package api

import (
	"bytes"
	"encoding/json"
	"fmt"
	"net/http"
	"net/http/httptest"
	"testing"
	"time"

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

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

	dsn := fmt.Sprintf("file:%s?mode=memory&cache=shared", t.Name())
	db, err := gorm.Open(sqlite.Open(dsn), &gorm.Config{})
	if err != nil {
		t.Fatalf("open sqlite: %v", err)
	}
	if err := db.AutoMigrate(&model.Master{}, &model.Key{}, &model.LogRecord{}); err != nil {
		t.Fatalf("migrate: %v", err)
	}

	m1 := &model.Master{Name: "m1", Group: "g", Status: "active", Epoch: 1, MasterKeyDigest: "d1"}
	m2 := &model.Master{Name: "m2", Group: "g", Status: "active", Epoch: 1, MasterKeyDigest: "d2"}
	if err := db.Create(m1).Error; err != nil {
		t.Fatalf("create m1: %v", err)
	}
	if err := db.Create(m2).Error; err != nil {
		t.Fatalf("create m2: %v", err)
	}
	k1 := &model.Key{MasterID: m1.ID, TokenHash: "h1", Group: "g", Status: "active", IssuedAtEpoch: 1}
	k2 := &model.Key{MasterID: m2.ID, TokenHash: "h2", Group: "g", Status: "active", IssuedAtEpoch: 1}
	if err := db.Create(k1).Error; err != nil {
		t.Fatalf("create k1: %v", err)
	}
	if err := db.Create(k2).Error; err != nil {
		t.Fatalf("create k2: %v", err)
	}

	if err := db.Create(&model.LogRecord{Group: "rg", KeyID: k1.ID, ModelName: "ns.m", StatusCode: 200, LatencyMs: 10}).Error; err != nil {
		t.Fatalf("create log1: %v", err)
	}
	if err := db.Create(&model.LogRecord{Group: "rg", KeyID: k2.ID, ModelName: "ns.m", StatusCode: 400, LatencyMs: 20}).Error; err != nil {
		t.Fatalf("create log2: %v", err)
	}

	mh := &MasterHandler{db: db, logDB: db}

	withMaster := func(next gin.HandlerFunc) gin.HandlerFunc {
		return func(c *gin.Context) {
			c.Set("master", m1)
			next(c)
		}
	}

	r := gin.New()
	r.GET("/v1/logs", withMaster(mh.ListSelfLogs))

	rr := httptest.NewRecorder()
	req := httptest.NewRequest(http.MethodGet, "/v1/logs", nil)
	r.ServeHTTP(rr, req)
	if rr.Code != http.StatusOK {
		t.Fatalf("expected 200, got %d body=%s", rr.Code, rr.Body.String())
	}
	var resp ListMasterLogsResponse
	if err := json.Unmarshal(rr.Body.Bytes(), &resp); err != nil {
		t.Fatalf("unmarshal: %v", err)
	}
	if resp.Total != 1 || len(resp.Items) != 1 {
		t.Fatalf("expected 1 item, got total=%d len=%d body=%s", resp.Total, len(resp.Items), rr.Body.String())
	}
	if resp.Items[0].KeyID != k1.ID {
		t.Fatalf("expected key_id %d, got %+v", k1.ID, resp.Items[0])
	}

	var raw map[string]any
	if err := json.Unmarshal(rr.Body.Bytes(), &raw); err != nil {
		t.Fatalf("unmarshal raw: %v", err)
	}
	items, ok := raw["items"].([]any)
	if !ok || len(items) == 0 {
		t.Fatalf("expected items array in response")
	}
	first, ok := items[0].(map[string]any)
	if !ok {
		t.Fatalf("expected item object in response")
	}
	if _, ok := first["provider_id"]; ok {
		t.Fatalf("expected provider_id to be omitted")
	}
	if _, ok := first["provider_type"]; ok {
		t.Fatalf("expected provider_type to be omitted")
	}
	if _, ok := first["provider_name"]; ok {
		t.Fatalf("expected provider_name to be omitted")
	}
	if _, ok := first["client_ip"]; ok {
		t.Fatalf("expected client_ip to be omitted")
	}
}

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

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

	now := time.Date(2025, 1, 2, 3, 4, 5, 0, time.UTC)
	older := now.Add(-48 * time.Hour)
	cutoff := now.Add(-24 * time.Hour)

	log1 := model.LogRecord{KeyID: 1, ModelName: "m1", StatusCode: 200}
	log1.CreatedAt = older
	log2 := model.LogRecord{KeyID: 2, ModelName: "m1", StatusCode: 200}
	log2.CreatedAt = older
	log3 := model.LogRecord{KeyID: 1, ModelName: "m1", StatusCode: 200}
	log3.CreatedAt = now

	if err := db.Create(&log1).Error; err != nil {
		t.Fatalf("create log1: %v", err)
	}
	if err := db.Create(&log2).Error; err != nil {
		t.Fatalf("create log2: %v", err)
	}
	if err := db.Create(&log3).Error; err != nil {
		t.Fatalf("create log3: %v", err)
	}

	h := &Handler{db: db, logDB: db}
	r := gin.New()
	r.DELETE("/admin/logs", h.DeleteLogs)

	body := []byte(fmt.Sprintf(`{"before":"%s","key_id":1,"model":"m1"}`, cutoff.Format(time.RFC3339)))
	req := httptest.NewRequest(http.MethodDelete, "/admin/logs", bytes.NewReader(body))
	rr := httptest.NewRecorder()
	r.ServeHTTP(rr, req)
	if rr.Code != http.StatusOK {
		t.Fatalf("expected 200, got %d body=%s", rr.Code, rr.Body.String())
	}

	var resp DeleteLogsResponse
	if err := json.Unmarshal(rr.Body.Bytes(), &resp); err != nil {
		t.Fatalf("unmarshal: %v", err)
	}
	if resp.DeletedCount != 1 {
		t.Fatalf("expected deleted_count=1, got %d", resp.DeletedCount)
	}

	var remaining int64
	if err := db.Model(&model.LogRecord{}).Count(&remaining).Error; err != nil {
		t.Fatalf("count logs: %v", err)
	}
	if remaining != 2 {
		t.Fatalf("expected 2 logs remaining, got %d", remaining)
	}
}

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

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

	h := &Handler{db: db, logDB: db}
	r := gin.New()
	r.DELETE("/admin/logs", h.DeleteLogs)

	req := httptest.NewRequest(http.MethodDelete, "/admin/logs", bytes.NewReader([]byte(`{}`)))
	rr := httptest.NewRecorder()
	r.ServeHTTP(rr, req)
	if rr.Code != http.StatusBadRequest {
		t.Fatalf("expected 400, got %d body=%s", rr.Code, rr.Body.String())
	}
}