import Foundation
import SwiftData

@Observable
@MainActor
final class DiaryViewModel {
	var error: Error?

	private let summarizationService = SummarizationService()

	var isSummarizing: Bool {
		summarizationService.isSummarizing
	}

	func generateSummary(for entry: DiaryEntry) async {
		do {
			let transcript = entry.combinedTranscript
			let date = entry.date
			let summary = try await summarizationService.generateSummary(transcript: transcript, date: date)
			entry.summary = summary
			entry.isSummaryGenerated = true
			entry.updatedAt = .now
		} catch {
			self.error = error
		}
	}

	func deleteEntry(_ entry: DiaryEntry, context: ModelContext) {
		// Delete audio files
		for memo in entry.allMemos {
			try? FileManager.default.removeItem(at: memo.audioURL)
		}
		context.delete(entry)
	}

	func deleteMemo(_ memo: VoiceMemo, from entry: DiaryEntry, context: ModelContext) {
		try? FileManager.default.removeItem(at: memo.audioURL)
		entry.memos?.removeAll { $0.persistentModelID == memo.persistentModelID }
		context.delete(memo)
		entry.updatedAt = .now
	}
}