const BaseModel = require("lib/BaseModel.js");
const Note = require("lib/models/Note.js");

class Alarm extends BaseModel {
	static tableName() {
		return "alarms";
	}

	static modelType() {
		return BaseModel.TYPE_ALARM;
	}

	static byNoteId(noteId) {
		return this.modelSelectOne("SELECT * FROM alarms WHERE note_id = ?", [noteId]);
	}

	static async deleteExpiredAlarms() {
		return this.db().exec("DELETE FROM alarms WHERE trigger_time <= ?", [Date.now()]);
	}

	static async alarmIdsWithoutNotes() {
		// https://stackoverflow.com/a/4967229/561309
		const alarms = await this.db().selectAll("SELECT alarms.id FROM alarms LEFT JOIN notes ON alarms.note_id = notes.id WHERE notes.id IS NULL");
		return alarms.map(a => {
			return a.id;
		});
	}

	static async makeNotification(alarm, note = null) {
		if (!note) note = await Note.load(alarm.note_id);

		const output = {
			id: alarm.id,
			date: new Date(note.todo_due),
			title: note.title.substr(0, 128),
		};

		if (note.body) output.body = note.body.substr(0, 512);

		return output;
	}

	static async allDue() {
		return this.modelSelectAll("SELECT * FROM alarms WHERE trigger_time >= ?", [Date.now()]);
	}
}

module.exports = Alarm;