Files
KanzlAI-mGMT/backend/internal/handlers/helpers.go
m 42a62d45bf feat: add deadline CRUD, calculator, and holiday services (Phase 1C)
- Holiday service with German federal holidays, Easter calculation, DB loading
- Deadline calculator adapted from youpc.org (duration calc + non-working day adjustment)
- Deadline CRUD service (tenant-scoped: list, create, update, complete, delete)
- Deadline rule service (list, filter by proceeding type, hierarchical rule trees)
- HTTP handlers for all endpoints with tenant resolution via X-Tenant-ID header
- Router wired with all new endpoints under /api/
- Tests for holiday and calculator services (8 passing)
2026-03-25 13:31:29 +01:00

86 lines
2.4 KiB
Go

package handlers
import (
"encoding/json"
"net/http"
"github.com/google/uuid"
"github.com/jmoiron/sqlx"
"mgit.msbls.de/m/KanzlAI-mGMT/internal/auth"
)
func writeJSON(w http.ResponseWriter, status int, v any) {
w.Header().Set("Content-Type", "application/json")
w.WriteHeader(status)
json.NewEncoder(w).Encode(v)
}
func writeError(w http.ResponseWriter, status int, msg string) {
writeJSON(w, status, map[string]string{"error": msg})
}
// resolveTenant gets the tenant ID for the authenticated user.
// Checks X-Tenant-ID header first, then falls back to user's first tenant.
func resolveTenant(r *http.Request, db *sqlx.DB) (uuid.UUID, error) {
userID, ok := auth.UserFromContext(r.Context())
if !ok {
return uuid.Nil, errUnauthorized
}
// Check header first
if headerVal := r.Header.Get("X-Tenant-ID"); headerVal != "" {
tenantID, err := uuid.Parse(headerVal)
if err != nil {
return uuid.Nil, errInvalidTenant
}
// Verify user has access to this tenant
var count int
err = db.Get(&count,
`SELECT COUNT(*) FROM user_tenants WHERE user_id = $1 AND tenant_id = $2`,
userID, tenantID)
if err != nil || count == 0 {
return uuid.Nil, errTenantAccess
}
return tenantID, nil
}
// Fall back to user's first tenant
var tenantID uuid.UUID
err := db.Get(&tenantID,
`SELECT tenant_id FROM user_tenants WHERE user_id = $1 ORDER BY created_at LIMIT 1`,
userID)
if err != nil {
return uuid.Nil, errNoTenant
}
return tenantID, nil
}
type apiError struct {
msg string
status int
}
func (e *apiError) Error() string { return e.msg }
var (
errUnauthorized = &apiError{msg: "unauthorized", status: http.StatusUnauthorized}
errInvalidTenant = &apiError{msg: "invalid tenant ID", status: http.StatusBadRequest}
errTenantAccess = &apiError{msg: "no access to tenant", status: http.StatusForbidden}
errNoTenant = &apiError{msg: "no tenant found for user", status: http.StatusBadRequest}
)
// handleTenantError writes the appropriate error response for tenant resolution errors
func handleTenantError(w http.ResponseWriter, err error) {
if ae, ok := err.(*apiError); ok {
writeError(w, ae.status, ae.msg)
return
}
writeError(w, http.StatusInternalServerError, "internal error")
}
// parsePathUUID extracts a UUID from the URL path using PathValue
func parsePathUUID(r *http.Request, key string) (uuid.UUID, error) {
return uuid.Parse(r.PathValue(key))
}