// Copyright 2019 Drone.IO Inc. All rights reserved.
// Use of this source code is governed by the Drone Non-Commercial License
// that can be found in the LICENSE file.

package builds

import (
	"fmt"
	"net/http"

	"github.com/drone/drone/handler/api/render"
	"github.com/drone/drone/core"

	"github.com/go-chi/chi"
)

// HandleLast returns an http.HandlerFunc that writes json-encoded
// build details to the the response body for the latest build.
func HandleLast(
	repos core.RepositoryStore,
	builds core.BuildStore,
	stages core.StageStore,
) http.HandlerFunc {
	return func(w http.ResponseWriter, r *http.Request) {
		var (
			namespace = chi.URLParam(r, "owner")
			name      = chi.URLParam(r, "name")
			ref       = r.FormValue("ref")
		)
		repo, err := repos.FindName(r.Context(), namespace, name)
		if err != nil {
			render.NotFound(w, err)
			return
		}
		if ref == "" {
			ref = fmt.Sprintf("refs/heads/%s", repo.Branch)
		}
		build, err := builds.FindRef(r.Context(), repo.ID, ref)
		if err != nil {
			render.NotFound(w, err)
			return
		}
		stages, err := stages.ListSteps(r.Context(), build.ID)
		if err != nil {
			render.InternalError(w, err)
			return
		}
		render.JSON(w, &buildWithStages{build, stages}, 200)
	}
}