import 'package:cloud_firestore/cloud_firestore.dart';
import 'package:firebase_auth/firebase_auth.dart';
import 'package:physigo/exercises/exercises_validation/models/exercise.dart';

class ExercisesService {
  static final _db = FirebaseFirestore.instance;
  static final _exercises = _db.collection("Exercises");
  static final _exercisesScores = _db.collection("ExercisesScores");

  static Future<List<Exercise>> getExercises() async {
    final exercisesSnapshot = await _exercises.get();
    if (exercisesSnapshot.docs.isEmpty) {
      return [];
    }
    final exercises = exercisesSnapshot.docs.map((e) => Exercise.fromMap(e.id, e.data())).toList();
    return exercises;
  }

  static Future<void> addScoreToExercise(Exercise exercise, int score) async {
    final userId = FirebaseAuth.instance.currentUser!.uid;
    final exerciseScoreSnapshot =
        await _exercisesScores.where("user", isEqualTo: userId).where("exercise", isEqualTo: exercise.id).get();
    if (exerciseScoreSnapshot.docs.isEmpty) {
      await _exercisesScores.add({"score": score, "user": userId, "exercise": exercise.id});
    } else {
      final exerciseScore = exerciseScoreSnapshot.docs.first;
      _exercisesScores.doc(exerciseScore.id).update({"score": exerciseScore.get("score") + score});
    }
    final user = await _db.collection("profileInfo").doc(FirebaseAuth.instance.currentUser?.uid).get();
    _db
        .collection("profileInfo")
        .doc(FirebaseAuth.instance.currentUser?.uid)
        .update({"total_points": user.get("total_points") + score});
  }
}