import {z} from 'zod'

export type GetApiTasksSearchArgs = {query?: string | undefined, project?: string | undefined, limit?: number | undefined, searchInClosed?: boolean | undefined};

export type GetApiTasksSearchOptions = {baseUrl?: string | undefined, ApiKeyAuth?: string | undefined, fetch?: typeof fetch | undefined};

export const taskAssignee = z.object({userId: z.number().optional(), accountId: z.string().optional(), accountName: z.string().optional()});

export const taskTime = z.object({total: z.number(), users: z.record(z.string(), z.number()), timerTime: z.number().optional()});

export const taskEstimate = z.object({total: z.number(), type: z.enum(["overall", "users"]), users: z.record(z.string(), z.number()).optional()});

export const task = z.object({id: z.string(), name: z.string(), type: z.string().optional(), url: z.string().optional(), number: z.string().optional(), projects: z.array(z.string()), section: z.number().nullable().optional(), labels: z.array(z.string()).optional(), position: z.number().optional(), description: z.string().nullable().optional(), dueAt: z.string().nullable().optional(), dueOn: z.string().nullable().optional(), status: z.enum(["open", "completed", "closed"]).optional(), completed: z.boolean().optional(), completedAt: z.string().nullable().optional(), createdAt: z.string().optional(), createdBy: z.number().optional(), favorite: z.boolean().optional(), assignees: z.array(taskAssignee).nullable().optional(), iteration: z.string().optional(), color: z.string().optional(), comments: z.number().optional(), time: taskTime.optional(), estimate: taskEstimate.optional(), attributes: z.record(z.string(), z.string()).optional(), metrics: z.record(z.string(), z.number()).optional(), unbillable: z.boolean().optional()});

export const getApiTasksSearchResponse = z.array(task);

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
};

/**
 * Search Tasks
 * 
 * GET /tasks/search
 */
export const getApiTasksSearch = async (args: GetApiTasksSearchArgs, options?: GetApiTasksSearchOptions) => {
const {baseUrl = "https://api.everhour.com", fetch: fetchFn = fetch, ApiKeyAuth} = options ?? {}

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

if (args.query != null) query.append("query", String(args.query))
if (args.project != null) query.append("project", String(args.project))
if (args.limit != null) query.append("limit", String(args.limit))
if (args.searchInClosed != null) query.append("searchInClosed", String(args.searchInClosed))
if (ApiKeyAuth !== undefined) headers.set("X-Api-Key", ApiKeyAuth)

const url = `${baseUrl.replace(/\/+$/, '')}/tasks/search${query.size > 0 ? `?${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(getApiTasksSearchResponse, await res.json())
};