package web

import (
	"errors"
	"net/http"

	"tug/internal/transport/web/text"
)

type adminPendingData struct {
	Viewer   Ident
	ID       string
	Username Ident
	Expires  Ident
	Spent    bool
	Message  text.Key
}

func (a *admin) pendingAccount(w http.ResponseWriter, r *http.Request) (Principal, string, AdminPendingAccount, bool) {
	p, ok := a.kit.principal(w, r)
	if !ok {
		return Principal{}, "", AdminPendingAccount{}, false
	}
	id, ok := a.id(w, r)
	if !ok {
		return Principal{}, "", AdminPendingAccount{}, false
	}
	acct, err := a.b.PendingAccount(r.Context(), id)
	if err != nil {
		a.failed(w, r, "pending account", err)
		return Principal{}, "", AdminPendingAccount{}, false
	}
	return p, id, acct, true
}

func (a *admin) pendingPage(w http.ResponseWriter, r *http.Request, p Principal, id string, acct AdminPendingAccount, message text.Key) {
	if acct.Spent && message == "" {
		message = text.AdminProblemConfirmSpent
	}
	a.render(w, r, http.StatusOK, "admin-user-confirm", adminPendingData{Viewer: p.Username, ID: id, Username: Ident(acct.Username), Expires: Ident(stamp(acct.ExpiresAt)), Spent: acct.Spent, Message: message})
}

func (a *admin) confirmShow(w http.ResponseWriter, r *http.Request) {
	if p, id, acct, ok := a.pendingAccount(w, r); ok {
		a.pendingPage(w, r, p, id, acct, "")
	}
}

func (a *admin) confirmRun(w http.ResponseWriter, r *http.Request) {
	p, id, acct, ok := a.pendingAccount(w, r)
	if !ok {
		return
	}
	err := a.b.ConfirmAccount(r.Context(), p.UserID, id, r.PostFormValue("code"))
	switch {
	case errors.Is(err, ErrAdminConfirmCode):
		fresh, err := a.b.PendingAccount(r.Context(), id)
		if err != nil {
			a.failed(w, r, "pending account", err)
			return
		}
		if fresh.Spent {
			a.pendingPage(w, r, p, id, fresh, text.AdminProblemConfirmSpent)
			return
		}
		a.pendingPage(w, r, p, id, fresh, text.AdminProblemConfirmCode)
	case errors.Is(err, ErrAdminConfirmSpent):
		acct.Spent = true
		a.pendingPage(w, r, p, id, acct, text.AdminProblemConfirmSpent)
	case err != nil:
		a.failed(w, r, "confirm account", err)
	default:
		a.done(w, r, text.FlashAdminUserConfirmed, Ident(acct.Username), "/users/"+id)
	}
}