package handlers_test

import (
	"database/sql"
	"encoding/json"
	"net/http"
	"net/http/httptest"
	"regexp"
	"testing"
	"time"

	"github.com/DATA-DOG/go-sqlmock"
	"github.com/rede5/gohorsejobs/backend/internal/api/handlers"
	"github.com/rede5/gohorsejobs/backend/internal/services"
)

// createTestAdminHandlers creates handlers with mocks and optional DB
func createTestAdminHandlers(t *testing.T, db *sql.DB) *handlers.AdminHandlers {
	t.Helper()

	var adminSvc *services.AdminService
	var jobSvc *services.JobService
	var auditSvc *services.AuditService

	if db != nil {
		adminSvc = services.NewAdminService(db)
		jobSvc = services.NewJobService(db)
		auditSvc = services.NewAuditService(db)
	}

	return handlers.NewAdminHandlers(
		adminSvc,
		auditSvc,
		jobSvc,
		nil, // Cloudflare service not needed for basic tests yet
	)
}

func TestNewAdminHandlers(t *testing.T) {
	h := handlers.NewAdminHandlers(nil, nil, nil, nil)
	if h == nil {
		t.Error("NewAdminHandlers should not return nil")
	}
}

func TestAdminHandlers_ListCompanies(t *testing.T) {
	db, mock, err := sqlmock.New()
	if err != nil {
		t.Fatalf("an error '%s' was not expected when opening a stub database connection", err)
	}
	defer db.Close()

	handlers := createTestAdminHandlers(t, db)

	// Mock Count Query
	mock.ExpectQuery(regexp.QuoteMeta(`SELECT COUNT(*) FROM companies`)).
		WillReturnRows(sqlmock.NewRows([]string{"count"}).AddRow(1))

	// Mock List Query
	// Mock List Query
	mock.ExpectQuery(regexp.QuoteMeta(`SELECT id, name, slug, type, document, address, region_id, city_id, phone, email, website, logo_url, description, active, verified, created_at, updated_at FROM companies ORDER BY created_at DESC LIMIT $1 OFFSET $2`)).
		WillReturnRows(sqlmock.NewRows([]string{"id", "name", "slug", "type", "document", "address", "region_id", "city_id", "phone", "email", "website", "logo_url", "description", "active", "verified", "created_at", "updated_at"}).
			AddRow(1, "Acme Corp", "acme-corp", "company", "1234567890", "Address", 1, 1, "123123123", "contact@acme.com", "https://acme.com", "", "Desc", true, true, time.Now(), time.Now()))

	req := httptest.NewRequest(http.MethodGet, "/api/v1/admin/companies", nil)
	rec := httptest.NewRecorder()

	handlers.ListCompanies(rec, req)

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

func TestAdminHandlers_DuplicateJob(t *testing.T) {
	db, mock, err := sqlmock.New()
	if err != nil {
		t.Fatalf("an error '%s' was not expected when opening a stub database connection", err)
	}
	defer db.Close()

	handlers := createTestAdminHandlers(t, db)

	// 1. Mock GetJobByID (for duplication source)
	// Updated query based on actual implementation
	rows := sqlmock.NewRows([]string{"company_id", "created_by", "title", "description", "salary_min", "salary_max", "salary_type", "employment_type", "work_mode", "working_hours", "location", "region_id", "city_id", "requirements", "benefits", "visa_support", "language_level"}).
		AddRow(1, 1, "Original Job", "Desc", 1000, 2000, "monthly", "full-time", "remote", "8h", "Remote", 1, 1, "[]", "[]", false, "native")

	mock.ExpectQuery(regexp.QuoteMeta(`SELECT company_id, created_by, title, description, salary_min, salary_max, salary_type, employment_type, work_mode, working_hours, location, region_id, city_id, requirements, benefits, visa_support, language_level FROM jobs WHERE id = $1`)).
		WithArgs(sqlmock.AnyArg()).
		WillReturnRows(rows)

	// 2. Mock INSERT
	// Note: The implementation might be returning more or fewer columns, blindly matching logic usually safer but here we try to match.
	// Implementation typically inserts and returns ID.
	mock.ExpectQuery(regexp.QuoteMeta(`INSERT INTO jobs`)).
		WithArgs("1", "1", "Original Job", "Desc", 1000.0, 2000.0, "monthly", "full-time", "remote", "8h", "Remote", 1, 1, nil, nil, false, "native", "draft", false, sqlmock.AnyArg(), sqlmock.AnyArg()).
		WillReturnRows(sqlmock.NewRows([]string{"id"}).AddRow(101))

	// Request
	req := httptest.NewRequest(http.MethodPost, "/api/v1/admin/jobs/100/duplicate", nil)

	req.SetPathValue("id", "100")

	rec := httptest.NewRecorder()

	handlers.DuplicateJob(rec, req)

	if rec.Code != http.StatusCreated {
		t.Errorf("Expected status %d, got %d. Body: %s", http.StatusCreated, rec.Code, rec.Body.String())
	}

}

func TestAdminHandlers_ListAccessRoles(t *testing.T) {
	handlers := handlers.NewAdminHandlers(nil, nil, nil, nil)

	req := httptest.NewRequest(http.MethodGet, "/api/v1/admin/roles", nil)
	rec := httptest.NewRecorder()

	handlers.ListAccessRoles(rec, req)

	if rec.Code != http.StatusOK {
		t.Errorf("Expected status %d, got %d", http.StatusOK, rec.Code)
	}

	var roles []struct {
		Role        string   `json:"role"`
		Description string   `json:"description"`
		Actions     []string `json:"actions"`
	}
	if err := json.NewDecoder(rec.Body).Decode(&roles); err != nil {
		t.Fatalf("Failed to decode response: %v", err)
	}

	if len(roles) == 0 {
		t.Error("Expected roles, got empty list")
	}
}

func TestAdminHandlers_ListTags(t *testing.T) {
	db, mock, err := sqlmock.New()
	if err != nil {
		t.Fatalf("an error '%s' was not expected when opening a stub database connection", err)
	}
	defer db.Close()

	handlers := createTestAdminHandlers(t, db)

	// Mock ListTags Query
	rows := sqlmock.NewRows([]string{"id", "name", "category", "active", "created_at", "updated_at"}).
		AddRow(1, "Java", "skill", true, time.Now(), time.Now()).
		AddRow(2, "Remote", "benefit", true, time.Now(), time.Now())

	mock.ExpectQuery(regexp.QuoteMeta(`SELECT id, name, category, active, created_at, updated_at FROM job_tags`)).
		WillReturnRows(rows)

	req := httptest.NewRequest(http.MethodGet, "/api/v1/admin/tags", nil)
	rec := httptest.NewRecorder()

	handlers.ListTags(rec, req)

	if rec.Code != http.StatusOK {
		t.Errorf("Expected status %d, got %d", http.StatusOK, rec.Code)

	}
}