import 'dart:convert';
import 'dart:developer' as developer;
import 'package:get/get.dart';
import 'package:onufitness/constants/api_endpoints.dart';
import 'package:onufitness/screens/echoboard/controllers/echoboard_controller.dart';
import 'package:onufitness/screens/echoboard/models/parent_comments_response_model.dart';
import 'package:onufitness/screens/echoboard/models/post_model.dart';
import 'package:onufitness/services/api_services/base_api_services.dart';
import 'package:onufitness/utils/custom_sneakbar.dart';

class LikeCommentController extends GetxController {
  RxInt commentCurrentPage = 1.obs;
  final int commentPageSize = 10;
  final hasMoreComments = true.obs;
  final isCommentPaginationLoading = false.obs;
  RxString postId = "".obs;
  final commentsResponseModel = ParentCommentResponseModel().obs;
  RxBool isCommentsFetchLoading = false.obs;
  RxBool isCommentSubmitting = false.obs;

  final Rx<CommentItem?> replyingTo = Rx<CommentItem?>(null);
  final Rx<CommentItem?> parentOfReply = Rx<CommentItem?>(null);
  final RxSet<int> loadingSubCommentIds = RxSet<int>();

  void resetReplyState() {
    replyingTo.value = null;
    parentOfReply.value = null;
  }

  void startReply(CommentItem comment, CommentItem? parentComment) {
    replyingTo.value = comment;
    parentOfReply.value = parentComment;
  }

  Future<bool> fetchcomments({bool refresh = false}) async {
    if (refresh) {
      commentCurrentPage.value = 1;
      hasMoreComments.value = true;
      commentsResponseModel.value = ParentCommentResponseModel();
    }

    isCommentPaginationLoading(true);
    if (refresh) isCommentsFetchLoading(true);

    try {
      final response = await ApiBase.getRequest(
        extendedURL:
            "${ApiUrl.getParentCommentList}/${postId.value}?pageNumber=${commentCurrentPage.value}&pagesize=$commentPageSize",
      );
      developer.log("Fetch comments status: ${response.statusCode}");

      if (response.statusCode == 200 || response.statusCode == 201) {
        final newData = parentCommentResponseModelFromJson(response.body);

        if (newData.isSuccess == true && newData.data != null) {
          if (refresh) {
            commentsResponseModel.value = newData;
          } else {
            final currentItems = commentsResponseModel.value.data?.items ?? [];
            final newItems = newData.data?.items ?? [];
            commentsResponseModel.value.data?.items = [
              ...currentItems,
              ...newItems,
            ];
            commentsResponseModel.value.data?.totalCount =
                newData.data?.totalCount;
            commentsResponseModel.refresh();
          }

          final fetchedItemsCount =
              commentsResponseModel.value.data?.items?.length ?? 0;
          final totalItemsCount = newData.data?.totalCount ?? 0;

          hasMoreComments.value = fetchedItemsCount < totalItemsCount;

          if (newData.data?.items?.isNotEmpty == true) {
            commentCurrentPage.value++;
          } else {
            hasMoreComments.value = false;
          }

          return true;
        } else {
          customSnackbar(
            title: "Error",
            message: newData.message ?? "Failed to fetch Comments",
            duration: 1,
          );
          return false;
        }
      } else {
        customSnackbar(
          title: "Error",
          message: "Failed to fetch Comments",
          duration: 1,
        );
        return false;
      }
    } catch (e) {
      developer.log("Error fetching comments: ${e.toString()}");
      customSnackbar(
        title: "Error",
        message: "Failed to load comments. Please try again.",
        duration: 1,
      );
      return false;
    } finally {
      isCommentsFetchLoading(false);
      isCommentPaginationLoading(false);
    }
  }

  Future<bool> submitComment({
    required String postId,
    required String commentText,
    int? parentCommentId,
  }) async {
    isCommentSubmitting(true);
    try {
      final isReply = parentCommentId != null;
      final Map<String, dynamic> requestBody =
          isReply
              ? {
                "postID": postId,
                "parentCommentID": parentCommentId,
                "commentText": commentText,
              }
              : {
                "postID": postId,
                "parentCommentID": 0,
                "commentText": commentText,
              };

      developer.log("Submitting comment: $requestBody");
      final response = await ApiBase.postRequest(
        extendedURL: ApiUrl.addComment,
        body: requestBody,
      );

      developer.log("Comment submission status: ${response.body}");
      if (response.statusCode == 200 || response.statusCode == 201) {
        final responseData = jsonDecode(response.body);
        return responseData['isSuccess'] == true;
      }
      return false;
    } catch (e) {
      developer.log("Error submitting comment: ${e.toString()}");
      return false;
    } finally {
      isCommentSubmitting(false);
    }
  }

