import { createMiddleware } from 'hono/factory'

type Env = {
  DB: D1Database
  API_TOKEN: string
}

export const bearerAuth = (expectedToken: string) =>
  createMiddleware<{ Bindings: Env }>(async (c, next) => {
    const header = c.req.header('Authorization')
    if (!header?.startsWith('Bearer ')) {
      return c.json({ error: 'Missing or invalid Authorization header' }, 401)
    }

    const token = header.slice(7)
    if (token !== expectedToken) {
      return c.json({ error: 'Invalid token' }, 401)
    }

    await next()
  })