import type { Context, Hono } from "hono";
import { generateSpecs, type GenerateSpecOptions } from "hono-openapi";

import type { AppEnv } from "@/worker/types";

export function openApiOptions(c?: Context<AppEnv>): Partial<GenerateSpecOptions> {
  const serverUrl = c ? new URL(c.req.url).origin : "https://dav.example.com";
  return {
    documentation: {
      openapi: "3.1.0",
      info: {
        title: "dab JSON API",
        version: "0.1.0",
        description: "Control-plane JSON API for dab DAV service.",
      },
      servers: [{ url: serverUrl }],
      components: {
        securitySchemes: {
          cookieSession: {
            type: "apiKey",
            in: "cookie",
            name: "__Host-dab_session",
          },
        },
      },
    },
  };
}

export function buildOpenApiDocument(app: Hono<AppEnv>, c?: Context<AppEnv>) {
  return generateSpecs(app, openApiOptions(c), c);
}