package main

import (
	"strings"
	"testing"
)

func TestEchoHandler_PlainText(t *testing.T) {
	ft := NewFakeTelegram(t)
	h := &EchoHandler{tg: ft.Client()}
	bot := Bot{Slug: "echo", Token: "t1", Secret: "s"}

	if err := h.Handle(bgCtx(), MakeUpdate(1, 100, 42, 1, "salut"), bot); err != nil {
		t.Fatalf("handle: %v", err)
	}
	sent := ft.Sent()
	if len(sent) != 1 || sent[0].ChatID != 42 || sent[0].Text != "salut" {
		t.Fatalf("expected echo of 'salut' to chat 42, got %+v", sent)
	}
}

func TestEchoHandler_SlashEcho_StripsCommand(t *testing.T) {
	ft := NewFakeTelegram(t)
	h := &EchoHandler{tg: ft.Client()}
	bot := Bot{Slug: "echo", Token: "t1", Secret: "s"}

	if err := h.Handle(bgCtx(), MakeUpdate(2, 100, 42, 1, "/echo coucou monde"), bot); err != nil {
		t.Fatalf("handle: %v", err)
	}
	sent := ft.Sent()
	if len(sent) != 1 || sent[0].Text != "coucou monde" {
		t.Fatalf("expected reply 'coucou monde', got %q", sent[0].Text)
	}
}

func TestEchoHandler_EmptyTextNoSend(t *testing.T) {
	ft := NewFakeTelegram(t)
	h := &EchoHandler{tg: ft.Client()}
	bot := Bot{Slug: "echo", Token: "t1", Secret: "s"}

	if err := h.Handle(bgCtx(), MakeUpdate(3, 100, 42, 1, "   "), bot); err != nil {
		t.Fatalf("handle: %v", err)
	}
	if len(ft.Sent()) != 0 {
		t.Fatalf("empty text should send nothing, got %d", len(ft.Sent()))
	}
}

func TestEchoHandler_SlashEchoBare_DefaultMessage(t *testing.T) {
	ft := NewFakeTelegram(t)
	h := &EchoHandler{tg: ft.Client()}
	bot := Bot{Slug: "echo", Token: "t1", Secret: "s"}

	_ = h.Handle(bgCtx(), MakeUpdate(4, 100, 42, 1, "/echo"), bot)
	sent := ft.Sent()
	if len(sent) != 1 || !strings.Contains(sent[0].Text, "echo bot online") {
		t.Fatalf("expected default greeting, got %+v", sent)
	}
}