option to disable colors in output

.gitignore

@@ -2,4 +2,5 @@ __pycache__/
 ENV
 api/config/dbconfig.ini
 api/config/authservice.pub
+cli/config/dbconfig.ini
 

api/additional_components.yaml

@@ -0,0 +1,30 @@
+# -------------------------------------------------------------------
+# ATTENTION: This file will not be parsed by Cheetah
+#            Use plain openapi/yaml syntax, no Cheetah
+#            escaping
+# -------------------------------------------------------------------
+
+
+
+    tenant_with_saldo:
+      description: tenant with saldo
+      type: object
+      properties:
+        id:
+          type: integer
+        salutation:
+          type: string
+          nullable: true
+        firstname:
+          type: string
+          nullable: true
+        lastname:
+          type: string
+          nullable: true
+        address1:
+          type: string
+          nullable: true
+        saldo:
+          type: number
+          nullable: true
+          

api/additional_endpoints.yaml

@@ -72,4 +72,20 @@
                     type: number
       security:
       - jwt: ['secret']
+  /v1/tenants/saldo:
+    get:
+      tags: [ "tenant", "account" ]
+      summary: Return tenant with saldo of the account
+      operationId: additional_methods.get_tenant_with_saldo
+      responses:
+        '200':
+          description: get_tenant_with_saldo
+          content:
+            'application/json':
+              schema:
+                type: array
+                items:
+                  $ref: '#/components/schemas/tenant_with_saldo'
+      security:
+      - jwt: ['secret']
 

api/additional_methods.py

@@ -31,4 +31,15 @@ def get_account_saldo(user, token_info, accountId=None):
             "statement": "SELECT sum(amount) as saldo FROM account_entry_t WHERE account=%s",
             "params": (accountId, )
         }
-    )
+    )
+
+def get_tenant_with_saldo(user, token_info):
+    return dbGetMany(user, token_info, {
+            "statement": """
+                             SELECT t.id, t.firstname, t.lastname, t.address1, sum(a.amount) AS saldo 
+                               FROM tenant_t t LEFT OUTER JOIN account_entry_t a ON a.account = t.account 
+                               GROUP BY t.id, t.firstname, t.lastname, t.address1
+                         """, 
+            "params": ()
+        }
+    )

api/openapi.yaml

@@ -1493,6 +1493,22 @@ paths:
                     type: number
       security:
       - jwt: ['secret']
+  /v1/tenants/saldo:
+    get:
+      tags: [ "tenant", "account" ]
+      summary: Return tenant with saldo of the account
+      operationId: additional_methods.get_tenant_with_saldo
+      responses:
+        '200':
+          description: get_tenant_with_saldo
+          content:
+            'application/json':
+              schema:
+                type: array
+                items:
+                  $ref: '#/components/schemas/tenant_with_saldo'
+      security:
+      - jwt: ['secret']
 
 
 components:
@@ -1727,3 +1743,34 @@ components:
           type: integer
         note:
           type: string
+
+# -------------------------------------------------------------------
+# ATTENTION: This file will not be parsed by Cheetah
+#            Use plain openapi/yaml syntax, no Cheetah
+#            escaping
+# -------------------------------------------------------------------
+
+
+
+    tenant_with_saldo:
+      description: tenant with saldo
+      type: object
+      properties:
+        id:
+          type: integer
+        salutation:
+          type: string
+          nullable: true
+        firstname:
+          type: string
+          nullable: true
+        lastname:
+          type: string
+          nullable: true
+        address1:
+          type: string
+          nullable: true
+        saldo:
+          type: number
+          nullable: true
+          

api/openapi.yaml.tmpl

@@ -156,3 +156,5 @@ components:
 #end if
 #end for
 #end for          
+
+#include raw "./api/additional_components.yaml"

