// app/tasks/api.ts
// Browser-safe client for the /api/tasks routes.

import type { TaskStatus, TaskPriority, TaskType } from "./columns";

export interface Task {
  id: string;
  collectionId: string;
  collectionName: string;
  created: string;
  updated: string;
  title: string;
  description: string | null;
  task_type: TaskType;
  payload: Record<string, unknown> | null;
  status: TaskStatus;
  priority: TaskPriority;
  assignee: string | null;
  claimed_by: string | null;
  claimed_at: string | null;
  started_at: string | null;
  completed_at: string | null;
  duration_ms: number | null;
  result: unknown;
  error: string | null;
  log: string[] | null;
  retry_count: number;
  created_by: string | null;
}

export interface ListParams {
  status?: TaskStatus | "all";
  task_type?: TaskType;
  priority?: TaskPriority;
  include_done?: boolean;
  limit?: number;
}

export async function listTasks(params: ListParams = {}): Promise<Task[]> {
  const qs = new URLSearchParams();
  if (params.status) qs.set("status", params.status);
  if (params.task_type) qs.set("task_type", params.task_type);
  if (params.priority) qs.set("priority", params.priority);
  if (params.include_done) qs.set("include_done", "true");
  if (params.limit) qs.set("limit", String(params.limit));

  const res = await fetch(`/api/tasks?${qs.toString()}`, { cache: "no-store" });
  if (!res.ok) throw new Error(`list failed (${res.status})`);
  const data = await res.json();
  return data.items as Task[];
}

export async function getTask(id: string): Promise<Task> {
  const res = await fetch(`/api/tasks/${id}`, { cache: "no-store" });
  if (!res.ok) throw new Error(`get failed (${res.status})`);
  return res.json();
}

export interface CreateTaskInput {
  title: string;
  description?: string;
  task_type: TaskType;
  payload?: Record<string, unknown>;
  status?: TaskStatus;
  priority?: TaskPriority;
  assignee?: string;
  created_by?: string;
}

export async function createTask(input: CreateTaskInput): Promise<Task> {
  const res = await fetch(`/api/tasks`, {
    method: "POST",
    headers: { "Content-Type": "application/json" },
    body: JSON.stringify(input),
  });
  if (!res.ok) {
    const err = await res.json().catch(() => ({}));
    throw new Error(err.error ?? `create failed (${res.status})`);
  }
  return res.json();
}

export async function patchTask(
  id: string,
  fields: Partial<Pick<Task, "title" | "description" | "priority" | "payload" | "assignee" | "status">>,
): Promise<Task> {
  const res = await fetch(`/api/tasks/${id}`, {
    method: "PATCH",
    headers: { "Content-Type": "application/json" },
    body: JSON.stringify(fields),
  });
  if (!res.ok) {
    const err = await res.json().catch(() => ({}));
    throw new Error(err.error ?? `patch failed (${res.status})`);
  }
  return res.json();
}

export async function deleteTask(id: string): Promise<void> {
  const res = await fetch(`/api/tasks/${id}`, { method: "DELETE" });
  if (!res.ok) throw new Error(`delete failed (${res.status})`);
}

export async function retryTask(id: string): Promise<Task> {
  const res = await fetch(`/api/tasks/${id}/retry`, { method: "POST" });
  if (!res.ok) {
    const err = await res.json().catch(() => ({}));
    throw new Error(err.error ?? `retry failed (${res.status})`);
  }
  const data = await res.json();
  return data.task as Task;
}

export async function cancelTask(id: string): Promise<Task> {
  const res = await fetch(`/api/tasks/${id}/cancel`, { method: "POST" });
  if (!res.ok) {
    const err = await res.json().catch(() => ({}));
    throw new Error(err.error ?? `cancel failed (${res.status})`);
  }
  const data = await res.json();
  return data.task as Task;
}