96 lines
3.1 KiB
Go
96 lines
3.1 KiB
Go
package postgres
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import (
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"context"
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"database/sql"
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"git.gobha.me/xcaliber/chat-switchboard/models"
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"github.com/lib/pq"
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)
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// ── ResourceGrantStore ──────────────────────
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type ResourceGrantStore struct{}
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func NewResourceGrantStore() *ResourceGrantStore { return &ResourceGrantStore{} }
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// Set creates or replaces the grant for a resource (upsert on unique resource_type+resource_id).
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func (s *ResourceGrantStore) Set(ctx context.Context, grant *models.ResourceGrant) error {
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// Coalesce nil to empty slice — pq.Array(nil) produces SQL NULL, but column expects array.
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groups := grant.GrantedGroups
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if groups == nil {
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groups = []string{}
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}
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return DB.QueryRowContext(ctx, `
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INSERT INTO resource_grants (resource_type, resource_id, grant_scope, granted_groups, created_by)
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VALUES ($1, $2, $3, $4, $5)
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ON CONFLICT (resource_type, resource_id) DO UPDATE SET
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grant_scope = EXCLUDED.grant_scope,
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granted_groups = EXCLUDED.granted_groups,
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created_by = EXCLUDED.created_by
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RETURNING id, created_at, updated_at`,
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grant.ResourceType, grant.ResourceID, grant.GrantScope,
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pq.Array(groups), grant.CreatedBy,
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).Scan(&grant.ID, &grant.CreatedAt, &grant.UpdatedAt)
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}
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// Get retrieves the grant for a specific resource.
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func (s *ResourceGrantStore) Get(ctx context.Context, resourceType, resourceID string) (*models.ResourceGrant, error) {
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var rg models.ResourceGrant
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err := DB.QueryRowContext(ctx, `
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SELECT id, resource_type, resource_id, grant_scope, granted_groups, created_by,
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created_at, updated_at
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FROM resource_grants
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WHERE resource_type = $1 AND resource_id = $2`,
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resourceType, resourceID,
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).Scan(&rg.ID, &rg.ResourceType, &rg.ResourceID, &rg.GrantScope,
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pq.Array(&rg.GrantedGroups), &rg.CreatedBy,
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&rg.CreatedAt, &rg.UpdatedAt)
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if err != nil {
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return nil, err
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}
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return &rg, nil
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}
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// Delete removes the grant for a resource.
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func (s *ResourceGrantStore) Delete(ctx context.Context, resourceType, resourceID string) error {
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res, err := DB.ExecContext(ctx,
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"DELETE FROM resource_grants WHERE resource_type = $1 AND resource_id = $2",
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resourceType, resourceID)
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if err != nil {
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return err
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}
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if n, _ := res.RowsAffected(); n == 0 {
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return sql.ErrNoRows
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}
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return nil
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}
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// UserHasGroupAccess checks whether a user has group-based access to a resource.
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// Returns true if:
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// - The resource has grant_scope='global', OR
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// - The resource has grant_scope='groups' and the user is in at least one
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// of the granted_groups.
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func (s *ResourceGrantStore) UserHasGroupAccess(ctx context.Context, userID, resourceType, resourceID string) (bool, error) {
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var has bool
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err := DB.QueryRowContext(ctx, `
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SELECT EXISTS(
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SELECT 1 FROM resource_grants rg
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WHERE rg.resource_type = $1
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AND rg.resource_id = $2
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AND (
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rg.grant_scope = 'global'
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OR (
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rg.grant_scope = 'groups'
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AND EXISTS (
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SELECT 1 FROM group_members gm
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WHERE gm.user_id = $3
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AND gm.group_id = ANY(rg.granted_groups)
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)
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)
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)
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)`, resourceType, resourceID, userID).Scan(&has)
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return has, err
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}
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