@startuml
skinparam svgDimensionStyle false

title Overall Sequence Diagram for Religious Pilgrimage and IPS

actor "Hajj Counselor" as C
actor "Pilgrim from\nOrigin Country" as P
actor "Accompanying Clinician\nfrom\nOrigin Country" as AC
participant "Origin Country\nHealth Wallet" as OC
participant "Origin Country\nHIE" as OCHIE
participant "WHO GDHCN" as WHO
participant "Host Country\nEMR" as HCEMR
actor "Health Worker\nin Host Country" as HW
participant "Bar code scanner" as Scanner

autonumber "<b>00:</b>"


loop routine synchronization 
  OC -> OC : generate public-private key pairs\nfor issuing health documents
  OCHIE -> WHO: send public keys\nfor IPS verification
  HCEMR -> WHO : retrieves and caches all public keys\nfor IPS and SHL verification
end
destroy WHO


group Asessment
  alt Indonesia
   C -> P : Jamaah Haji conducts health assessment
  else Malaysia
   C -> P : conduct health assessment\nutilize FHIR Questionnaire resource for UI
	 C -> OCHIE : store Assesment response as\nFHIR QuestionnaireResponse resource
	 OCHIE -> OCHIE : Assessment QuestionaireResponse extracted to\n corresponding FHIR resource 
  end
end


group Counseling and Consent
  alt Indonesia
   C -> P : explains use of ID Badge with SMART Health Link\nincluding consent policy
   OCHIE -> OCHIE : create a FHIR Consent resource with\ncode #CONSENT-KSA and #CONSENT-IDN
  else Malaysia
   C -> P : explain utilization of digital health wallet\nduring Hajj including consent policy 
  end
end


group Issue Smart Health Link
	note left of QR #aqua
   	  Verifiable Smart Health Links:
	  create Smart Health Link for the IPS
	  generate digital signature\ncapture signed SHL as HCERT claim
	  HCERT is rendered as QR code
	end note
  alt Indonesia
    note right of OCHIE #yellow
      Badge is printed prior to health assessment
    end note
    OCHIE -> OCHIE : generate SHL
    OCHIE -> OCHIE : Send SHL to printer
    C -> P :   issue Jamaah Haji Indonesia Card with\nVerifiable Smart Health Link printed on back
  else Malaysia
    P -> OC : generate IPS from the FHIR resource through MySejhatera app\n set disclosure & timelimit
	  OC -> OC : display Consent Questionniare as\n FHIR Questionnaire resource for UI
	  OC -> OCHIE:  Consent stored as QuestionnaireResponse
	  OCHIE -> OCHIE: Consent QuestionnaireResponse extracted and \nCreate Consent resource with codes\n#CONSENT-KSA and #CONSENT-MYS
	  OCHIE -> OCHIE: Add the consent FHIR resource to IPS
    OC -> OCHIE : request verifiable HCERT SHL for  IPS\nSend Consent Questionniare
	  OCHIE -> OCHIE : generate Verifiable Smart Health Link
  end
end

HCEMR -> HCEMR: Upload pilgrims demographic information few weeks before Hajj
P --> HW: travels to Host Country and seeks care,\nshares verifiable health document(IPS) from\nhealth wallet (IPS via SHL)
HW --> HCEMR: identifies pilgrim with demographics and registers patient with pilgrimage number
HW --> Scanner: uses scanner to scan QR code



HCEMR -> OC: scans QR code from\npilgrim's health wallet\n(IPS via SHL)
destroy OC
HCEMR -> HCEMR: verifies QR code signature\n using cached keys
HCEMR  -> OCHIE : retrieves health document (IPS)\n(document might be pregenerated\n or generated on request)
destroy OCHIE


HCEMR-> HCEMR: verifies health document (IPS) signature\n using cached keys
HCEMR -> HCEMR: saves local copy of health document (IPS)
HCEMR -> HW: display contents of health document
 
HW --> P: provides appropriate care
HW -> HCEMR: updates local record of care

@enduml