package postgres

import (
	"context"

	"github.com/google/uuid"
	"github.com/kms/api-key-service/internal/domain"
	"github.com/kms/api-key-service/internal/repository"
)

// PermissionRepository implements the PermissionRepository interface for PostgreSQL
type PermissionRepository struct {
	db repository.DatabaseProvider
}

// NewPermissionRepository creates a new PostgreSQL permission repository
func NewPermissionRepository(db repository.DatabaseProvider) repository.PermissionRepository {
	return &PermissionRepository{db: db}
}

// CreateAvailablePermission creates a new available permission
func (r *PermissionRepository) CreateAvailablePermission(ctx context.Context, permission *domain.AvailablePermission) error {
	// TODO: Implement actual permission creation
	return nil
}

// GetAvailablePermission retrieves an available permission by ID
func (r *PermissionRepository) GetAvailablePermission(ctx context.Context, permissionID uuid.UUID) (*domain.AvailablePermission, error) {
	// TODO: Implement actual permission retrieval
	return nil, nil
}

// GetAvailablePermissionByScope retrieves an available permission by scope
func (r *PermissionRepository) GetAvailablePermissionByScope(ctx context.Context, scope string) (*domain.AvailablePermission, error) {
	// TODO: Implement actual permission retrieval by scope
	return nil, nil
}

// ListAvailablePermissions retrieves available permissions with pagination and filtering
func (r *PermissionRepository) ListAvailablePermissions(ctx context.Context, category string, includeSystem bool, limit, offset int) ([]*domain.AvailablePermission, error) {
	// TODO: Implement actual permission listing
	return []*domain.AvailablePermission{}, nil
}

// UpdateAvailablePermission updates an available permission
func (r *PermissionRepository) UpdateAvailablePermission(ctx context.Context, permissionID uuid.UUID, permission *domain.AvailablePermission) error {
	// TODO: Implement actual permission update
	return nil
}

// DeleteAvailablePermission deletes an available permission
func (r *PermissionRepository) DeleteAvailablePermission(ctx context.Context, permissionID uuid.UUID) error {
	// TODO: Implement actual permission deletion
	return nil
}

// ValidatePermissionScopes checks if all given scopes exist and are valid
func (r *PermissionRepository) ValidatePermissionScopes(ctx context.Context, scopes []string) ([]string, error) {
	// TODO: Implement actual scope validation
	// For now, assume all scopes are valid
	return []string{}, nil
}

// GetPermissionHierarchy returns all parent and child permissions for given scopes
func (r *PermissionRepository) GetPermissionHierarchy(ctx context.Context, scopes []string) ([]*domain.AvailablePermission, error) {
	// TODO: Implement actual permission hierarchy retrieval
	return []*domain.AvailablePermission{}, nil
}

// GrantedPermissionRepository implements the GrantedPermissionRepository interface for PostgreSQL
type GrantedPermissionRepository struct {
	db repository.DatabaseProvider
}

// NewGrantedPermissionRepository creates a new PostgreSQL granted permission repository
func NewGrantedPermissionRepository(db repository.DatabaseProvider) repository.GrantedPermissionRepository {
	return &GrantedPermissionRepository{db: db}
}

// GrantPermissions grants multiple permissions to a token
func (r *GrantedPermissionRepository) GrantPermissions(ctx context.Context, grants []*domain.GrantedPermission) error {
	// TODO: Implement actual permission granting
	return nil
}

// GetGrantedPermissions retrieves all granted permissions for a token
func (r *GrantedPermissionRepository) GetGrantedPermissions(ctx context.Context, tokenType domain.TokenType, tokenID uuid.UUID) ([]*domain.GrantedPermission, error) {
	// TODO: Implement actual granted permissions retrieval
	return []*domain.GrantedPermission{}, nil
}

// GetGrantedPermissionScopes retrieves only the scopes for a token (more efficient)
func (r *GrantedPermissionRepository) GetGrantedPermissionScopes(ctx context.Context, tokenType domain.TokenType, tokenID uuid.UUID) ([]string, error) {
	// TODO: Implement actual scope retrieval
	return []string{}, nil
}

// RevokePermission revokes a specific permission from a token
func (r *GrantedPermissionRepository) RevokePermission(ctx context.Context, grantID uuid.UUID, revokedBy string) error {
	// TODO: Implement actual permission revocation
	return nil
}

// RevokeAllPermissions revokes all permissions from a token
func (r *GrantedPermissionRepository) RevokeAllPermissions(ctx context.Context, tokenType domain.TokenType, tokenID uuid.UUID, revokedBy string) error {
	// TODO: Implement actual permission revocation
	return nil
}

// HasPermission checks if a token has a specific permission
func (r *GrantedPermissionRepository) HasPermission(ctx context.Context, tokenType domain.TokenType, tokenID uuid.UUID, scope string) (bool, error) {
	// TODO: Implement actual permission checking
	return true, nil
}

// HasAnyPermission checks if a token has any of the specified permissions
func (r *GrantedPermissionRepository) HasAnyPermission(ctx context.Context, tokenType domain.TokenType, tokenID uuid.UUID, scopes []string) (map[string]bool, error) {
	// TODO: Implement actual permission checking
	result := make(map[string]bool)
	for _, scope := range scopes {
		result[scope] = true
	}
	return result, nil
}