package service

import (
	"context"
	"omega-server/local/model"
	"omega-server/local/service"
)

// GraphQLService provides GraphQL-specific business logic
type GraphQLService struct {
	membershipService *service.MembershipService
}

// NewGraphQLService creates a new GraphQL service
func NewGraphQLService(membershipService *service.MembershipService) *GraphQLService {
	return &GraphQLService{
		membershipService: membershipService,
	}
}

// AuthResponse represents authentication response
type AuthResponse struct {
	Token string      `json:"token"`
	User  *model.User `json:"user"`
}

// MessageResponse represents a generic message response
type MessageResponse struct {
	Message string `json:"message"`
	Success bool   `json:"success"`
}

// Login handles user authentication
func (s *GraphQLService) Login(ctx context.Context, email, password string) (*AuthResponse, error) {
	token, err := s.membershipService.Login(ctx, email, password)
	if err != nil {
		return nil, err
	}

	// For now, return a mock user. In a full implementation, we'd get the user from the token
	user := &model.User{
		BaseModel: model.BaseModel{
			ID: "mock-user-id",
		},
		Email:    email,
		FullName: "Mock User",
	}

	return &AuthResponse{
		Token: token,
		User:  user,
	}, nil
}

// CreateUser handles user creation
func (s *GraphQLService) CreateUser(ctx context.Context, email, password, fullName string) (*model.User, error) {
	// Create domain model
	user := &model.User{
		Email:    email,
		FullName: fullName,
	}

	if err := user.SetPassword(password); err != nil {
		return nil, err
	}

	return s.membershipService.CreateUser(ctx, user, []string{"user"})
}

// GetUsers retrieves all users
func (s *GraphQLService) GetUsers(ctx context.Context) ([]*model.User, error) {
	return s.membershipService.ListUsers(ctx)
}

// GetUser retrieves a specific user by ID
func (s *GraphQLService) GetUser(ctx context.Context, id string) (*model.User, error) {
	// This would need to be implemented in the membership service
	// For now, return a mock user
	return &model.User{
		BaseModel: model.BaseModel{
			ID: id,
		},
		Email:    "mock@example.com",
		FullName: "Mock User",
	}, nil
}

// GetMe retrieves the current authenticated user
func (s *GraphQLService) GetMe(ctx context.Context, userID string) (*model.User, error) {
	// This would typically extract user ID from JWT token
	// For now, return a mock user
	return &model.User{
		BaseModel: model.BaseModel{
			ID: userID,
		},
		Email:    "current@example.com",
		FullName: "Current User",
	}, nil
}

// CreateProject handles project creation
func (s *GraphQLService) CreateProject(ctx context.Context, name, description, ownerID string) (*model.Project, error) {
	// This would need to be implemented when we have project service
	// For now, return a mock project
	return &model.Project{
		BaseModel: model.BaseModel{
			ID: "mock-project-id",
		},
		Name:        name,
		Description: description,
		OwnerID:     ownerID,
	}, nil
}

// GetProjects retrieves all projects
func (s *GraphQLService) GetProjects(ctx context.Context) ([]*model.Project, error) {
	// This would need to be implemented when we have project service
	// For now, return empty slice
	return []*model.Project{}, nil
}

// GetProject retrieves a specific project by ID
func (s *GraphQLService) GetProject(ctx context.Context, id string) (*model.Project, error) {
	// This would need to be implemented when we have project service
	// For now, return a mock project
	return &model.Project{
		BaseModel: model.BaseModel{
			ID: id,
		},
		Name:        "Mock Project",
		Description: "Mock project description",
		OwnerID:     "mock-owner-id",
	}, nil
}

// CreateTask handles task creation
func (s *GraphQLService) CreateTask(ctx context.Context, title, description, status, priority, projectID string) (*model.Task, error) {
	// This would need to be implemented when we have task service
	// For now, return a mock task
	return &model.Task{
		BaseModel: model.BaseModel{
			ID: "mock-task-id",
		},
		Title:       title,
		Description: description,
		Status:      model.TaskStatus(status),
		Priority:    model.TaskPriority(priority),
		ProjectID:   projectID,
	}, nil
}

// GetTasks retrieves tasks, optionally filtered by project ID
func (s *GraphQLService) GetTasks(ctx context.Context, projectID *string) ([]*model.Task, error) {
	// This would need to be implemented when we have task service
	// For now, return empty slice
	return []*model.Task{}, nil
}

// GetTask retrieves a specific task by ID
func (s *GraphQLService) GetTask(ctx context.Context, id string) (*model.Task, error) {
	// This would need to be implemented when we have task service
	// For now, return a mock task
	return &model.Task{
		BaseModel: model.BaseModel{
			ID: id,
		},
		Title:       "Mock Task",
		Description: "Mock task description",
		Status:      model.TaskStatusTodo,
		Priority:    model.TaskPriorityMedium,
		ProjectID:   "mock-project-id",
	}, nil
}