package simplex_test

import (
	"encoding/json"
	"testing"

	"sneak.berlin/go/simplexcalc/internal/simplex"
)

// newChatItems holds one message the bot must answer and four it must
// not, each shaped as the chat client sends it.
const newChatItems = `{"type":"newChatItems","user":{"userId":1},"chatItems":[
{"chatInfo":{"type":"direct","contact":{"contactId":3,"localDisplayName":"alice"}},
 "chatItem":{"chatDir":{"type":"directRcv"},
  "meta":{"itemId":41,"itemText":"2 + 2","itemEdited":false},
  "content":{"type":"rcvMsgContent","msgContent":{"type":"text","text":"2 + 2"}},
  "mentions":{},"reactions":[]}},
{"chatInfo":{"type":"direct","contact":{"contactId":3}},
 "chatItem":{"chatDir":{"type":"directSnd"},"meta":{"itemId":42},
  "content":{"type":"sndMsgContent","msgContent":{"type":"text","text":"4"}}}},
{"chatInfo":{"type":"group","groupInfo":{"groupId":9}},
 "chatItem":{"chatDir":{"type":"groupRcv","groupMember":{"groupMemberId":5}},
  "meta":{"itemId":43},
  "content":{"type":"rcvMsgContent","msgContent":{"type":"text","text":"1 + 1"}}}},
{"chatInfo":{"type":"direct","contact":{"contactId":3}},
 "chatItem":{"chatDir":{"type":"directRcv"},"meta":{"itemId":44},
  "content":{"type":"rcvMsgContent","msgContent":{"type":"file","text":"3 * 3"}}}},
{"chatInfo":{"type":"direct","contact":{"contactId":3}},
 "chatItem":{"chatDir":{"type":"directRcv"},"meta":{"itemId":45},
  "content":{"type":"rcvDirectEvent","rcvDirectEvent":{"type":"contactDeleted"}}}}
]}`

// TestMessage: only a text message a contact sent in a direct chat is a
// message to answer. Answering the bot's own messages would loop.
func TestMessage(t *testing.T) {
	t.Parallel()

	var r simplex.NewChatItems

	err := json.Unmarshal([]byte(newChatItems), &r)
	if err != nil {
		t.Fatalf("decoding: %v", err)
	}

	var got []simplex.Message

	for _, item := range r.ChatItems {
		if msg, ok := item.Message(); ok {
			got = append(got, msg)
		}
	}

	want := simplex.Message{ContactID: 3, ItemID: 41, Text: "2 + 2"}
	if len(got) != 1 || got[0] != want {
		t.Errorf("messages = %+v, want only %+v", got, want)
	}
}