  Future<bool> fetchSubComments(int parentCommentId) async {
    loadingSubCommentIds.add(parentCommentId);
    try {
      final response = await ApiBase.getRequest(
        extendedURL:
            "${ApiUrl.getSubCommentList}/$parentCommentId?pageNumber=1&pagesize=1000",
      );

      developer.log("Fetch subcomments status: ${response.statusCode}");

      if (response.statusCode == 200 || response.statusCode == 201) {
        final responseData = jsonDecode(response.body);

        if (responseData['isSuccess'] == true && responseData['data'] != null) {
          final items = commentsResponseModel.value.data?.items;

          if (items != null) {
            for (int i = 0; i < items.length; i++) {
              if (items[i].commentId == parentCommentId) {
                final subComments = List<CommentItem>.from(
                  responseData['data']['items'].map(
                    (x) => CommentItem.fromJson(x),
                  ),
                );

                items[i].subComments = subComments;
                items[i].totalSubCommentCount =
                    responseData['data']['totalCount'];
                commentsResponseModel.refresh();
                return true;
              }
            }
          }
        }
      }
      return false;
    } catch (e) {
      developer.log("Error fetching subcomments: ${e.toString()}");
      return false;
    } finally {
      loadingSubCommentIds.remove(parentCommentId);
    }
  }

  //......................................................................
  // Function to submit post reaction
  //......................................................................
  Future<bool> submitPostReaction({
    required String postId,
    required int reactionTypeId,
    bool isDeleteReaction = false,
  }) async {
    try {
      final response = await ApiBase.postRequest(
        extendedURL:
            "${ApiUrl.createUpdatePostReaction}?PostID=$postId&ReactionTypeID=$reactionTypeId&IsDeleteReaction=$isDeleteReaction",
        body: {},
      );

      developer.log("Reaction submission status: ${response.statusCode}");
      developer.log("Reaction API response  body : ${response.body}");
      if (response.statusCode == 200 || response.statusCode == 201) {
        updatePostReaction(postId.toString(), reactionTypeId, isDeleteReaction);

        final responseData = jsonDecode(response.body);

        if (responseData['isSuccess'] == true) {
          return true;
        } else {
          return false;
        }
      } else {
        return false;
      }
    } catch (e) {
      developer.log("Error submitting reaction: ${e.toString()}");
      customSnackbar(
        title: "Error",
        message: "Something went wrong. Please try again.",
        duration: 1,
      );
      return false;
    }
  }

  //......................................................................
  //..........update Post Reaction.........................................
  //......................................................................

  void updatePostReaction(String postId, int reactionTypeId, bool isRemove) {
    final echoBoardController = Get.find<EchoBoardController>();

    final int index = echoBoardController.posts.indexWhere(
      (post) => post.postId.toString() == postId,
    );

    if (index == -1) return;

    final oldPost = echoBoardController.posts[index];
    final currentReactions = oldPost.totalPostReactions ?? 0;
    final isAlreadyLiked = oldPost.postReactionTypeId != null;

    int updatedCount = currentReactions;

    if (isRemove && isAlreadyLiked) {
      updatedCount = (currentReactions - 1).clamp(0, double.infinity).toInt();
    } else if (!isRemove && !isAlreadyLiked) {
      updatedCount = currentReactions + 1;
    }

    final updatedPost = SocialPostItem(
      postId: oldPost.postId,
      userId: oldPost.userId,
      content: oldPost.content,
      mediaFiles: oldPost.mediaFiles,
      profilePicture: oldPost.profilePicture,
      fullName: oldPost.fullName,
      userTypeName: oldPost.userTypeName,
      createdAt: oldPost.createdAt,
      totalPostComments: oldPost.totalPostComments,
      postReactionTypeId: isRemove ? null : reactionTypeId,
      totalPostReactions: updatedCount,
      poll: oldPost.poll,
    );

    echoBoardController.posts[index] = updatedPost;
    echoBoardController.update();
    echoBoardController.posts.refresh();
  }
}