package middleware

import (
	"encoding/json"
	"net/http"
	"net/http/httptest"
	"testing"

	"veza-backend-api/internal/errors"

	"github.com/gin-gonic/gin"
	"github.com/stretchr/testify/assert"
	"github.com/stretchr/testify/require"
	"go.uber.org/zap"
)

func TestRecovery(t *testing.T) {
	gin.SetMode(gin.TestMode)
	logger := zap.NewNop()
	router := gin.New()
	router.Use(Recovery(logger, true))
	router.GET("/test", func(c *gin.Context) {
		panic("test panic")
	})

	w := httptest.NewRecorder()
	req := httptest.NewRequest("GET", "/test", nil)
	router.ServeHTTP(w, req)

	assert.Equal(t, http.StatusInternalServerError, w.Code)

	var response map[string]interface{}
	err := json.Unmarshal(w.Body.Bytes(), &response)
	require.NoError(t, err)

	errorObj := response["error"].(map[string]interface{})
	assert.Equal(t, float64(errors.ErrCodeInternal), errorObj["code"])
	assert.Equal(t, "Internal server error", errorObj["message"])
}

func TestRecovery_WithRequestID(t *testing.T) {
	gin.SetMode(gin.TestMode)
	logger := zap.NewNop()
	router := gin.New()
	router.Use(RequestID())
	router.Use(Recovery(logger, true))
	router.GET("/test", func(c *gin.Context) {
		panic("panic with request ID")
	})

	w := httptest.NewRecorder()
	req := httptest.NewRequest("GET", "/test", nil)
	router.ServeHTTP(w, req)

	assert.Equal(t, http.StatusInternalServerError, w.Code)
	assert.NotEmpty(t, w.Header().Get("X-Request-ID"))
}

func TestRecovery_WithUserID(t *testing.T) {
	gin.SetMode(gin.TestMode)
	logger := zap.NewNop()
	router := gin.New()
	router.Use(RequestID())
	router.Use(Recovery(logger, true))
	router.GET("/test", func(c *gin.Context) {
		c.Set("user_id", int64(42))
		panic("panic with user ID")
	})

	w := httptest.NewRecorder()
	req := httptest.NewRequest("GET", "/test", nil)
	router.ServeHTTP(w, req)

	assert.Equal(t, http.StatusInternalServerError, w.Code)
}

func TestRecovery_DifferentPanicTypes(t *testing.T) {
	gin.SetMode(gin.TestMode)
	logger := zap.NewNop()

	tests := []struct {
		name  string
		panic interface{}
	}{
		{"string panic", "string error"},
		{"error panic", assert.AnError},
		{"int panic", 42},
		{"nil panic", nil},
	}

	for _, tt := range tests {
		t.Run(tt.name, func(t *testing.T) {
			router := gin.New()
			router.Use(Recovery(logger, true))
			router.GET("/test", func(c *gin.Context) {
				panic(tt.panic)
			})

			w := httptest.NewRecorder()
			req := httptest.NewRequest("GET", "/test", nil)
			router.ServeHTTP(w, req)

			assert.Equal(t, http.StatusInternalServerError, w.Code)

			var response map[string]interface{}
			err := json.Unmarshal(w.Body.Bytes(), &response)
			require.NoError(t, err)

			errorObj := response["error"].(map[string]interface{})
			assert.Equal(t, float64(errors.ErrCodeInternal), errorObj["code"])
		})
	}
}

func TestRecovery_NoPanic(t *testing.T) {
	gin.SetMode(gin.TestMode)
	logger := zap.NewNop()
	router := gin.New()
	router.Use(Recovery(logger, true))
	router.GET("/test", func(c *gin.Context) {
		c.JSON(http.StatusOK, gin.H{"success": true})
	})

	w := httptest.NewRecorder()
	req := httptest.NewRequest("GET", "/test", nil)
	router.ServeHTTP(w, req)

	assert.Equal(t, http.StatusOK, w.Code)
	assert.Contains(t, w.Body.String(), "success")
}

func TestRecovery_StackTrace(t *testing.T) {
	gin.SetMode(gin.TestMode)
	// Créer un logger qui capture les logs
	var loggedFields []zap.Field
	captureLogger := zap.NewNop()
	// Note: En production, on utiliserait un logger qui capture vraiment
	// Pour ce test, on vérifie juste que le code ne panique pas

	router := gin.New()
	router.Use(RequestID())
	router.Use(Recovery(captureLogger, true))
	router.GET("/test", func(c *gin.Context) {
		panic("test for stack trace")
	})

	w := httptest.NewRecorder()
	req := httptest.NewRequest("GET", "/test", nil)
	router.ServeHTTP(w, req)

	assert.Equal(t, http.StatusInternalServerError, w.Code)

	// Vérifier que le logger a été appelé (pas de panic dans le logger)
	_ = loggedFields // Utilisé pour éviter l'avertissement
}

func TestRecovery_AbortsRequest(t *testing.T) {
	gin.SetMode(gin.TestMode)
	logger := zap.NewNop()
	router := gin.New()
	router.Use(Recovery(logger, true))
	router.GET("/test", func(c *gin.Context) {
		panic("test abort")
		// code unreachable removed
	})

	w := httptest.NewRecorder()
	req := httptest.NewRequest("GET", "/test", nil)
	router.ServeHTTP(w, req)

	assert.Equal(t, http.StatusInternalServerError, w.Code)
	assert.NotContains(t, w.Body.String(), "should")
}