import { API_PATHS } from "@/api/api-paths";
import { ApiError, mapHttpStatusToMessage } from "@/api/api-error";
import { apiGet, apiPost, apiRequestRaw } from "@/api/api";
import { handleApiResponse } from "@/api/handle-api-response";
import {
  BoardPatchConflictError,
  BoardPatchValidationError,
} from "@/domain/work-orders/errors/board-patch-errors";
import {
  buildCompletionDocFormData,
  buildMediaFormData,
  mapBoardDetailComment,
  mapBoardDetailMediaItem,
  mapCompletion,
  type UploadableMediaCategory,
} from "@/domain/work-orders/mappers/work-order-board-detail-mapper";
import type {
  WorkOrderBoardCompletion,
  WorkOrderBoardMediaItem,
} from "@/domain/work-orders/types/work-order-board-detail";
import type { WorkOrderComment } from "@/domain/work-orders/types/work-order";

export interface CreateWorkOrderCommentPayload {
  text: string;
  mentions?: string[];
}

async function readResponseJson(response: Response): Promise<unknown> {
  try {
    return await response.json();
  } catch {
    return undefined;
  }
}

function throwDocumentHttpError(response: Response, data: unknown): never {
  const record = typeof data === "object" && data !== null ? (data as Record<string, unknown>) : {};

  if (response.status === 409) {
    throw new BoardPatchConflictError(
      typeof record.message === "string"
        ? record.message
        : "The record was modified by another user. Refresh and retry.",
      null,
    );
  }

  if (response.status === 422) {
    throw new BoardPatchValidationError(
      typeof record.code === "string" ? record.code : "ValidationError",
      typeof record.message === "string" ? record.message : mapHttpStatusToMessage(422, data),
    );
  }

  throw new ApiError(mapHttpStatusToMessage(response.status, data), response.status);
}

export const workOrderBoardDocumentsApi = {
  listComments: async (workOrderId: string | number): Promise<WorkOrderComment[]> => {
    const data = await apiGet<unknown>(API_PATHS.workOrder.comments(workOrderId));
    const items = handleApiResponse<unknown[]>(data);
    return Array.isArray(items) ? items.map(mapBoardDetailComment) : [];
  },

  createComment: async (
    workOrderId: string | number,
    text: string,
    mentions?: string[],
  ): Promise<WorkOrderComment> => {
    const payload: CreateWorkOrderCommentPayload = { text };
    if (mentions && mentions.length > 0) {
      payload.mentions = mentions.map(String);
    }

    const data = await apiPost<unknown>(API_PATHS.workOrder.comments(workOrderId), payload);
    return mapBoardDetailComment(handleApiResponse(data));
  },

  updateComment: async (
    workOrderId: string | number,
    commentId: string | number,
    text: string,
  ): Promise<WorkOrderComment> => {
    const response = await apiRequestRaw(
      "patch",
      API_PATHS.workOrder.commentItem(workOrderId, commentId),
      { json: { text }, throwHttpErrors: false },
      "workOrderBoardDocumentsApi.updateComment",
    );
    const data = await readResponseJson(response);

    if (response.ok) {
      if (response.status === 204 || data == null) {
        return mapBoardDetailComment({ id: commentId, text });
      }
      return mapBoardDetailComment(handleApiResponse(data) ?? data);
    }

    throwDocumentHttpError(response, data);
  },

  /** @deprecated Prefer createComment — modern board endpoint. */
  addComment: async (
    workOrderId: string | number,
    text: string,
    _commentType?: string,
  ): Promise<WorkOrderComment> => {
    return workOrderBoardDocumentsApi.createComment(workOrderId, text);
  },

  listMedia: async (workOrderId: string | number): Promise<WorkOrderBoardMediaItem[]> => {
    const data = await apiGet<unknown>(API_PATHS.workOrder.media(workOrderId));
    const items = handleApiResponse<unknown[]>(data);
    return Array.isArray(items) ? items.map(mapBoardDetailMediaItem) : [];
  },