cli/ConsistencyCheck.py

@@ -0,0 +1,126 @@
+from db import dbGetMany
+from loguru import logger
+
+errorCnt = 0
+
+def perform(dbh, params):
+    global errorCnt
+    checkTenant(dbh, params)
+    checkFlats(dbh, params)
+    checkParkings(dbh, params)
+    checkCommercialPremise(dbh, params)
+
+    if (errorCnt > 0):
+        logger.error(f"Total error count: {errorCnt}")
+
+def checkTenant(dbh, params):
+    global errorCnt
+    tenants = dbGetMany(dbh, { "statement": "SELECT * FROM tenant_t", "params": () })
+    for tenant in tenants:
+        outPre = f"Tenant: {tenant['firstname']} {tenant['lastname']}"
+        logger.info(outPre)
+
+        # check tenancies
+        tenancyCnt = 0
+        flatTenancyCnt = 0
+        tenancies = dbGetMany(dbh, { 
+                "statement": "SELECT * FROM tenancy_t WHERE tenant = %s AND startdate < now() AND (enddate > now() or enddate is null)", 
+                "params": (tenant['id'], )
+            }
+        )
+        for tenancy in tenancies:
+            tenancyCnt += 1
+            if (tenancy['flat']):
+                flatTenancyCnt += 1
+                logger.info(f"{outPre}: Flat tenancy: {tenancy['id']}, start: {tenancy['startdate']}, end: {tenancy['enddate']}")
+            if (tenancy['parking']):
+                logger.info(f"{outPre}: Garage tenancy: {tenancy['id']}, start: {tenancy['startdate']}, end: {tenancy['enddate']}")
+            if (tenancy['commercial_premise']):
+                logger.info(f"{outPre}: Commercial premise tenancy: {tenancy['id']}, start: {tenancy['startdate']}, end: {tenancy['enddate']}")
+
+        if (flatTenancyCnt == 0):
+            logger.warning(f"{outPre}: no flat tenancy")
+        if (flatTenancyCnt > 1):
+            logger.warning(f"{outPre}: more than one flat tenancy ({flatTenancyCnt})")
+        if (tenancyCnt == 0):
+            logger.error(f"{outPre}: no tenancy at all")
+            errorCnt += 1
+            noCurrentTenancies = dbGetMany(dbh, {
+                    "statement": "SELECT * FROM tenancy_t WHERE tenant = %s",
+                    "params": (tenant['id'], )
+                }
+            )
+            for noCurrentTenancy in noCurrentTenancies:
+                logger.error(f"{outPre}: but: flat {noCurrentTenancy['flat']}, parking: {noCurrentTenancy['parking']}, commercial premise: {noCurrentTenancy['commercial_premise']}, start: {noCurrentTenancy['startdate']}, end: {noCurrentTenancy['enddate']}")
+
+def _checkRentals(dbh, params, rentalType):
+    global errorCnt
+    table = f"{rentalType}_t"
+    rentals = dbGetMany(dbh, {
+            "statement": f"SELECT * FROM {table}",
+            "params": ()
+        }
+    )
+    for rental in rentals:
+        outPre = f"{rentalType}: {rental['description']}, premise: {rental['premise']}"
+        logger.info(outPre)
+
+        if (rentalType == 'flat'):
+            overheadMappingCnt = 0
+            overheadMappings = dbGetMany(dbh, {
+                    "statement": "SELECT * FROM overhead_advance_flat_mapping_t WHERE flat = %s",
+                    "params": (rental['id'], )
+                }
+            )
+            for overheadMapping in overheadMappings:
+                overheadMappingCnt += 1
+                logger.info(f"{outPre}: overhead mapping: {overheadMapping['id']}")
+            if (overheadMappingCnt == 0):
+                errorCnt += 1
+                logger.error(f"{outPre}: no overhead mapping available")
+            if (overheadMappingCnt > 1):
+                errorCnt += 1
+                logger.error(f"{outPre}: more than one overhead mapping available")
+
+        tenancyCnt = 0
+        tenancies = dbGetMany(dbh, {
+                "statement": f"SELECT * FROM tenancy_t WHERE {rentalType} = %s AND startdate < now() AND (enddate > now() or enddate is null)",
+                "params": (rental['id'], )
+            }
+        )
+        for tenancy in tenancies:
+            tenancyCnt += 1
+            logger.info(f"{outPre}: tenant: {tenancy['tenant']}, start: {tenancy['startdate']}, end: {tenancy['enddate']}")
+
+            feeMappingCnt = 0
+            feeMappings = dbGetMany(dbh, {
+                    "statement": "SELECT * FROM tenancy_fee_mapping_t where tenancy = %s",
+                    "params": (tenancy['id'], )
+                }
+            )
+            for feeMapping in feeMappings:
+                feeMappingCnt += 1
+                logger.info(f"{outPre}: fee mapping: {feeMapping['id']}")
+            if (feeMappingCnt == 0):
+                errorCnt += 1
+                logger.error(f"{outPre}: no fee mapping available")
+            if (feeMappingCnt > 1):
+                errorCnt += 1
+                logger.error(f"{outPre}: more than one fee mapping available")
+
+        if (tenancyCnt == 0):
+            errorCnt += 1
+            logger.error(f"{outPre}: vacant")
+        if (tenancyCnt > 1):
+            errorCnt += 1
+            logger.error(f"{outPre}: overbooked")
+
+
+def checkFlats(dbh, params):
+    _checkRentals(dbh, params, "flat")
+
+def checkParkings(dbh, params):
+    _checkRentals(dbh, params, "parking")
+
+def checkCommercialPremise(dbh, params):
+    _checkRentals(dbh, params, "commercial_premise")    

