!include https://raw.githubusercontent.com/plantuml-stdlib/C4-PlantUML/master/C4_Context.puml
' uncomment the following line and comment the first to use locally
' !include C4_Context.puml

' Scope: A single software system.
' Primary elements: Containers within the software system in scope.
' Supporting elements: People and software systems directly connected to the containers.
' Intended audience: Technical people inside and outside of the software development team; including software architects, developers and operations/support staff.

' Colors
' ##################################

!global $CONTAINER_BG_COLOR = "#438DD5"
!global $CONTAINER_BORDER_COLOR = "#3C7FC0"
!global $EXTERNAL_CONTAINER_BG_COLOR = "#B3B3B3"
!global $EXTERNAL_CONTAINER_BORDER_COLOR = "#A6A6A6"

' Styling
' ##################################

skinparam rectangle<<container>> {
    StereotypeFontColor $ELEMENT_FONT_COLOR
    FontColor $ELEMENT_FONT_COLOR
    BackgroundColor $CONTAINER_BG_COLOR
    BorderColor $CONTAINER_BORDER_COLOR
}

skinparam database<<container>> {
    StereotypeFontColor $ELEMENT_FONT_COLOR
    FontColor $ELEMENT_FONT_COLOR
    BackgroundColor $CONTAINER_BG_COLOR
    BorderColor $CONTAINER_BORDER_COLOR
}

skinparam queue<<container>> {
    StereotypeFontColor $ELEMENT_FONT_COLOR
    FontColor $ELEMENT_FONT_COLOR
    BackgroundColor $CONTAINER_BG_COLOR
    BorderColor $CONTAINER_BORDER_COLOR
}

skinparam rectangle<<external_container>> {
    StereotypeFontColor $ELEMENT_FONT_COLOR
    FontColor $ELEMENT_FONT_COLOR
    BackgroundColor $EXTERNAL_CONTAINER_BG_COLOR
    BorderColor $EXTERNAL_CONTAINER_BORDER_COLOR
}

skinparam database<<external_container>> {
    StereotypeFontColor $ELEMENT_FONT_COLOR
    FontColor $ELEMENT_FONT_COLOR
    BackgroundColor $EXTERNAL_CONTAINER_BG_COLOR
    BorderColor $EXTERNAL_CONTAINER_BORDER_COLOR
}

skinparam queue<<external_container>> {
    StereotypeFontColor $ELEMENT_FONT_COLOR
    FontColor $ELEMENT_FONT_COLOR
    BackgroundColor $EXTERNAL_CONTAINER_BG_COLOR
    BorderColor $EXTERNAL_CONTAINER_BORDER_COLOR
}

' Layout
' ##################################

!procedure LAYOUT_WITH_LEGEND()
hide stereotype
legend right
|<color:$LEGEND_TITLE_COLOR>**Legend**</color> |
|<$PERSON_BG_COLOR> person |
|<$SYSTEM_BG_COLOR> system |
|<$CONTAINER_BG_COLOR> container |
|<$EXTERNAL_PERSON_BG_COLOR> external person |
|<$EXTERNAL_SYSTEM_BG_COLOR> external system |
|<$EXTERNAL_CONTAINER_BG_COLOR> external container |
endlegend
!endprocedure

' Elements
' ##################################

!function $getContainer($label, $techn, $descr, $sprite)
!if ($descr == "") && ($sprite == "")
!return '=='+$label+'\n//<size:'+$TECHN_FONT_SIZE+'>['+$techn+']</size>//'
!endif
!if ($descr == "") && ($sprite != "")
!return '<$'+$sprite+'>\n=='+$label+'\n//<size:'+$TECHN_FONT_SIZE+'>['+$techn+']</size>//'
!endif
!if ($descr != "") && ($sprite == "")
!return '=='+$label+'\n//<size:'+$TECHN_FONT_SIZE+'>['+$techn+']</size>//\n\n '+$descr
!endif
!if ($descr != "") && ($sprite != "")
!return '<$'+$sprite+'>\n=='+$label+'\n//<size:'+$TECHN_FONT_SIZE+'>['+$techn+']</size>//\n\n '+$descr
!endif
!endfunction

!unquoted procedure Container($alias, $label, $techn, $descr="", $sprite="")
rectangle "$getContainer($label, $techn, $descr, $sprite)" <<container>> as $alias
!endprocedure

!unquoted procedure ContainerDb($alias, $label, $techn, $descr="", $sprite="")
database "$getContainer($label, $techn, $descr, $sprite)" <<container>> as $alias
!endprocedure

!unquoted procedure ContainerQueue($alias, $label, $techn, $descr="", $sprite="")
queue "$getContainer($label, $techn, $descr, $sprite)" <<container>> as $alias
!endprocedure

!unquoted procedure Container_Ext($alias, $label, $techn, $descr="", $sprite="")
rectangle "$getContainer($label, $techn, $descr, $sprite)" <<external_container>> as $alias
!endprocedure

!unquoted procedure ContainerDb_Ext($alias, $label, $techn, $descr="", $sprite="")
database "$getContainer($label, $techn, $descr, $sprite)" <<external_container>> as $alias
!endprocedure

!unquoted procedure ContainerQueue_Ext($alias, $label, $techn, $descr="", $sprite="")
queue "$getContainer($label, $techn, $descr, $sprite)" <<external_container>> as $alias
!endprocedure

' Boundaries
' ##################################

!unquoted function Container_Boundary($alias, $label)
!return Boundary($alias, $label, "Container")
!endfunction