package main

import (
	"fmt"
	"log"
	"net/http"
	"strconv"

	"go-crm/config"
	"go-crm/internal/db"
	"go-crm/internal/handlers"
	"go-crm/internal/templates"
	wa "go-crm/internal/whatsapp"
	"go-crm/pkg/repo"
	"go-crm/pkg/usecase"

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

func main() {
	fmt.Println("main: starting db init")
	database, err := db.Init(config.DatabasePath())
	fmt.Println("main: db init returned")
	if err != nil {
		log.Fatalf("Failed to initialize database: %v", err)
	}
	defer database.Close()

	fmt.Println("main: initializing WhatsApp adapter")
	waConnector, err := wa.NewWhatsmeowAdapter(config.WhatsAppStorePath(), config.HTTPServerEndpoint(), config.InternalSecret())
	fmt.Println("main: WhatsApp adapter init returned")
	if err != nil {
		log.Printf("Warning: failed to initialize WhatsApp connector: %v", err)
		waConnector = nil
	} else {
		waConnector.SetClientDB(database)
	}

	// App is the single dependency-injection container.
	// All handler methods receive DB and WAConnector through it,
	// eliminating package-level global state.
	// Build our clean-arch layers for leads
	leadRepo := repo.NewSQLiteLeadRepository(database)
	leadSvc := usecase.NewLeadService(leadRepo)
	app := handlers.NewApp(database, leadSvc, waConnector)

	// Also populate legacy globals so existing tests continue to work.
	handlers.SetupHandlers(database, waConnector)

	r := chi.NewRouter()

	r.Use(middleware.Logger)
	r.Use(middleware.Recoverer)
	r.Use(middleware.RequestID)
	r.Use(cors.Handler(cors.Options{
		AllowedOrigins:   []string{"*"},
		AllowedMethods:   []string{"GET", "POST", "PUT", "DELETE", "OPTIONS", "PATCH"},
		AllowedHeaders:   []string{"Accept", "Content-Type", "X-Internal-Secret", "Origin"},
		ExposedHeaders:   []string{"Content-Length", "Content-Type"},
		AllowCredentials: false,
		MaxAge:           86400,
	}))

	templates.Init()

	r.Get("/", app.Dashboard)

	r.Route("/auth", func(r chi.Router) {
		r.Get("/signup", app.SignupPage)
		r.Post("/signup", app.Signup)
		r.Get("/login", app.LoginPage)
		r.Post("/login", app.Login)
		r.Post("/logout", app.Logout)
		r.Get("/account", app.AccountPage)
		r.Post("/account", app.UpdateAccount)
	})

	r.Route("/clients", func(r chi.Router) {
		r.Get("/", app.ListClients)
		r.Post("/", app.CreateClient)
		r.Get("/{id}", app.ViewClient)
		r.Put("/{id}", app.UpdateClient)
		r.Delete("/{id}", app.DeleteClient)
	})

	r.Route("/customers", func(r chi.Router) {
		r.Get("/", app.ListCustomers)
		r.Post("/", app.CreateCustomer)
		r.Get("/{id}", app.ViewCustomer)
		r.Put("/{id}", app.UpdateCustomer)
		r.Delete("/{id}", app.DeleteCustomer)
	})

	r.Get("/debug/cors-test", func(w http.ResponseWriter, r *http.Request) {
		w.Header().Set("Content-Type", "application/json; charset=utf-8")
		w.Write([]byte(`{"status":"ok","origin":"` + r.Header.Get("Origin") + `"}`))
	})

	r.Get("/debug/whatsapp", func(w http.ResponseWriter, r *http.Request) {
		w.Header().Set("Content-Type", "application/json; charset=utf-8")
		if waConnector == nil {
			w.Write([]byte(`{"status":"error","error":"WhatsApp connector not initialized"}`))
			return
		}
		w.Write([]byte(`{"status":"ok","message":"WhatsApp connector initialized"}`))
	})

	r.Get("/debug/net-test", func(w http.ResponseWriter, r *http.Request) {
		w.Header().Set("Content-Type", "application/json; charset=utf-8")
		resp, err := http.Get("https://www.google.com")
		if err != nil {
			w.Write([]byte(`{"status":"error","error":` + err.Error() + `}`))
			return
		}
		defer resp.Body.Close()
		w.Write([]byte(`{"status":"ok","code":` + strconv.Itoa(resp.StatusCode) + `}`))
	})

	r.Route("/leads", func(r chi.Router) {
		r.Get("/", app.ListLeads)
		r.Get("/connect", app.LeadsConnectPage)
		r.Get("/qr", app.LeadsQR)
		r.Get("/verify/{client_id}", app.VerifyLead)
		r.Put("/{id}", app.UpdateLead)
		r.Delete("/{id}", app.DeleteLead)

		// Lead pipeline
		r.Post("/ingest", app.IngestLead)
		r.Get("/review", app.LeadReviewQueue)
		r.Put("/{id}/review", app.ConfirmLeadReview)
		r.Get("/all", app.LeadAllList)
		r.Delete("/{id}", app.DeleteLeadNew)

		// Keyword management
		r.Get("/keywords", app.LeadKeywordsPage)
		r.Post("/keywords", app.AddServiceKeyword)
		r.Delete("/keywords/{id}", app.DeleteServiceKeywordHandler)

		// Status management
		r.Post("/statuses", app.AddLeadStatusHandler)
		r.Delete("/statuses/{id}", app.DeleteLeadStatusHandler)
	})

	r.Get("/report", app.MonthlyReport)

	r.Route("/services", func(r chi.Router) {
		r.Get("/", app.ListServices)
		r.Post("/", app.CreateService)
		r.Get("/{id}", app.ViewService)
		r.Put("/{id}", app.UpdateService)
		r.Delete("/{id}", app.DeleteService)
	})

	r.Route("/scheduling", func(r chi.Router) {
		r.Get("/", app.ListSchedules)
		r.Post("/", app.CreateSchedule)
		r.Get("/{id}", app.ViewSchedule)
		r.Put("/{id}", app.UpdateSchedule)
		r.Delete("/{id}", app.DeleteSchedule)
	})

	r.Route("/payments", func(r chi.Router) {
		r.Get("/", app.ListPayments)
		r.Post("/", app.CreatePayment)
		r.Get("/{id}", app.ViewPayment)
		r.Put("/{id}", app.UpdatePayment)
		r.Delete("/{id}", app.DeletePayment)
	})

	r.Route("/questions", func(r chi.Router) {
		r.Get("/", app.ListQuestions)
		r.Post("/", app.CreateQuestion)
		r.Get("/{id}", app.ViewQuestion)
		r.Put("/{id}", app.UpdateQuestion)
		r.Delete("/{id}", app.DeleteQuestion)
	})

	r.Route("/answers", func(r chi.Router) {
		r.Get("/", app.ListAnswers)
		r.Post("/", app.CreateAnswer)
		r.Get("/{id}", app.ViewAnswer)
		r.Put("/{id}", app.UpdateAnswer)
		r.Delete("/{id}", app.DeleteAnswer)
	})

	fmt.Println("main: ready to serve")
	fmt.Println("CRM server running on http://localhost:8080")
	log.Fatal(http.ListenAndServe(":8080", r))
}