Encrypted messaging app
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  1. import 'dart:async';
  2. import 'package:flutter/widgets.dart';
  3. import 'package:path/path.dart';
  4. import 'package:sqflite/sqflite.dart';
  5. Future<void> deleteDb() async {
  6. final path = join(await getDatabasesPath(), 'capsule.db');
  7. deleteDatabase(path);
  8. }
  9. Future<Database> getDatabaseConnection() async {
  10. WidgetsFlutterBinding.ensureInitialized();
  11. final path = join(await getDatabasesPath(), 'capsule.db');
  12. final database = openDatabase(
  13. path,
  14. onCreate: (db, version) async {
  15. await db.execute(
  16. '''
  17. CREATE TABLE IF NOT EXISTS friends(
  18. id TEXT PRIMARY KEY,
  19. user_id TEXT,
  20. username TEXT,
  21. friend_id TEXT,
  22. symmetric_key TEXT,
  23. asymmetric_public_key TEXT,
  24. accepted_at TEXT
  25. );
  26. ''');
  27. await db.execute(
  28. '''
  29. CREATE TABLE IF NOT EXISTS conversations(
  30. id TEXT PRIMARY KEY,
  31. user_id TEXT,
  32. symmetric_key TEXT,
  33. admin INTEGER,
  34. name TEXT,
  35. two_user INTEGER,
  36. status INTEGER,
  37. is_read INTEGER,
  38. file TEXT,
  39. message_expiry TEXT,
  40. admin_add_members INTEGER,
  41. admin_edit_info INTEGER,
  42. admin_send_messages INTEGER
  43. );
  44. ''');
  45. await db.execute(
  46. '''
  47. CREATE TABLE IF NOT EXISTS conversation_users(
  48. id TEXT PRIMARY KEY,
  49. user_id TEXT,
  50. conversation_id TEXT,
  51. username TEXT,
  52. association_key TEXT,
  53. admin INTEGER,
  54. asymmetric_public_key TEXT
  55. );
  56. ''');
  57. await db.execute(
  58. '''
  59. CREATE TABLE IF NOT EXISTS messages(
  60. id TEXT PRIMARY KEY,
  61. symmetric_key TEXT,
  62. user_symmetric_key TEXT,
  63. data TEXT,
  64. file TEXT,
  65. sender_id TEXT,
  66. sender_username TEXT,
  67. association_key TEXT,
  68. created_at TEXT,
  69. failed_to_send INTEGER
  70. );
  71. ''');
  72. },
  73. version: 2,
  74. );
  75. return database;
  76. }