  uploadMedia: async (
    workOrderId: string | number,
    file: File,
    category?: UploadableMediaCategory,
    options?: { signal?: AbortSignal; onProgress?: (percent: number) => void },
  ): Promise<WorkOrderBoardMediaItem> => {
    const formData = buildMediaFormData(file, category);
    const response = await apiRequestRaw(
      "post",
      API_PATHS.workOrder.media(workOrderId),
      {
        body: formData,
        throwHttpErrors: false,
        signal: options?.signal,
        onUploadProgress: options?.onProgress
          ? (progress) => {
              options.onProgress?.(Math.round(progress.percent * 100));
            }
          : undefined,
      },
      "workOrderBoardDocumentsApi.uploadMedia",
    );
    const data = await readResponseJson(response);
    if (response.ok) {
      return mapBoardDetailMediaItem(handleApiResponse(data) ?? data);
    }
    throwDocumentHttpError(response, data);
  },

  updateMediaCategory: async (
    workOrderId: string | number,
    mediaId: string | number,
    category: UploadableMediaCategory,
    workOrderVersion: string,
  ): Promise<WorkOrderBoardMediaItem> => {
    if (!workOrderVersion) {
      throw new BoardPatchValidationError(
        "WorkOrderVersionRequired",
        "workOrderVersion is required to update media category.",
      );
    }

    const formData = new FormData();
    formData.append("category", category);
    formData.append("workOrderVersion", workOrderVersion);
    const response = await apiRequestRaw(
      "patch",
      API_PATHS.workOrder.mediaItem(workOrderId, mediaId),
      { body: formData, throwHttpErrors: false },
      "workOrderBoardDocumentsApi.updateMediaCategory",
    );
    const data = await readResponseJson(response);
    if (response.ok) {
      return mapBoardDetailMediaItem(handleApiResponse(data) ?? data);
    }
    throwDocumentHttpError(response, data);
  },

  deleteMedia: async (
    workOrderId: string | number,
    mediaId: string | number,
    workOrderVersion: string,
  ): Promise<void> => {
    if (!workOrderVersion) {
      throw new BoardPatchValidationError(
        "WorkOrderVersionRequired",
        "workOrderVersion is required to delete media.",
      );
    }

    const numericId = typeof mediaId === "number" ? mediaId : Number(mediaId);
    if (!Number.isFinite(numericId) || numericId <= 0) {
      throw new BoardPatchValidationError(
        "InvalidMedia",
        "Legacy media cannot be deleted via this endpoint.",
      );
    }

    const response = await apiRequestRaw(
      "delete",
      API_PATHS.workOrder.mediaItem(workOrderId, numericId),
      { searchParams: { workOrderVersion }, throwHttpErrors: false },
      "workOrderBoardDocumentsApi.deleteMedia",
    );

    if (response.status === 204) {
      return;
    }

    const data = await readResponseJson(response);
    if (response.ok) {
      return;
    }
    throwDocumentHttpError(response, data);
  },

  uploadCompletionDoc: async (
    workOrderId: string | number,
    params: {
      file: File;
      workOrderVersion: string;
      signOffName?: string;
      signOffSignature?: string;
    },
  ): Promise<WorkOrderBoardCompletion> => {
    if (!params.workOrderVersion) {
      throw new BoardPatchValidationError(
        "WorkOrderVersionRequired",
        "workOrderVersion is required to upload a completion document.",
      );
    }

    const formData = buildCompletionDocFormData(params);
    const response = await apiRequestRaw(
      "post",
      API_PATHS.workOrder.completionDoc(workOrderId),
      { body: formData, throwHttpErrors: false },
      "workOrderBoardDocumentsApi.uploadCompletionDoc",
    );
    const data = await readResponseJson(response);
    if (response.ok) {
      return mapCompletion(handleApiResponse(data) ?? data);
    }
    throwDocumentHttpError(response, data);
  },
};