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param name string
param location string
param resourceToken string
@secure()
param databasePassword string
param tags object

var prefix = '${name}-${resourceToken}'

var pgServerName = '${prefix}-postgres-server'
var databaseSubnetName = 'database-subnet'
var webappSubnetName = 'webapp-subnet'

resource virtualNetwork 'Microsoft.Network/virtualNetworks@2019-11-01' = {
  name: '${prefix}-vnet'
  location: location
  tags: tags
  properties: {
    addressSpace: {
      addressPrefixes: [
        '10.0.0.0/16'
      ]
    }
    subnets: [
      {
        name: databaseSubnetName
        properties: {
          addressPrefix: '10.0.0.0/24'
          delegations: [
            {
              name: '${prefix}-subnet-delegation'
              properties: {
                serviceName: 'Microsoft.DBforPostgreSQL/flexibleServers'
              }
            }
          ]
        }
      }
      {
        name: webappSubnetName
        properties: {
          addressPrefix: '10.0.1.0/24'
          delegations: [
            {
              name: '${prefix}-subnet-delegation-web'
              properties: {
                serviceName: 'Microsoft.Web/serverFarms'
              }
            }
          ]
        }
      }
    ]
  }
  resource databaseSubnet 'subnets' existing = {
    name: databaseSubnetName
  }
  resource webappSubnet 'subnets' existing = {
    name: webappSubnetName
  }
}

resource privateDnsZone 'Microsoft.Network/privateDnsZones@2020-06-01' = {
  name: '${pgServerName}.private.postgres.database.azure.com'
  location: 'global'
  tags: tags
  dependsOn: [
    virtualNetwork
  ]
}

resource privateDnsZoneLink 'Microsoft.Network/privateDnsZones/virtualNetworkLinks@2020-06-01' = {
  parent: privateDnsZone
  name: '${pgServerName}-link'
  location: 'global'
  properties: {
    registrationEnabled: false
    virtualNetwork: {
      id: virtualNetwork.id
    }
  }
}

resource web 'Microsoft.Web/sites@2022-03-01' = {
  name: '${prefix}-app-service'
  location: location
  tags: union(tags, { 'azd-service-name': 'web' })
  kind: 'app,linux'
  properties: {
    serverFarmId: appServicePlan.id
    siteConfig: {
      alwaysOn: true
      linuxFxVersion: 'PYTHON|3.10'
      ftpsState: 'Disabled'
      appCommandLine: 'python manage.py migrate'
    }
    httpsOnly: true
  }
  identity: {
    type: 'SystemAssigned'
  }

  resource appSettings 'config' = {
    name: 'appsettings'
    properties: {
      DBHOST: postgresServer.name
      DBNAME: djangoDatabase.name
      DBUSER: postgresServer.properties.administratorLogin
      DBPASS: databasePassword
      SCM_DO_BUILD_DURING_DEPLOYMENT: 'true'
    }
  }

  resource logs 'config' = {
    name: 'logs'
    properties: {
      applicationLogs: {
        fileSystem: {
          level: 'Verbose'
        }
      }
      detailedErrorMessages: {
        enabled: true
      }
      failedRequestsTracing: {
        enabled: true
      }
      httpLogs: {
        fileSystem: {
          enabled: true
          retentionInDays: 1
          retentionInMb: 35
        }
      }
    }
  }

  resource webappVnetConfig 'networkConfig' = {
    name: 'virtualNetwork'
    properties: {
      subnetResourceId: virtualNetwork::webappSubnet.id
    }
  }

  dependsOn: [virtualNetwork]

}

resource appServicePlan 'Microsoft.Web/serverfarms@2021-03-01' = {
  name: '${prefix}-service-plan'
  location: location
  tags: tags
  sku: {
    name: 'B1'
  }
  properties: {
    reserved: true
  }
}

resource logAnalyticsWorkspace 'Microsoft.OperationalInsights/workspaces@2020-03-01-preview' = {
  name: '${prefix}-workspace'
  location: location
  tags: tags
  properties: any({
    retentionInDays: 30
    features: {
      searchVersion: 1
    }
    sku: {
      name: 'PerGB2018'
    }
  })
}

resource postgresServer 'Microsoft.DBforPostgreSQL/flexibleServers@2022-01-20-preview' = {
  location: location
  tags: tags
  name: pgServerName
  sku: {
    name: 'Standard_D2ds_v4'
    tier: 'GeneralPurpose'
  }
  properties: {
    version: '13'
    administratorLogin: 'django'
    administratorLoginPassword: databasePassword
    availabilityZone: '1'
    storage: {
      storageSizeGB: 128
    }
    backup: {
      backupRetentionDays: 7
      geoRedundantBackup: 'Disabled'
    }
    network: {
      delegatedSubnetResourceId: virtualNetwork::databaseSubnet.id
      privateDnsZoneArmResourceId: privateDnsZone.id
    }
    highAvailability: {
      mode: 'Disabled'
    }
    maintenanceWindow: {
      customWindow: 'Disabled'
      dayOfWeek: 0
      startHour: 0
      startMinute: 0
    }
  }

  dependsOn: [
    privateDnsZoneLink
  ]
}


resource djangoDatabase 'Microsoft.DBforPostgreSQL/flexibleServers/databases@2022-01-20-preview' = {
  parent: postgresServer
  name: 'django'
}

output WEB_URI string = 'https://${web.properties.defaultHostName}'