cli/MonthlyPaymentRequests.py

@@ -0,0 +1,109 @@
+from db import dbGetMany, dbGetOne
+from loguru import logger
+from decimal import Decimal
+import datetime
+
+def perform(dbh, params):
+    try:
+        createdAt = params['created_at']
+    except KeyError:
+        createdAt = datetime.datetime.today().strftime("%Y-%m-%d")
+
+    tenants = dbGetMany(dbh, { "statement": "SELECT * FROM tenant_t", "params": () })
+    for tenant in tenants:
+        logger.info(f"Tenant: {tenant['firstname']} {tenant['lastname']}")
+
+        # check tenancies
+        tenancies = dbGetMany(dbh, { 
+                "statement": "SELECT * FROM tenancy_t WHERE tenant = %s AND startdate < now() AND (enddate > now() or enddate is null)", 
+                "params": (tenant['id'], )
+            }
+        )
+        requests = []
+        for tenancy in tenancies:
+            fee = dbGetOne(dbh, {
+                    "statement": """
+                                    SELECT f.amount, f.fee_type
+                                        FROM fee_t f, tenancy_fee_mapping_t t
+                                        WHERE t.tenancy = %s AND
+                                            f.id = t.fee AND
+                                            f.startdate < now() AND
+                                            (f.enddate > now() OR f.enddate is null)
+                                 """,
+                    "params": (tenancy['id'], )
+                }
+            )
+            if (tenancy['flat']):
+                logger.debug(f"   Flat tenancy: {tenancy['id']}, Fee: {fee['amount']}, Fee_Type: {fee['fee_type']}")
+                flat = dbGetOne(dbh, { "statement": "SELECT area FROM flat_t WHERE id = %s", "params": (tenancy['flat'], ) })
+                logger.debug(f"   Area: {flat['area']}")
+                if (fee['fee_type'] == 'per_area'):
+                    feeRequest = flat['area'] * fee['amount']
+                else:
+                    feeRequest = fee['amount']
+                feeRequest = feeRequest.quantize(Decimal('1.00'))
+                requests.append({ 
+                    'description': f"Miete {tenancy['description']}",
+                    'account': tenant['account'],
+                    'created_at': createdAt,
+                    'amount': feeRequest,
+                    'category': 'Mietforderung'
+                })
+                overheadAdvance = dbGetOne(dbh, {
+                        "statement": """
+                                        SELECT o.amount
+                                            FROM overhead_advance_t o, overhead_advance_flat_mapping_t m
+                                            WHERE m.flat = %s AND
+                                                o.id = m.overhead_advance AND
+                                                o.startdate < now() AND
+                                                (o.enddate > now() OR o.enddate is null)
+                                     """,
+                        "params": (tenancy['flat'], )
+                    }
+                )
+                overheadAdvanceRequest = flat['area'] * overheadAdvance['amount'] 
+                overheadAdvanceRequest = overheadAdvanceRequest.quantize(Decimal('1.00'))
+                requests.append({ 
+                    'description': f"Betriebskosten {tenancy['description']}",
+                    'account': tenant['account'],
+                    'created_at': createdAt,
+                    'amount': overheadAdvanceRequest,
+                    'category': 'Betriebskostenforderung'
+                })
