package controller

import (
	"net/http"
	"net/http/httptest"
	"strings"
	"testing"

	"github.com/QuantumNous/new-api/common"
	"github.com/QuantumNous/new-api/constant"
	"github.com/gin-gonic/gin"
	"github.com/stretchr/testify/assert"
	"github.com/stretchr/testify/require"
)

func TestCountClaudeTokensReturnsInputTokensWhenRelayCountingDisabled(t *testing.T) {
	gin.SetMode(gin.TestMode)
	originalCountToken := constant.CountToken
	constant.CountToken = false
	t.Cleanup(func() {
		constant.CountToken = originalCountToken
	})

	recorder := httptest.NewRecorder()
	ctx, _ := gin.CreateTestContext(recorder)
	ctx.Request = httptest.NewRequest(
		http.MethodPost,
		"/v1/messages/count_tokens?beta=true",
		strings.NewReader(`{
			"model":"gemini-3.6-flash",
			"messages":[{"role":"user","content":"count this prompt"}],
			"tools":[{"name":"lookup","description":"Look up a value","input_schema":{"type":"object","properties":{"query":{"type":"string"}}}}]
		}`),
	)
	ctx.Request.Header.Set("Content-Type", "application/json")
	common.SetContextKey(ctx, constant.ContextKeyOriginalModel, "gemini-3.6-flash")

	CountClaudeTokens(ctx)

	require.Equal(t, http.StatusOK, recorder.Code)
	var response struct {
		InputTokens int `json:"input_tokens"`
	}
	require.NoError(t, common.Unmarshal(recorder.Body.Bytes(), &response))
	assert.Positive(t, response.InputTokens)
}

func TestCountClaudeTokensRejectsMissingMessages(t *testing.T) {
	gin.SetMode(gin.TestMode)
	recorder := httptest.NewRecorder()
	ctx, _ := gin.CreateTestContext(recorder)
	ctx.Request = httptest.NewRequest(
		http.MethodPost,
		"/v1/messages/count_tokens",
		strings.NewReader(`{"model":"gemini-3.6-flash"}`),
	)
	ctx.Request.Header.Set("Content-Type", "application/json")

	CountClaudeTokens(ctx)

	require.Equal(t, http.StatusBadRequest, recorder.Code)
	var response struct {
		Type  string `json:"type"`
		Error struct {
			Type    string `json:"type"`
			Message string `json:"message"`
		} `json:"error"`
	}
	require.NoError(t, common.Unmarshal(recorder.Body.Bytes(), &response))
	assert.Equal(t, "error", response.Type)
	assert.Equal(t, "invalid_request_error", response.Error.Type)
	assert.Contains(t, response.Error.Message, "messages")
}