package api

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

	"github.com/google/uuid"
	"github.com/thepeterstone/claudomator/internal/task"
)

func (s *Server) handleListProjects(w http.ResponseWriter, r *http.Request) {
	projects, err := s.store.ListProjects()
	if err != nil {
		writeJSON(w, http.StatusInternalServerError, map[string]string{"error": err.Error()})
		return
	}
	if projects == nil {
		projects = []*task.Project{}
	}
	writeJSON(w, http.StatusOK, projects)
}

func (s *Server) handleCreateProject(w http.ResponseWriter, r *http.Request) {
	var p task.Project
	if err := json.NewDecoder(r.Body).Decode(&p); err != nil {
		writeJSON(w, http.StatusBadRequest, map[string]string{"error": "invalid JSON: " + err.Error()})
		return
	}
	if p.Name == "" {
		writeJSON(w, http.StatusBadRequest, map[string]string{"error": "name is required"})
		return
	}
	if p.ID == "" {
		p.ID = uuid.New().String()
	}
	if err := s.store.CreateProject(&p); err != nil {
		writeJSON(w, http.StatusInternalServerError, map[string]string{"error": err.Error()})
		return
	}
	writeJSON(w, http.StatusCreated, p)
}

func (s *Server) handleGetProject(w http.ResponseWriter, r *http.Request) {
	id := r.PathValue("id")
	p, err := s.store.GetProject(id)
	if err != nil {
		writeJSON(w, http.StatusNotFound, map[string]string{"error": "project not found"})
		return
	}
	writeJSON(w, http.StatusOK, p)
}

func (s *Server) handleUpdateProject(w http.ResponseWriter, r *http.Request) {
	id := r.PathValue("id")
	existing, err := s.store.GetProject(id)
	if err != nil {
		writeJSON(w, http.StatusNotFound, map[string]string{"error": "project not found"})
		return
	}
	if err := json.NewDecoder(r.Body).Decode(existing); err != nil {
		writeJSON(w, http.StatusBadRequest, map[string]string{"error": "invalid JSON: " + err.Error()})
		return
	}
	existing.ID = id // ensure ID cannot be changed via body
	if err := s.store.UpdateProject(existing); err != nil {
		writeJSON(w, http.StatusInternalServerError, map[string]string{"error": err.Error()})
		return
	}
	writeJSON(w, http.StatusOK, existing)
}