import type { Project, Workflow, ExecutionLogEntry, Comment, Timer, KbArticle, KbArticleSummary, PlanStepInfo, LlmCallLogEntry, ChatMessage } from './types'

const BASE = `${import.meta.env.BASE_URL.replace(/\/$/, '')}/api`

async function request<T>(path: string, options?: RequestInit): Promise<T> {
  const res = await fetch(`${BASE}${path}`, {
    headers: { 'Content-Type': 'application/json' },
    ...options,
  })
  if (!res.ok) {
    const text = await res.text()
    throw new Error(`API error ${res.status}: ${text}`)
  }
  return res.json()
}

export const api = {
  listProjects: () => request<Project[]>('/projects'),

  createProject: (name: string, description = '') =>
    request<Project>('/projects', {
      method: 'POST',
      body: JSON.stringify({ name, description }),
    }),

  getProject: (id: string) => request<Project | null>(`/projects/${id}`),

  updateProject: (id: string, data: { name?: string; description?: string }) =>
    request<Project | null>(`/projects/${id}`, {
      method: 'PUT',
      body: JSON.stringify(data),
    }),

  deleteProject: (id: string) =>
    request<boolean>(`/projects/${id}`, { method: 'DELETE' }),

  listWorkflows: (projectId: string) =>
    request<Workflow[]>(`/projects/${projectId}/workflows`),

  createWorkflow: (projectId: string, requirement: string, templateId?: string) =>
    request<Workflow>(`/projects/${projectId}/workflows`, {
      method: 'POST',
      body: JSON.stringify({ requirement, template_id: templateId || undefined }),
    }),

  listTemplates: () =>
    request<{ id: string; name: string; description: string; examples: { label: string; text: string }[] }[]>('/templates'),

  listSteps: (workflowId: string) =>
    request<ExecutionLogEntry[]>(`/workflows/${workflowId}/steps`),

  listComments: (workflowId: string) =>
    request<Comment[]>(`/workflows/${workflowId}/comments`),

  createComment: (workflowId: string, content: string) =>
    request<Comment>(`/workflows/${workflowId}/comments`, {
      method: 'POST',
      body: JSON.stringify({ content }),
    }),

  getReport: (workflowId: string) =>
    request<{ report: string }>(`/workflows/${workflowId}/report`),

  listPlanSteps: (workflowId: string) =>
    request<PlanStepInfo[]>(`/workflows/${workflowId}/plan`),

  listLlmCalls: (workflowId: string) =>
    request<LlmCallLogEntry[]>(`/workflows/${workflowId}/llm-calls`),

  listTimers: (projectId: string) =>
    request<Timer[]>(`/projects/${projectId}/timers`),

  createTimer: (projectId: string, data: { name: string; interval_secs: number; requirement: string }) =>
    request<Timer>(`/projects/${projectId}/timers`, {
      method: 'POST',
      body: JSON.stringify(data),
    }),

  updateTimer: (timerId: string, data: { name?: string; interval_secs?: number; requirement?: string; enabled?: boolean }) =>
    request<Timer>(`/timers/${timerId}`, {
      method: 'PUT',
      body: JSON.stringify(data),
    }),

  deleteTimer: (timerId: string) =>
    request<void>(`/timers/${timerId}`, { method: 'DELETE' }),

  getKb: () => request<{ content: string }>('/kb'),

  listArticles: () => request<KbArticleSummary[]>('/kb/articles'),

  createArticle: (title: string) =>
    request<KbArticle>('/kb/articles', {
      method: 'POST',
      body: JSON.stringify({ title }),
    }),

  getArticle: (id: string) => request<KbArticle>(`/kb/articles/${id}`),

  updateArticle: (id: string, data: { title?: string; content?: string }) =>
    request<KbArticle>(`/kb/articles/${id}`, {
      method: 'PUT',
      body: JSON.stringify(data),
    }),

  deleteArticle: (id: string) =>
    request<boolean>(`/kb/articles/${id}`, { method: 'DELETE' }),

  chat: (messages: ChatMessage[]) =>
    request<{ reply: string }>('/chat', {
      method: 'POST',
      body: JSON.stringify({ messages }),
    }),

  getSettings: () => request<Record<string, string>>('/settings'),

  putSetting: (key: string, value: string) =>
    request<Record<string, string>>(`/settings/${key}`, {
      method: 'PUT',
      body: JSON.stringify({ value }),
    }),
}