * @param {string} prefix - if branch will be create between note and parent note, set this prefix
     * @returns {Promise<void>}
     */
    this.ensureNoteIsPresentInParent = cloningService.ensureNoteIsPresentInParent;

    /**
     * If there's a branch between note and parent note, remove it. Otherwise do nothing.
     *
     * @method
     * @param {string} noteId
     * @param {string} parentNoteId
     * @returns {Promise<void>}
     */
    this.ensureNoteIsAbsentFromParent = cloningService.ensureNoteIsAbsentFromParent;

    /**
     * Based on the value, either create or remove branch between note and parent note.
     *
     * @method
     * @param {boolean} present - true if we want the branch to exist, false if we want it gone
     * @param {string} noteId
     * @param {string} parentNoteId
     * @param {string} prefix - if branch will be create between note and parent note, set this prefix
     * @returns {Promise<void>}
     */
    this.toggleNoteInParent = cloningService.toggleNoteInParent;

    /**
     * @method
     *
     * @param {string} parentNoteId - create new note under this parent
     * @param {string} title
     * @param {string} [content]
     * @param {object} [extraOptions]
     * @returns {Promise<Object>} object contains attributes "note" and "branch" which contain newly created entities
     */
    this.createNote = noteService.createNote;

    /**
     * Log given message to trilium logs.
     *
     * @param message
     */
    this.log = message => log.info(`Script "${currentNote.title}" (${currentNote.noteId}): ${message}`);

    /**
     * Returns root note of the calendar.
     *
     * @method
     * @returns {Promise<Note|null>}
     */
    this.getRootCalendarNote = dateNoteService.getRootCalendarNote;

    /**
     * Returns day note for given date (YYYY-MM-DD format). If such note doesn't exist, it is created.
     *
     * @method
     * @param {string} date
     * @returns {Promise<Note|null>}
     */
    this.getDateNote = dateNoteService.getDateNote;

    /**
     * @method
     * @param {string} parentNoteId - this note's child notes will be sorted
     * @returns Promise<void>
     */
    this.sortNotesAlphabetically = treeService.sortNotesAlphabetically;

    /**
     * This method finds note by its noteId and prefix and either sets it to the given parentNoteId
     * or removes the branch (if parentNoteId is not given).
     *
     * This method looks similar to toggleNoteInParent() but differs because we're looking up branch by prefix.
     *
     * @method
     * @param {string} noteId
     * @param {string} prefix
     * @param {string} [parentNoteId]
     */
    this.setNoteToParent = treeService.setNoteToParent;

    /**
     * This functions wraps code which is supposed to be running in transaction. If transaction already
     * exists, then we'll use that transaction.
     *
     * This method is required only when script has label manualTransactionHandling, all other scripts are
     * transactional by default.
     *
     * @method
     * @param {function} func
     * @returns {Promise<?>} result of func callback
     */
    this.transactional = sql.transactional;

    /**
     * Trigger tree refresh in all connected clients. This is required when some tree change happens in
     * the backend.
     *
     * @returns {Promise<void>}
     */
    this.refreshTree = () => messagingService.sendMessageToAllClients({ type: 'refresh-tree' });
}

module.exports = BackendScriptApi;