+            if (tenancy['parking']):
+                logger.debug(f"   Garage tenancy: {tenancy['id']}, Fee: {fee['amount']}, Fee_Type: {fee['fee_type']}")
+                feeRequest = fee['amount']
+                feeRequest = feeRequest.quantize(Decimal('1.00'))
+                requests.append({ 
+                    'description': f"Miete {tenancy['description']}",
+                    'account': tenant['account'],
+                    'created_at': createdAt,
+                    'amount': feeRequest,
+                    'category': 'Mietforderung'
+                })
+            if (tenancy['commercial_premise']):
+                logger.debug(f"   Commercial premise tenancy: {tenancy['id']}, Fee: {fee['amount']}, Fee_Type: {fee['fee_type']}")
+                feeRequest = fee['amount']
+                feeRequest = feeRequest.quantize(Decimal('1.00'))
+                requests.append({ 
+                    'description': f"Miete {tenancy['description']}",
+                    'account': tenant['account'],
+                    'created_at': createdAt,
+                    'amount': feeRequest,
+                    'category': 'Mietforderung'
+                })
+
+        for request in requests:
+            request['amount'] = Decimal('-1.0') * request['amount']
+            logger.info(f"    {request['description']}, {request['account']}, {request['created_at']}, {request['amount']}, {request['category']}")
+            accountEntry = dbGetOne(dbh, {
+                    "statement": """
+                                    INSERT INTO account_entry_t 
+                                        (description, account, created_at, amount, account_entry_category)
+                                        VALUES (%s, %s, %s, %s, (SELECT id FROM account_entry_category_t WHERE description = %s))
+                                        RETURNING id
+                                 """,
+                    "params": (request['description'], request['account'], request['created_at'], request['amount'], request['category'])
+                }
+            )
+            logger.info(f"    account entry entered with id {accountEntry['id']}")

cli/db.py

@@ -0,0 +1,46 @@
+import psycopg2
+import psycopg2.extras
+from loguru import logger
+
+
+class NoDataFoundException(Exception): pass
+
+class TooMuchDataFoundException(Exception): pass
+
+
+def execDatabaseOperation(dbh, func, params):
+    cur = None
+    try:
+        with dbh.cursor(cursor_factory = psycopg2.extras.RealDictCursor) as cur:
+            params["params"] = [ v if not v=='' else None for v in params["params"] ]
+            logger.debug("edo: {}".format(str(params)))
+            return func(cur, params)
+    except psycopg2.Error as err:
+        raise Exception("Error when working on cursor: {}".format(err))
+
+
+
+def _opGetMany(cursor, params):
+    items = []
+    cursor.execute(params["statement"], params["params"])
+    for itemObj in cursor:
+        logger.debug("item received {}".format(str(itemObj)))
+        items.append(itemObj)
+    return items
+
+def dbGetMany(dbh, params):
+    return execDatabaseOperation(dbh, _opGetMany, params)
+
+def _opGetOne(cursor, params):
+    cursor.execute(params["statement"], params["params"])
+    itemObj = cursor.fetchone()
+    logger.debug(f"item received: {itemObj}")
+    if not itemObj:
+        raise NoDataFoundException
+    dummyObj = cursor.fetchone()
+    if dummyObj:
+        raise TooMuchDataFoundException
+    return itemObj
+
+def dbGetOne(dbh, params):
+    return execDatabaseOperation(dbh, _opGetOne, params)

