package handler

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

	"bugulma/backend/internal/service"

	"github.com/gin-gonic/gin"
)

type inMemorySettingsRepo struct {
	data map[string]map[string]any
}

func newInMemorySettingsRepo() *inMemorySettingsRepo {
	return &inMemorySettingsRepo{data: map[string]map[string]any{}}
}
func (r *inMemorySettingsRepo) Get(_ context.Context, key string) (map[string]any, error) {
	return r.data[key], nil
}
func (r *inMemorySettingsRepo) Set(_ context.Context, key string, value map[string]any) error {
	r.data[key] = value
	return nil
}

func TestSettingsAdmin_GetAndSetMaintenance(t *testing.T) {
	gin.SetMode(gin.TestMode)
	repo := newInMemorySettingsRepo()
	svc := service.NewSettingsService(repo)
	h := NewSettingsAdminHandler(svc)

	r := gin.New()
	r.GET("/api/v1/admin/settings/maintenance", h.GetMaintenance)
	r.PUT("/api/v1/admin/settings/maintenance", h.SetMaintenance)

	// GET initially should return disabled
	w := httptest.NewRecorder()
	req := httptest.NewRequest(http.MethodGet, "/api/v1/admin/settings/maintenance", nil)
	r.ServeHTTP(w, req)
	if w.Code != http.StatusOK {
		t.Fatalf("GET expected 200, got %d", w.Code)
	}
	var resp service.MaintenanceSetting
	if err := json.Unmarshal(w.Body.Bytes(), &resp); err != nil {
		t.Fatalf("unmarshal: %v", err)
	}
	if resp.Enabled {
		t.Fatalf("expected disabled initially")
	}

	// PUT update
	payload := service.MaintenanceSetting{Enabled: true, Message: "planned maintenance"}
	b, _ := json.Marshal(payload)
	w = httptest.NewRecorder()
	req = httptest.NewRequest(http.MethodPut, "/api/v1/admin/settings/maintenance", bytes.NewReader(b))
	req.Header.Set("Content-Type", "application/json")
	r.ServeHTTP(w, req)
	if w.Code != http.StatusOK {
		t.Fatalf("PUT expected 200, got %d", w.Code)
	}

	// GET again should reflect
	w = httptest.NewRecorder()
	req = httptest.NewRequest(http.MethodGet, "/api/v1/admin/settings/maintenance", nil)
	r.ServeHTTP(w, req)
	if w.Code != http.StatusOK {
		t.Fatalf("GET expected 200, got %d", w.Code)
	}
	if err := json.Unmarshal(w.Body.Bytes(), &resp); err != nil {
		t.Fatalf("unmarshal: %v", err)
	}
	if !resp.Enabled || resp.Message != "planned maintenance" {
		t.Fatalf("unexpected maintenance setting: %#v", resp)
	}
}