import 'dart:async';
import 'dart:io';

import 'package:flutter/foundation.dart';
import 'package:fimber/fimber.dart';

import 'package:git_bindings/git_bindings.dart';

import 'package:gitjournal/core/note.dart';
import 'package:gitjournal/core/notes_folder.dart';
import 'package:gitjournal/settings.dart';

class NoteRepoResult {
  bool error;
  String noteFilePath;

  NoteRepoResult({
    @required this.error,
    this.noteFilePath,
  });
}

class GitNoteRepository {
  final String gitDirPath;
  final GitRepo _gitRepo;

  GitNoteRepository({
    @required this.gitDirPath,
  }) : _gitRepo = GitRepo(
          folderPath: gitDirPath,
          authorEmail: Settings.instance.gitAuthorEmail,
          authorName: Settings.instance.gitAuthor,
        );

  Future<NoteRepoResult> addNote(Note note) async {
    return _addNote(note, "Added Note");
  }

  Future<NoteRepoResult> _addNote(Note note, String commitMessage) async {
    await note.save();
    await _gitRepo.add(".");
    await _gitRepo.commit(
      message: commitMessage,
    );

    return NoteRepoResult(noteFilePath: note.filePath, error: false);
  }

  Future<NoteRepoResult> addFolder(NotesFolder folder) async {
    await _gitRepo.add(".");
    await _gitRepo.commit(
      message: "Created New Folder",
    );

    return NoteRepoResult(noteFilePath: folder.folderPath, error: false);
  }

  Future<NoteRepoResult> renameFolder(
    String oldFullPath,
    String newFullPath,
  ) async {
    // FIXME: This is a hacky way of adding the changes, ideally we should be calling rm + add or something
    await _gitRepo.add(".");
    await _gitRepo.commit(
      message: "Renamed Folder",
    );

    return NoteRepoResult(noteFilePath: newFullPath, error: false);
  }

  Future<NoteRepoResult> removeNote(String noteFilePath) async {
    var pathSpec = noteFilePath.replaceFirst(gitDirPath, "").substring(1);

    // We are not calling note.remove() as gitRm will also remove the file
    await _gitRepo.rm(pathSpec);
    await _gitRepo.commit(
      message: "Removed Note " + pathSpec,
    );

    return NoteRepoResult(noteFilePath: noteFilePath, error: false);
  }

  Future<NoteRepoResult> removeFolder(String folderPath) async {
    var pathSpec = folderPath.replaceFirst(gitDirPath, "").substring(1);

    await _gitRepo.rm(pathSpec);
    await _gitRepo.commit(
      message: "Removed Folder " + pathSpec,
    );

    await Directory(folderPath).delete(recursive: true);

    return NoteRepoResult(noteFilePath: folderPath, error: false);
  }

  Future<NoteRepoResult> resetLastCommit() async {
    await _gitRepo.resetLast();
    return NoteRepoResult(error: false);
  }

  Future<NoteRepoResult> updateNote(Note note) async {
    return _addNote(note, "Edited Note");
  }

  Future<void> sync() async {
    try {
      await _gitRepo.pull();
    } on GitException catch (ex) {
      Fimber.d(ex.toString());
    }

    try {
      await _gitRepo.push();
    } on GitException catch (ex) {
      Fimber.d(ex.toString());
      rethrow;
    }
  }
}

const ignoredMessages = [
  'connection timed out',
  'failed to resolve address for',
  'failed to connect to',
  'no address associated with hostname',
  'unauthorized',
  'invalid credentials',
  'failed to start ssh session',
  'failure while draining',
  'network is unreachable',
];

bool shouldLogGitException(GitException ex) {
  var msg = ex.cause.toLowerCase();
  for (var i = 0; i < ignoredMessages.length; i++) {
    if (msg.contains(ignoredMessages[i])) {
      return false;
    }
  }
  return true;
}