cli/hv2cli.py

@@ -0,0 +1,77 @@
+import psycopg2
+import psycopg2.extras
+from loguru import logger
+import os
+import configparser
+import json
+import argparse
+import importlib
+import sys
+
+DB_USER = ""
+DB_PASS = ""
+DB_HOST = ""
+DB_NAME = ""
+try:
+    DB_USER = os.environ["DB_USER"]
+    DB_PASS = os.environ["DB_PASS"]
+    DB_HOST = os.environ["DB_HOST"]
+    DB_NAME = os.environ["DB_NAME"]
+except KeyError:
+    config = configparser.ConfigParser()
+    config.read('./config/dbconfig.ini')
+    DB_USER = config["database"]["user"]
+    DB_PASS = config["database"]["pass"]
+    DB_HOST = config["database"]["host"]
+    DB_NAME = config["database"]["name"]
+
+
+parser = argparse.ArgumentParser(description="hv2cli.py")
+parser.add_argument('--operation', '-o',
+                    help='Operation to perform.',
+                    required=True)
+parser.add_argument('--params', '-p',
+                    help='JSON string with parameter for the selected operation, default: {}',                    
+                    required=False,
+                    default="{}")
+parser.add_argument('--verbosity', '-v',
+                    help='Minimal log level for output: DEBUG, INFO, WARNING, ..., default: DEBUG',
+                    required=False,
+                    default="DEBUG")                    
+parser.add_argument('--nocolorize', '-n',
+                    help='disable colored output (for cron)',
+                    required=False,
+                    action='store_true',
+                    default=False)
+
+args = parser.parse_args()
+operation = args.operation
+params = json.loads(args.params)
+logLevel = args.verbosity
+noColorize = args.nocolorize
+
+
+logger.remove()
+logger.add(sys.stderr, colorize=(not noColorize), level=logLevel)
+
+
+dbh = None
+try:
+    opMod = importlib.import_module(operation)
+
+    dbh = psycopg2.connect(user = DB_USER, password = DB_PASS,
+                           host = DB_HOST, database = DB_NAME,
+                           sslmode = 'require')
+    dbh.autocommit = False
+
+    with dbh:
+        opMod.perform(dbh, params)
+except psycopg2.Error as err:
+    raise Exception("Error when working on the database: {}".format(err))
+except Exception as err:
+    raise err
+finally:
+    if dbh:
+        dbh.close()
+
+

cli/listTenants.py

@@ -0,0 +1,5 @@
+from db import dbGetMany
+
+def perform(dbh, params):
+    tenants = dbGetMany(dbh, { "statement": "SELECT * FROM tenant_t", "params": () })
+    print(tenants)

schema.json

@@ -133,7 +133,7 @@
             "name": "account_entry",
             "immutable": true,
             "columns": [
-                { "name": "description", "sqltype": "varchar(128)", "notnull": true },
+                { "name": "description", "sqltype": "varchar(1024)", "notnull": true },
                 { "name": "account", "sqltype": "integer", "notnull": true, "foreignkey": true },
                 { "name": "created_at", "sqltype": "timestamp", "notnull": true, "default": "now()" },
                 { "name": "amount", "sqltype": "numeric(10,2)", "notnull": true, "selector": 0 },

ui/hv2-ui/src/app/app-routing.module.ts

@@ -18,6 +18,7 @@ import { OverheadAdvanceDetailsComponent } from './overhead-advance-details/over
 import { FeeListComponent } from './fee-list/fee-list.component';
 import { FeeDetailsComponent } from './fee-details/fee-details.component';
 import { EnterPaymentComponent } from './enter-payment/enter-payment.component';
+import { HomeComponent } from './home/home.component';
 
