import type { SessionMeta, SessionEvent } from '../../../api/types/session'

export interface ListParams {
  days?: number
  project?: string
  tool?: string
  skill?: string
  q?: string
  limit?: number
  offset?: number
}

export interface ListResponse {
  total: number
  items: SessionMeta[]
}

const API_BASE = import.meta.env.VITE_API_BASE ?? ''

function buildQuery(params: Record<string, unknown>): string {
  const entries = Object.entries(params).filter(([, v]) => v !== undefined && v !== '' && v !== null)
  if (entries.length === 0) return ''
  return '?' + new URLSearchParams(entries as [string, string][]).toString()
}

export async function listSessions(params: ListParams): Promise<ListResponse> {
  const res = await fetch(`${API_BASE}/api/sessions${buildQuery(params as Record<string, unknown>)}`)
  if (!res.ok) throw new Error(`listSessions failed: ${res.status}`)
  return res.json()
}

export async function getSession(id: string): Promise<{ meta: SessionMeta; events: SessionEvent[] }> {
  const res = await fetch(`${API_BASE}/api/sessions/${encodeURIComponent(id)}`)
  if (!res.ok) throw new Error(`getSession failed: ${res.status}`)
  return res.json()
}