package router

// Podcast routes (plan §8). All under /api/podcasts with the JWT
// middleware; scoping is RLS's job (D20) — handlers add no visibility
// plumbing.

import (
	"bytes"
	"net/http"

	"bookhoard/templates"

	"github.com/labstack/echo/v5"
)

func registerPodcastRoutes(cfg *Config) {
	g := cfg.Echo.Group("/api/podcasts", createJWTMiddleware(cfg))

	// Episode-list renderer (issue #1): htmx actions answer with the
	// refreshed partial directly — no event indirection to miss. The
	// view assembly lives here (templates) while the action logic lives
	// in the handler; this closure is the sanctioned seam.
	cfg.PodcastHandler.SetEpisodeListRenderer(func(c *echo.Context, feedID string, includePolicySelect, includeOrderSelect bool) error {
		user, err := getTemplateUserWithTheme(c, cfg)
		if err != nil {
			return err
		}
		feedUUID, err := parsePodcastUUID(feedID)
		if err != nil {
			return err
		}
		data, err := buildPodcastDetailData(c, cfg, user, feedUUID)
		if err != nil {
			return err
		}
		var buf bytes.Buffer
		render := templates.PodcastEpisodeList
		if templates.HasActiveDownloads(data.Episodes) {
			render = templates.PodcastEpisodeListPolling
		}
		if err := render(*data).Render(c.Request().Context(), &buf); err != nil {
			return err
		}
		if includePolicySelect {
			// Issue #3: out-of-band swap of the auto-download select —
			// the dropdown reflects the flipped policy immediately.
			if err := templates.PodcastAutoDownloadSelectOOB(data.Feed).Render(c.Request().Context(), &buf); err != nil {
				return err
			}
		}
		if includeOrderSelect {
			// §0 item 3: out-of-band swap of the order select — the
			// "Reverse feed order" button flips to reverse; the
			// dropdown mirrors the server state immediately.
			if err := templates.PodcastOrderSelectOOB(data.Feed.ID, data.Order).Render(c.Request().Context(), &buf); err != nil {
				return err
			}
		}
		return c.HTML(http.StatusOK, buf.String())
	})

	g.POST("/feeds", cfg.PodcastHandler.AddFeed)
	g.GET("/feeds", cfg.PodcastHandler.ListFeeds)
	g.GET("/search", cfg.PodcastHandler.Search)

	// :id-scoped (RLS answers 404 for feeds outside the caller's scope).
	feeds := g.Group("/feeds/:id")
	feeds.GET("", cfg.PodcastHandler.GetFeed)
	feeds.GET("/sequence", cfg.PodcastHandler.GetFeedSequence)
	feeds.PUT("/order", cfg.PodcastHandler.SetFeedOrder)
	feeds.PUT("/subscription", cfg.PodcastHandler.UpdateSubscription)
	feeds.DELETE("/subscription", cfg.PodcastHandler.DeleteSubscription)
	feeds.POST("/refresh", cfg.PodcastHandler.RefreshFeed)
	feeds.POST("/episodes/:eid/download", cfg.PodcastHandler.DownloadEpisodes)
	feeds.DELETE("", cfg.PodcastHandler.DeleteFeed) // admin-only (handler checks role)
}