 
 const routes: Routes = [
@@ -43,8 +44,10 @@ const routes: Routes = [
   { path: 'fee/:id', component: FeeDetailsComponent, canActivate: [ AuthGuardService ] },
   { path: 'fee', component: FeeDetailsComponent, canActivate: [ AuthGuardService ] },
   { path: 'enterPayment', component: EnterPaymentComponent, canActivate: [ AuthGuardService ] },
+  { path: 'home', component: HomeComponent },
   { path: 'logout', component: LogoutComponent },
-  { path: 'login', component: LoginComponent }
+  { path: 'login', component: LoginComponent },
+  { path: '', pathMatch: 'full', redirectTo: 'home' }
 ]
 
 @NgModule({

ui/hv2-ui/src/app/app.module.ts

@@ -46,7 +46,8 @@ import { MatExpansionModule } from '@angular/material/expansion';
 import { AccountComponent } from './account/account.component';
 import { NoteComponent } from './note/note.component'
 import { MatMomentDateModule, MAT_MOMENT_DATE_ADAPTER_OPTIONS } from '@angular/material-moment-adapter';
-import { EnterPaymentComponent } from './enter-payment/enter-payment.component'
+import { EnterPaymentComponent } from './enter-payment/enter-payment.component';
+import { HomeComponent } from './home/home.component'
 
 registerLocaleData(localeDe)
 
@@ -74,7 +75,8 @@ registerLocaleData(localeDe)
     FeeDetailsComponent,
     AccountComponent,
     NoteComponent,
-    EnterPaymentComponent
+    EnterPaymentComponent,
+    HomeComponent
   ],
   imports: [
     BrowserModule,

ui/hv2-ui/src/app/ext-data-object-service.ts

@@ -7,7 +7,7 @@ import { serviceBaseUrl } from './config';
 
 
 import { Fee, OverheadAdvance } from './data-objects';
-import { Saldo } from './ext-data-objects';
+import { Saldo, Tenant_with_Saldo } from './ext-data-objects';
 
 
 @Injectable({ providedIn: 'root' })
@@ -28,4 +28,9 @@ export class ExtApiService {
     this.messageService.add(`ExtApiService: get saldo for account ${id}`);
     return this.http.get<Saldo>(`${serviceBaseUrl}/v1/account/saldo/${id}`).toPromise()
   }
+
+  async getTenantsWithSaldo(): Promise<Tenant_with_Saldo[]> {
+    this.messageService.add("ExtApiService: get tenants with saldo");
+    return this.http.get<Tenant_with_Saldo[]>(`${serviceBaseUrl}/v1/tenants/saldo`).toPromise()
+  }
 }

ui/hv2-ui/src/app/ext-data-objects.ts

@@ -2,4 +2,11 @@
 export interface Saldo {
     saldo: number
 }
-  
+
+export interface Tenant_with_Saldo {
+    id: number
+    firstname: string
+    lastname: string
+    address1: string
+    saldo: number
+}

ui/hv2-ui/src/app/home/home.component.html

@@ -0,0 +1 @@
+<p>home works!</p>

ui/hv2-ui/src/app/home/home.component.spec.ts

@@ -0,0 +1,25 @@
+import { ComponentFixture, TestBed } from '@angular/core/testing';
+
+import { HomeComponent } from './home.component';
+
+describe('HomeComponent', () => {
+  let component: HomeComponent;
+  let fixture: ComponentFixture<HomeComponent>;
+
+  beforeEach(async () => {
+    await TestBed.configureTestingModule({
+      declarations: [ HomeComponent ]
+    })
+    .compileComponents();
+  });
+
+  beforeEach(() => {
+    fixture = TestBed.createComponent(HomeComponent);
+    component = fixture.componentInstance;
+    fixture.detectChanges();
+  });
+
+  it('should create', () => {
+    expect(component).toBeTruthy();
+  });
+});

