initial commit

scripts/models/progress.gd

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+class_name Progress
+extends Resource
+
+@export var deck_id: String = ""
+
+@export var total_sessions: int = 0
+@export var total_cards_studied: int = 0
+@export var total_correct: int = 0
+@export var total_incorrect: int = 0
+@export var current_streak: int = 0
+@export var best_streak: int = 0
+@export var last_session_at: String = ""
+
+@export var card_stats: Dictionary = {}
+
+func to_dict() -> Dictionary:
+	return {
+		"deck_id": deck_id,
+		"stats": {
+			"total_sessions": total_sessions,
+			"total_cards_studied": total_cards_studied,
+			"total_correct": total_correct,
+			"total_incorrect": total_incorrect,
+			"current_streak": current_streak,
+			"best_streak": best_streak,
+			"last_session_at": last_session_at
+		},
+		"card_stats": card_stats.duplicate()
+	}
+
+func from_dict(data: Dictionary) -> void:
+	deck_id = data.get("deck_id", "")
+
+	var stats = data.get("stats", {})
+	total_sessions = stats.get("total_sessions", 0)
+	total_cards_studied = stats.get("total_cards_studied", 0)
+	total_correct = stats.get("total_correct", 0)
+	total_incorrect = stats.get("total_incorrect", 0)
+	current_streak = stats.get("current_streak", 0)
+	best_streak = stats.get("best_streak", 0)
+	last_session_at = stats.get("last_session_at", "")
+
+	card_stats = data.get("card_stats", {}).duplicate()
+
+func record_answer(card_id: String, is_correct: bool) -> void:
+	if not card_stats.has(card_id):
+		card_stats[card_id] = {
+			"correct": 0,
+			"incorrect": 0,
+			"last_seen_at": "",
+			"next_review_at": "",
+			"ease_factor": 2.5
+		}
+
+	if is_correct:
+		total_correct += 1
+		card_stats[card_id]["correct"] += 1
+		current_streak += 1
+		if current_streak > best_streak:
+			best_streak = current_streak
+	else:
+		total_incorrect += 1
+		card_stats[card_id]["incorrect"] += 1
+		current_streak = 0
+
+	total_cards_studied += 1
+	var now = Time.get_datetime_string_from_system(true, true) + "Z"
+	card_stats[card_id]["last_seen_at"] = now
+	last_session_at = now
+
+	_update_next_review(card_id, is_correct)
+
+func get_accuracy() -> float:
+	var total = total_correct + total_incorrect
+	if total == 0:
+		return 0.0
+	return (float(total_correct) / float(total)) * 100.0
+
+func get_card_stats(card_id: String) -> Dictionary:
+	return card_stats.get(card_id, {
+		"correct": 0,
+		"incorrect": 0,
+		"last_seen_at": "",
+		"next_review_at": "",
+		"ease_factor": 2.5
+	})
+
+func _update_next_review(card_id: String, is_correct: bool) -> void:
+	var stats = card_stats[card_id]
+	var ease_factor: float = stats.get("ease_factor", 2.5)
+
+	if is_correct:
+		ease_factor = min(ease_factor + 0.1, 3.0)
+	else:
+		ease_factor = max(ease_factor - 0.2, 1.3)
+
+	stats["ease_factor"] = ease_factor
+
+	var review_interval_days: int = 1
+	if is_correct:
+		var correct_count = stats.get("correct", 0)
+		review_interval_days = int(correct_count * ease_factor)
+	else:
+		review_interval_days = 1
+
+	var now_unix = Time.get_unix_time_from_system()
+	#var now_unix = Time.get_time_dict_from_unix_time(Time.get_unix_time_from_system())
+	var next_review_unix = now_unix + (review_interval_days * 86400)  # 86400 seconds in a day
+	var next_review_dict = Time.get_datetime_dict_from_unix_time(int(next_review_unix))
+	stats["next_review_at"] = "%04d-%02d-%02dT%02d:%02d:%02dZ" % [
+		next_review_dict.year, next_review_dict.month, next_review_dict.day,
+		next_review_dict.hour, next_review_dict.minute, next_review_dict.second
+	]
+
+func start_session() -> void:
+	total_sessions += 1