package api

import (
	"net/http"
	"os"
	"path/filepath"
	"runtime"
)

// openAPISpecPath returns the path to the OpenAPI spec file
func openAPISpecPath() string {
	// Get the directory of this source file
	_, filename, _, _ := runtime.Caller(0)
	dir := filepath.Dir(filename)
	// Navigate to repo root and then to api/
	return filepath.Join(dir, "..", "..", "api", "openapi.yaml")
}

// ServeOpenAPISpec serves the OpenAPI specification as YAML
func ServeOpenAPISpec(w http.ResponseWriter, _ *http.Request) {
	specPath := openAPISpecPath()
	data, err := os.ReadFile(specPath)
	if err != nil {
		http.Error(w, "Failed to read OpenAPI spec", http.StatusInternalServerError)
		return
	}
	w.Header().Set("Content-Type", "application/yaml")
	w.WriteHeader(http.StatusOK)
	_, _ = w.Write(data)
}