package api

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

	"github.com/ez-api/ez-api/internal/middleware"
	"github.com/ez-api/ez-api/internal/model"
	"github.com/gin-gonic/gin"
	"gorm.io/driver/sqlite"
	"gorm.io/gorm"
)

func TestAdminHandler_GetAPIKeyStatsSummary(t *testing.T) {
	gin.SetMode(gin.TestMode)

	db, err := gorm.Open(sqlite.Open("file::memory:?cache=shared"), &gorm.Config{})
	if err != nil {
		t.Fatalf("open sqlite: %v", err)
	}
	if err := db.AutoMigrate(&model.APIKey{}); err != nil {
		t.Fatalf("migrate: %v", err)
	}

	if err := db.Create(&model.APIKey{
		GroupID:         1,
		APIKey:          "k1",
		TotalRequests:   10,
		SuccessRequests: 7,
		FailureRequests: 3,
	}).Error; err != nil {
		t.Fatalf("create key1: %v", err)
	}
	if err := db.Create(&model.APIKey{
		GroupID:         1,
		APIKey:          "k2",
		TotalRequests:   5,
		SuccessRequests: 5,
		FailureRequests: 0,
	}).Error; err != nil {
		t.Fatalf("create key2: %v", err)
	}

	handler := &AdminHandler{db: db}
	r := gin.New()
	r.Use(middleware.ResponseEnvelope())
	r.GET("/admin/apikey-stats/summary", handler.GetAPIKeyStatsSummary)

	req := httptest.NewRequest(http.MethodGet, "/admin/apikey-stats/summary", nil)
	rec := httptest.NewRecorder()
	r.ServeHTTP(rec, req)

	if rec.Code != http.StatusOK {
		t.Fatalf("unexpected status: got=%d body=%s", rec.Code, rec.Body.String())
	}

	var resp APIKeyStatsSummaryResponse
	env := decodeEnvelope(t, rec, &resp)
	if env.Code != "ok" {
		t.Fatalf("expected code=ok, got %q", env.Code)
	}
	if resp.TotalRequests != 15 || resp.SuccessRequests != 12 || resp.FailureRequests != 3 {
		t.Fatalf("totals mismatch: %+v", resp)
	}
	if math.Abs(resp.SuccessRate-0.8) > 1e-6 || math.Abs(resp.FailureRate-0.2) > 1e-6 {
		t.Fatalf("rates mismatch: success=%f failure=%f", resp.SuccessRate, resp.FailureRate)
	}
}