package api

import (
	"encoding/json"
	"net/http"

	"github.com/go-chi/chi/v5"
)

func (h *Handlers) ListTorrents(w http.ResponseWriter, r *http.Request) {
	torrents, err := h.TorrentService.ListTorrents(r.Context())
	if err != nil {
		writeError(w, http.StatusInternalServerError, err.Error())
		return
	}
	writeJSON(w, http.StatusOK, torrents)
}

func (h *Handlers) GetTorrent(w http.ResponseWriter, r *http.Request) {
	hash := chi.URLParam(r, "hash")
	torrent, err := h.TorrentService.GetTorrent(r.Context(), hash)
	if err != nil {
		writeError(w, http.StatusNotFound, err.Error())
		return
	}
	writeJSON(w, http.StatusOK, torrent)
}

func (h *Handlers) AddTorrent(w http.ResponseWriter, r *http.Request) {
	var req struct {
		URL      string  `json:"url"`
		SavePath *string `json:"save_path,omitempty"`
	}
	if err := json.NewDecoder(r.Body).Decode(&req); err != nil {
		writeError(w, http.StatusBadRequest, "invalid request body")
		return
	}

	if err := h.TorrentService.AddTorrentURL(r.Context(), req.URL, req.SavePath); err != nil {
		writeError(w, http.StatusInternalServerError, err.Error())
		return
	}

	writeJSON(w, http.StatusOK, map[string]string{"status": "added"})
}

func (h *Handlers) RemoveTorrent(w http.ResponseWriter, r *http.Request) {
	hash := chi.URLParam(r, "hash")

	var req struct {
		DeleteFiles bool `json:"delete_files"`
	}
	json.NewDecoder(r.Body).Decode(&req)

	if err := h.TorrentService.RemoveTorrent(r.Context(), hash, req.DeleteFiles); err != nil {
		writeError(w, http.StatusNotFound, err.Error())
		return
	}

	writeJSON(w, http.StatusOK, map[string]string{"status": "removed"})
}

func (h *Handlers) PauseTorrent(w http.ResponseWriter, r *http.Request) {
	hash := chi.URLParam(r, "hash")
	if err := h.TorrentService.PauseTorrent(r.Context(), hash); err != nil {
		writeError(w, http.StatusNotFound, err.Error())
		return
	}
	writeJSON(w, http.StatusOK, map[string]string{"status": "paused"})
}

func (h *Handlers) ResumeTorrent(w http.ResponseWriter, r *http.Request) {
	hash := chi.URLParam(r, "hash")
	if err := h.TorrentService.ResumeTorrent(r.Context(), hash); err != nil {
		writeError(w, http.StatusNotFound, err.Error())
		return
	}
	writeJSON(w, http.StatusOK, map[string]string{"status": "resumed"})
}