package api

import (
	"net/http"

	"task/internal/command"
	"task/internal/project"
	"task/internal/ticket"
)

// Server is the daemon HTTP API.
type Server struct {
	store     ticket.Store
	timeStore ticket.TimeStore
	projects  project.Store
	history   command.Executor
	hub       *hub
	mux       *http.ServeMux
}

// New constructs the API server.
func New(store ticket.Store, timeStore ticket.TimeStore, projects project.Store, history command.Executor) *Server {
	s := &Server{
		store:     store,
		timeStore: timeStore,
		projects:  projects,
		history:   history,
		hub:       newHub(),
		mux:       http.NewServeMux(),
	}
	s.routes()
	return s
}

// Handler returns the root HTTP handler with auth middleware.
func (s *Server) Handler() http.Handler {
	return s.withAuth(s.mux)
}

func (s *Server) routes() {
	s.mux.HandleFunc("GET /v1/health", s.handleHealth)

	s.mux.HandleFunc("GET /v1/projects", s.handleListProjects)
	s.mux.HandleFunc("POST /v1/projects", s.handleEnsureProject)
	s.mux.HandleFunc("DELETE /v1/projects/{id}", s.handleDeleteProject)
	s.mux.HandleFunc("GET /v1/projects/{id}/meta", s.handleGetMeta)
	s.mux.HandleFunc("PUT /v1/projects/{id}/meta", s.handleSaveMeta)
	s.mux.HandleFunc("GET /v1/projects/{id}/mcp-token", s.handleMCPTokenStatus)
	s.mux.HandleFunc("POST /v1/projects/{id}/mcp-token", s.handleMCPTokenCreate)
	s.mux.HandleFunc("DELETE /v1/projects/{id}/mcp-token", s.handleMCPTokenRevoke)

	s.mux.HandleFunc("GET /v1/tickets", s.handleListTickets)
	s.mux.HandleFunc("GET /v1/tickets/{id}", s.handleGetTicket)
	s.mux.HandleFunc("POST /v1/tickets", s.handleCreateTicket)
	s.mux.HandleFunc("PATCH /v1/tickets/{id}", s.handleUpdateTicket)
	s.mux.HandleFunc("DELETE /v1/tickets/{id}", s.handleDeleteTicket)
	s.mux.HandleFunc("POST /v1/tickets/{id}/move", s.handleMoveTicket)

	s.mux.HandleFunc("GET /v1/time", s.handleListTime)
	s.mux.HandleFunc("GET /v1/time/by-ticket/{ticketId}", s.handleListTimeByTicket)
	s.mux.HandleFunc("GET /v1/time/sum/{ticketId}", s.handleSumTime)
	s.mux.HandleFunc("POST /v1/time", s.handleAddTime)
	s.mux.HandleFunc("PATCH /v1/time/{id}", s.handleUpdateTime)
	s.mux.HandleFunc("DELETE /v1/time/{id}", s.handleRemoveTime)
	s.mux.HandleFunc("GET /v1/timer", s.handleGetTimer)
	s.mux.HandleFunc("PUT /v1/timer", s.handleSetTimer)

	s.mux.HandleFunc("GET /v1/history", s.handleHistoryStatus)
	s.mux.HandleFunc("POST /v1/undo", s.handleUndo)
	s.mux.HandleFunc("POST /v1/redo", s.handleRedo)

	s.mux.HandleFunc("POST /v1/sync/pull", s.handleSyncPull)
	s.mux.HandleFunc("POST /v1/sync/push", s.handleSyncPush)

	s.mux.HandleFunc("GET /v1/events", s.handleEvents)
}

func (s *Server) handleHealth(w http.ResponseWriter, _ *http.Request) {
	writeJSON(w, http.StatusOK, map[string]string{"status": "ok"})
}

func (s *Server) notify(projectID string) {
	s.hub.publish(Event{Type: "changed", ProjectID: projectID})
}