package handlers

import (
	"log"
	"net/http"
)

func (a *App) handleActivateGet(w http.ResponseWriter, r *http.Request) {
	acct, identity, err := a.currentAccount(r)
	if err != nil || acct == nil {
		data := map[string]any{
			"IdentityURL": a.cfg.IdentityURL,
			"AppURL":      a.cfg.AppURL,
			"NeedLogin":   true,
		}
		a.tmpl.ExecuteTemplate(w, "activate.html", data)
		return
	}

	if isSubscribedAccount(acct) {
		http.Redirect(w, r, "/dashboard", http.StatusSeeOther)
		return
	}

	data := map[string]any{
		"User":   accountDisplay(acct, identity),
		"AppURL": a.cfg.AppURL,
		"Ready":  true,
	}
	if err := a.tmpl.ExecuteTemplate(w, "activate.html", data); err != nil {
		log.Printf("template error: %v", err)
		http.Error(w, "internal error", http.StatusInternalServerError)
	}
}

func (a *App) handleActivatePost(w http.ResponseWriter, r *http.Request) {
	acct, _, err := a.currentAccount(r)
	if err != nil || acct == nil {
		http.Error(w, "not authenticated", http.StatusUnauthorized)
		return
	}

	if isSubscribedAccount(acct) {
		http.Redirect(w, r, "/dashboard", http.StatusSeeOther)
		return
	}
	if acct.StripeCustomerID == "" {
		http.Error(w, "no paid checkout found", http.StatusForbidden)
		return
	}

	inst, err := a.accounts.InstanceByAccountID(r.Context(), acct.ID)
	if err != nil {
		log.Printf("activate: instance lookup failed for account %d: %v", acct.ID, err)
		http.Error(w, "activation failed, contact support", http.StatusInternalServerError)
		return
	}
	if err := a.accounts.MarkSubscriptionStatus(r.Context(), acct.StripeCustomerID, "active"); err != nil {
		log.Printf("activate: subscription status update failed for account %d: %v", acct.ID, err)
	}
	if err := a.swarm.RestoreVolumes(inst.StackName, a.cfg.ArchivePath); err != nil {
		log.Printf("activate: volume restore failed for %s: %v", inst.StackName, err)
	}
	if err := a.swarm.DeployStack(inst.StackName, inst.Slug, a.cfg.TraefikDomain); err != nil {
		log.Printf("activate: stack deploy failed for %s: %v", inst.StackName, err)
	} else if err := a.accounts.UpdateInstanceState(r.Context(), inst.StackName, "running", true); err != nil {
		log.Printf("activate: state update failed for %s: %v", inst.StackName, err)
	}

	log.Printf("activated account %d stack=%s", acct.ID, inst.StackName)
	http.Redirect(w, r, "/dashboard", http.StatusSeeOther)
}