ui/hv2-ui/src/app/home/home.component.ts

@@ -0,0 +1,15 @@
+import { Component, OnInit } from '@angular/core';
+
+@Component({
+  selector: 'app-home',
+  templateUrl: './home.component.html',
+  styleUrls: ['./home.component.css']
+})
+export class HomeComponent implements OnInit {
+
+  constructor() { }
+
+  ngOnInit(): void {
+  }
+
+}

ui/hv2-ui/src/app/my-tenants/my-tenants.component.html

@@ -22,6 +22,10 @@
                         <th mat-header-cell *matHeaderCellDef>Adresse 1</th>
                         <td mat-cell *matCellDef="let element">{{element.address1}}</td>
                     </ng-container>
+                    <ng-container matColumnDef="saldo">
+                        <th mat-header-cell *matHeaderCellDef>Saldo</th>
+                        <td mat-cell *matCellDef="let element">{{element.saldo | number:'1.2-2'}} €</td>
+                    </ng-container>
                     <tr mat-header-row *matHeaderRowDef="displayedColumns"></tr>
                     <tr mat-row *matRowDef="let row; columns: displayedColumns;" [routerLink]="['/tenant/', row.id]"></tr>
                 </table>

ui/hv2-ui/src/app/my-tenants/my-tenants.component.ts

@@ -3,6 +3,9 @@ import { MessageService } from '../message.service';
 import { TenantService } from '../data-object-service';
 import { Tenant } from '../data-objects';
 import { MatTableDataSource } from '@angular/material/table'
+import { Tenant_with_Saldo } from '../ext-data-objects';
+import { ExtApiService } from '../ext-data-object-service';
+
 
 @Component({
   selector: 'app-my-tenants',
@@ -11,19 +14,22 @@ import { MatTableDataSource } from '@angular/material/table'
 })
 export class MyTenantsComponent implements OnInit {
 
-  tenants: Tenant[]
-  dataSource: MatTableDataSource<Tenant>
-  displayedColumns: string[] = ["lastname", "firstname", "address1"]
+  tenants: Tenant_with_Saldo[]
+  dataSource: MatTableDataSource<Tenant_with_Saldo>
+  displayedColumns: string[] = ["lastname", "firstname", "address1", "saldo"]
 
-  constructor(private tenantService: TenantService, private messageService: MessageService) { }
+  constructor(
+    private extApiService: ExtApiService,
+    private messageService: MessageService
+  ) { }
 
   async getTenants(): Promise<void> {
     try {
       this.messageService.add("Trying to load tenants")
-      this.tenants = await this.tenantService.getTenants()
+      this.tenants = await this.extApiService.getTenantsWithSaldo()
       this.messageService.add("Tenants loaded")
 
-      this.dataSource = new MatTableDataSource<Tenant>(this.tenants)
+      this.dataSource = new MatTableDataSource<Tenant_with_Saldo>(this.tenants)
     } catch (err) {
       this.messageService.add(JSON.stringify(err, undefined, 4))
     }

ui/hv2-ui/src/app/tenant-details/tenant-details.component.ts

@@ -90,11 +90,18 @@ export class TenantDetailsComponent implements OnInit {
   async getTenant(): Promise<void> {
     try {
       const id = +this.route.snapshot.paramMap.get('id')
+      this.messageService.add(`getTenant, id=${id}`)
       if (id != 0) {
+        this.messageService.add("getTenant, not-0-branch")
         this.tenantId = id
         this.tenant = await this.tenantService.getTenant(id)
         this.account = await this.accountService.getAccount(this.tenant.account)
         this.getTenancies()
+      } else {
+        this.messageService.add("getTenant, 0-branch")
+        this.tenant = NULL_Tenant
+        this.account = NULL_Account
+        this.tenancies = []
       }
     } catch (err) {
       this.messageService.add(JSON.stringify(err, undefined, 4))