yt-dlp-webui/server/rest/handlers.go

package rest

import (
	"encoding/json"
	"io"
	"net/http"
	"os"
	"path/filepath"

	"github.com/go-chi/chi/v5"
	"github.com/marcopeocchi/yt-dlp-web-ui/server/internal"
)

type Handler struct {
	service *Service
}

func (h *Handler) Exec() http.HandlerFunc {
	return func(w http.ResponseWriter, r *http.Request) {
		defer r.Body.Close()

		w.Header().Set("Content-Type", "application/json")

		req := internal.DownloadRequest{}

		if err := json.NewDecoder(r.Body).Decode(&req); err != nil {
			http.Error(w, err.Error(), http.StatusInternalServerError)
		}

		id, err := h.service.Exec(req)
		if err != nil {
			http.Error(w, err.Error(), http.StatusInternalServerError)
			return
		}

		err = json.NewEncoder(w).Encode(id)
		if err != nil {
			http.Error(w, err.Error(), http.StatusInternalServerError)
		}
	}
}

func (h *Handler) Running() http.HandlerFunc {
	return func(w http.ResponseWriter, r *http.Request) {
		defer r.Body.Close()

		w.Header().Set("Content-Type", "application/json")

		res, err := h.service.Running(r.Context())
		if err != nil {
			http.Error(w, err.Error(), http.StatusInternalServerError)
			return
		}

		err = json.NewEncoder(w).Encode(res)
		if err != nil {
			http.Error(w, err.Error(), http.StatusInternalServerError)
		}
	}
}

func (h *Handler) SetCookies() http.HandlerFunc {
	return func(w http.ResponseWriter, r *http.Request) {
		defer r.Body.Close()

		w.Header().Set("Content-Type", "application/json")

		req := new(internal.SetCookiesRequest)

		err := json.NewDecoder(r.Body).Decode(req)
		if err != nil {
			http.Error(w, err.Error(), http.StatusBadRequest)
			return
		}

		err = h.service.SetCookies(r.Context(), req.Cookies)
		if err != nil {
			http.Error(w, err.Error(), http.StatusInternalServerError)
			return
		}

		err = json.NewEncoder(w).Encode("ok")
		if err != nil {
			http.Error(w, err.Error(), http.StatusInternalServerError)
		}
	}
}

func (h *Handler) AddTemplate() http.HandlerFunc {
	return func(w http.ResponseWriter, r *http.Request) {
		defer r.Body.Close()

		w.Header().Set("Content-Type", "application/json")

		req := new(internal.CustomTemplate)

		err := json.NewDecoder(r.Body).Decode(req)
		if err != nil {
			http.Error(w, err.Error(), http.StatusBadRequest)
			return
		}

		if req.Name == "" || req.Content == "" {
			http.Error(w, "Invalid template", http.StatusBadRequest)
			return
		}

		err = h.service.SaveTemplate(r.Context(), req)
		if err != nil {
			http.Error(w, err.Error(), http.StatusInternalServerError)
			return
		}

		err = json.NewEncoder(w).Encode("ok")
		if err != nil {
			http.Error(w, err.Error(), http.StatusInternalServerError)
		}
	}
}

func (h *Handler) GetTemplates() http.HandlerFunc {
	return func(w http.ResponseWriter, r *http.Request) {
		defer r.Body.Close()

		w.Header().Set("Content-Type", "application/json")

		templates, err := h.service.GetTemplates(r.Context())
		if err != nil {
			http.Error(w, err.Error(), http.StatusInternalServerError)
			return
		}

		err = json.NewEncoder(w).Encode(templates)
		if err != nil {
			http.Error(w, err.Error(), http.StatusInternalServerError)
		}
	}
}

func (h *Handler) DeleteTemplate() http.HandlerFunc {
	return func(w http.ResponseWriter, r *http.Request) {
		defer r.Body.Close()

		w.Header().Set("Content-Type", "application/json")

		id := chi.URLParam(r, "id")

		err := h.service.DeleteTemplate(r.Context(), id)
		if err != nil {
			http.Error(w, err.Error(), http.StatusInternalServerError)
			return
		}

		err = json.NewEncoder(w).Encode("ok")
		if err != nil {
			http.Error(w, err.Error(), http.StatusInternalServerError)
		}
	}
}

func (h *Handler) DirectoryTree() http.HandlerFunc {
	return func(w http.ResponseWriter, r *http.Request) {
		defer r.Body.Close()

		w.Header().Set("Content-Type", "application/json")

		tree, err := h.service.DirectoryTree(r.Context())
		if err != nil {
			http.Error(w, err.Error(), http.StatusInternalServerError)
			return
		}

		err = json.NewEncoder(w).Encode(tree)
		if err != nil {
			http.Error(w, err.Error(), http.StatusInternalServerError)
		}
	}
}

func (h *Handler) DownloadFile() http.HandlerFunc {
	return func(w http.ResponseWriter, r *http.Request) {
		defer r.Body.Close()

		w.Header().Set("Content-Type", "application/json")

		id := chi.URLParam(r, "id")

		path, err := h.service.DownloadFile(r.Context(), id)
		if err != nil {
			http.Error(w, err.Error(), http.StatusInternalServerError)
			return
		}

		w.Header().Add(
			"Content-Disposition",
			"inline; filename="+filepath.Base(*path),
		)
		w.Header().Set(
			"Content-Type",
			"application/octet-stream",
		)

		fd, err := os.Open(*path)
		if err != nil {
			http.Error(w, err.Error(), http.StatusInternalServerError)
			return
		}

		io.Copy(w, fd)
	}
}