const BASE = 'http://localhost:8420/api'

async function get<T>(path: string): Promise<T> {
  const res = await fetch(`${BASE}${path}`)
  if (!res.ok) throw new Error(`${res.status} ${res.statusText}`)
  return res.json()
}

async function post<T>(path: string, body: unknown): Promise<T> {
  const res = await fetch(`${BASE}${path}`, {
    method: 'POST',
    headers: { 'Content-Type': 'application/json' },
    body: JSON.stringify(body),
  })
  if (!res.ok) throw new Error(`${res.status} ${res.statusText}`)
  return res.json()
}

export interface Project {
  id: string
  name: string
  path: string
  status: string
  priority: number
  tech_stack: string[] | null
  created_at: string
  total_tasks: number
  done_tasks: number
  active_tasks: number
  blocked_tasks: number
}

export interface ProjectDetail extends Project {
  tasks: Task[]
  modules: Module[]
  decisions: Decision[]
}

export interface Task {
  id: string
  project_id: string
  title: string
  status: string
  priority: number
  assigned_role: string | null
  parent_task_id: string | null
  brief: Record<string, unknown> | null
  spec: Record<string, unknown> | null
  created_at: string
  updated_at: string
}

export interface Decision {
  id: number
  project_id: string
  task_id: string | null
  type: string
  category: string | null
  title: string
  description: string
  tags: string[] | null
  created_at: string
}

export interface Module {
  id: number
  project_id: string
  name: string
  type: string
  path: string
  description: string | null
  owner_role: string | null
  dependencies: string[] | null
}

export interface CostEntry {
  project_id: string
  project_name: string
  runs: number
  total_tokens: number
  total_cost_usd: number
  total_duration_seconds: number
}

export const api = {
  projects: () => get<Project[]>('/projects'),
  project: (id: string) => get<ProjectDetail>(`/projects/${id}`),
  cost: (days = 7) => get<CostEntry[]>(`/cost?days=${days}`),
  createProject: (data: { id: string; name: string; path: string; tech_stack?: string[]; priority?: number }) =>
    post<Project>('/projects', data),
  createTask: (data: { project_id: string; title: string; priority?: number; route_type?: string }) =>
    post<Task>('/tasks', data),
  bootstrap: (data: { path: string; id: string; name: string }) =>
    post<{ project: Project }>('/bootstrap', data),
}