import {z} from 'zod'

export type GetApiTasksArgs = {assignedTo?: number | undefined, taskStatusId?: number | undefined, isOverdue?: boolean | undefined, isCompleted?: boolean | undefined, priority?: ('low' | 'medium' | 'high') | undefined, search?: string | undefined, sortBy?: ('title' | 'createdAt' | 'dueDate' | 'priority' | 'updatedAt') | undefined, sortType?: ('ASC' | 'DESC') | undefined, page: number, size: number, orderId?: number | undefined};

export type GetApiTasksOptions = {baseUrl?: string | undefined, accessToken?: string | undefined, fetch?: typeof fetch | undefined};

export const taskStatusInfoDto = z.object({id: z.number(), status: z.string(), backgroundColor: z.string().optional(), textColor: z.string().optional(), borderColor: z.string().optional()});

export const userSummaryDto = z.object({id: z.number(), firstName: z.string(), lastName: z.string(), email: z.string()});

export const taskMediaDto = z.object({id: z.number(), filename: z.string(), url: z.string(), contentType: z.string().optional(), size: z.number().optional(), createdAt: z.string()});

export const taskResponseDto = z.object({id: z.number(), orderId: z.number(), title: z.string(), description: z.string().optional(), status: taskStatusInfoDto, priority: z.string(), dueDate: z.string().optional(), isOverdue: z.boolean(), completedAt: z.string().optional(), assignedToUser: userSummaryDto.nullable().optional(), createdByUser: userSummaryDto, media: z.array(taskMediaDto), createdAt: z.string(), updatedAt: z.string()});

export const taskListResponseDto = z.object({totalItems: z.number(), items: z.array(taskResponseDto), page: z.number(), size: z.number()});

export const validateResponse = async <Output>(
  schema: {
    readonly '~standard': {
      readonly validate: (value: unknown) => ({ readonly value: Output; readonly issues?: undefined } | { readonly issues: ReadonlyArray<{ readonly message: string; readonly path?: ReadonlyArray<PropertyKey | { readonly key: PropertyKey }> | undefined }> }) | Promise<{ readonly value: Output; readonly issues?: undefined } | { readonly issues: ReadonlyArray<{ readonly message: string; readonly path?: ReadonlyArray<PropertyKey | { readonly key: PropertyKey }> | undefined }> }>
    }
  },
  value: unknown
): Promise<Output> => {
  const result = await schema['~standard'].validate(value)

  if (result.issues !== undefined) {
    const detail = result.issues
      .map(({ message, path }) =>
        path?.length
          ? `${path.map((segment) => String(typeof segment === 'object' ? segment.key : segment)).join('.')}: ${message}`
          : message
      )
      .join('; ')

    throw new Error(`Response does not match the schema: ${detail}`, { cause: { issues: result.issues } })
  }

  return result.value
};

/**
 * List tasks across all orders
 * 
 * GET /tasks
 */
export const getApiTasks = async (args: GetApiTasksArgs, options?: GetApiTasksOptions) => {
const {baseUrl = "https://api.findmydocument.net", fetch: fetchFn = fetch, accessToken} = options ?? {}

const query = new URLSearchParams()
const headers = new Headers()
headers.set('accept', "application/json")

if (args.assignedTo != null) query.append("assignedTo", String(args.assignedTo))
if (args.taskStatusId != null) query.append("taskStatusId", String(args.taskStatusId))
if (args.isOverdue != null) query.append("isOverdue", String(args.isOverdue))
if (args.isCompleted != null) query.append("isCompleted", String(args.isCompleted))
if (args.priority != null) query.append("priority", String(args.priority))
if (args.search != null) query.append("search", String(args.search))
if (args.sortBy != null) query.append("sortBy", String(args.sortBy))
if (args.sortType != null) query.append("sortType", String(args.sortType))
if (args.page != null) query.append("page", String(args.page))
if (args.size != null) query.append("size", String(args.size))
if (args.orderId != null) query.append("orderId", String(args.orderId))
if (accessToken !== undefined) headers.set('authorization', `Bearer ${accessToken}`)

const url = `${baseUrl.replace(/\/+$/, '')}/tasks${query.size > 0 ? `?${query}` : ''}`

const res = await fetchFn(url, {method: "GET", headers})

if (!res.ok) throw new Error(`Request failed with status ${res.status}`, {cause: {status: res.status, body: await res.text()}})

return validateResponse(taskListResponseDto, await res.json())
};