package port

import (
	"errors"
	"net/http"

	"gitea.dwysokinski.me/twhelp/corev3/internal/port/internal/apimodel"
	"github.com/getkin/kin-openapi/openapi3"
)

func (h *apiHTTPHandler) sendOpenAPIJSON(w http.ResponseWriter, r *http.Request) {
	schema, err := h.getOpenAPISchema()
	if err != nil {
		w.WriteHeader(http.StatusInternalServerError)
		return
	}

	h.renderJSON(w, r, http.StatusOK, schema)
}

func getOpenAPISchema(cfg OpenAPIConfig) (*openapi3.T, error) {
	if !cfg.Enabled {
		return nil, errors.New("openapi is disabled")
	}

	schema, err := apimodel.GetSwagger()
	if err != nil {
		return nil, err
	}

	if len(cfg.Servers) == 0 {
		return schema, nil
	}

	schema.Servers = make(openapi3.Servers, 0, len(cfg.Servers))

	for _, s := range cfg.Servers {
		u := *s.URL
		u.Path = cfg.BasePath
		schema.Servers = append(schema.Servers, &openapi3.Server{
			URL: u.String(),
		})
	}

	return schema, nil
}