package handlers

import (
	"fmt"
	"net/http"
	"net/smtp"
	"os"
	"strings"
)

// orderData passes the Stripe Payment Links (env-configured) to the order page.
// Links are bought via Stripe-hosted checkout; the buyer chooses quantity there
// (single 1-25, 10-pack 1-2). Prices: $5.00 + GST, $20.00 + GST (fee handled
// by Stripe Managed Payments).
type orderData struct {
	SingleLink string
	PackLink   string
	Thanks     bool
}

// Order renders the public ordering page.
func (a *App) Order(w http.ResponseWriter, r *http.Request) {
	a.render(w, r, "order", "Order tags",
		orderData{
			SingleLink: os.Getenv("ORDER_SINGLE_LINK"),
			PackLink:   os.Getenv("ORDER_PACK_LINK"),
			Thanks:     r.URL.Query().Get("thanks") == "1",
		}, "")
}

// ContactSubmit receives the contact form and emails the team via SMTP
// (env: SMTP_HOST/SMTP_PORT/SMTP_USER/SMTP_PASS, CONTACT_TO).
// Returns the contact page with a success/error notice.
func (a *App) ContactSubmit(w http.ResponseWriter, r *http.Request) {
	name := strings.TrimSpace(r.FormValue("name"))
	email := strings.TrimSpace(r.FormValue("email"))
	subject := strings.TrimSpace(r.FormValue("subject"))
	message := strings.TrimSpace(r.FormValue("message"))

	errMsg := ""
	if name == "" || email == "" || message == "" {
		errMsg = "Please fill in your name, email and message."
	} else if !strings.Contains(email, "@") {
		errMsg = "Please enter a valid email address."
	}

	if errMsg == "" {
		if err := sendContactEmail(name, email, subject, message); err != nil {
			fmt.Println("contact email failed:", err)
			errMsg = "Sorry — we couldn't send your message right now. Please email us directly at hello@where-woof.com."
		} else {
			// Success: show a confirmation instead of re-rendering the form.
			a.render(w, r, "contact", "Get in touch", contactData{Sent: true}, "")
			return
		}
	}

	a.render(w, r, "contact", "Get in touch", contactData{Error: errMsg}, errMsg)
}

// sendContactEmail sends the form contents to CONTACT_TO via Gmail SMTP
// (ENV: SMTP_HOST, SMTP_PORT, SMTP_USER, SMTP_PASS, CONTACT_TO).
func sendContactEmail(name, email, subject, message string) error {
	host := os.Getenv("SMTP_HOST")
	port := os.Getenv("SMTP_PORT")
	user := os.Getenv("SMTP_USER")
	pass := os.Getenv("SMTP_PASS")
	to := os.Getenv("CONTACT_TO")
	if host == "" || user == "" || pass == "" || to == "" {
		return fmt.Errorf("SMTP not configured")
	}
	if port == "" {
		port = "587"
	}

	subj := subject
	if subj == "" {
		subj = "Where Woof contact form"
	}
	body := fmt.Sprintf("From: %s <%s>\nSubject: %s\n\n%s", name, email, subj, message)

	msg := []byte("To: " + to + "\r\n" +
		"From: " + user + "\r\n" +
		"Subject: " + subj + "\r\n" +
		"MIME-Version: 1.0\r\n" +
		"Content-Type: text/plain; charset=utf-8\r\n" +
		"\r\n" + body + "\r\n")

	addr := host + ":" + port
	auth := smtp.PlainAuth("", user, pass, host)
	return smtp.SendMail(addr, auth, user, []string{to}, msg)
}