// Command openapi writes the API's OpenAPI spec to api/openapi.json.
// Clients (the web frontend, generated SDKs) treat that file as the
// contract for what the server exposes; regenerate it after any route
// change with `just openapi`.
//
// It builds the same route tree as cmd/api, but against a stub echo
// server with no real database connection: registering routes only
// inspects Go types via reflection and never calls the database, so a nil
// *db.Queries (which still satisfies db.Querier) is enough.
package main

import (
	"fmt"
	"os"

	"github.com/danielgtaylor/huma/v2"
	"github.com/danielgtaylor/huma/v2/adapters/humaecho"
	"github.com/labstack/echo/v4"

	"completed/internal/api"
	"completed/internal/db"
)

func main() {
	e := echo.New()
	humaApi := humaecho.New(e, huma.DefaultConfig("Completed API", "1.0.0"))

	var queries db.Querier = (*db.Queries)(nil)
	api.RegisterRoutes(humaApi, queries)

	data, err := humaApi.OpenAPI().MarshalJSON()
	if err != nil {
		fmt.Fprintf(os.Stderr, "marshal OpenAPI spec: %v\n", err)
		os.Exit(1)
	}

	const outPath = "api/openapi.json"
	if err := os.MkdirAll("api", 0o755); err != nil {
		fmt.Fprintf(os.Stderr, "create api/ directory: %v\n", err)
		os.Exit(1)
	}
	if err := os.WriteFile(outPath, append(data, '\n'), 0o644); err != nil {
		fmt.Fprintf(os.Stderr, "write %s: %v\n", outPath, err)
		os.Exit(1)
	}
	fmt.Printf("Wrote %s\n", outPath)
}