@prefix owl: <http://www.w3.org/2002/07/owl#> .
@prefix dct: <http://purl.org/dc/terms/> .
@prefix rdfs: <http://www.w3.org/2000/01/rdf-schema#> .
@prefix odrl: <http://www.w3.org/ns/odrl/2/> .
@prefix xsd: <http://www.w3.org/2001/XMLSchema#> .
@prefix ids: <https://w3id.org/idsa/core/> .


# Classes
# -------

ids:Contract
    a owl:Class;
    rdfs:subClassOf odrl:Policy;
    rdfs:label "Contract"@en ;

    rdfs:comment "Abstract set of rules governing the usage of a Resource."@en;
.
    # Ensure the parties are set at rule level (i.e. assignee)

ids:ContractAgreement
    a owl:Class;
    rdfs:subClassOf ids:Contract, odrl:Agreement;
    rdfs:label "Contract agreement"@en ;
    rdfs:comment "Contract governing the actual usage of a Resource that has been agreed by all parties."@en;
    # End is optional
    owl:disjointWith ids:ContractRequest, ids:ContractOffer .

ids:ContractRequest
    a owl:Class;
    rdfs:subClassOf ids:Contract, odrl:Request;
    rdfs:label "Contract request"@en ;
    rdfs:comment "Contract issued by the Data Consumer requesting the usage of a Resource at particular conditions."@en;
    owl:disjointWith ids:ContractAgreement, ids:ContractOffer .

ids:ContractOffer
    a owl:Class;
    rdfs:subClassOf ids:Contract, odrl:Offer;
    rdfs:label "Contract offer"@en ;
    rdfs:comment "Contract issued by the Data Provider offering the usage of a Resource at particular conditions."@en ;
    owl:disjointWith ids:ContractAgreement, ids:ContractRequest .

# Properties of Contract
# ----------------------

ids:contractStart a owl:DatatypeProperty;
    rdfs:domain ids:Contract;
    rdfs:range xsd:dateTimeStamp;
    rdfs:label "Contract start"@en ;
    rdfs:comment "Absolute datetime the Contract is requested, offered or expected to start, depending on the type of Contract."@en.

# Optional
ids:contractEnd a owl:DatatypeProperty;
    rdfs:domain ids:Contract;
    rdfs:range xsd:dateTimeStamp;
    rdfs:label "Contract end"@en ;
    rdfs:comment "Absolute datetime the Contract is requested, offered or expected to end. If omitted, the contract has to be explicitly terminated by any of the parties."@en.

ids:contractDate a owl:DatatypeProperty;
    rdfs:domain ids:Contract;
    rdfs:range xsd:dateTimeStamp;
    rdfs:label "Contract date"@en ;
    rdfs:comment "Absolute datetime of signing the Contract."@en.

# "Datengeber"
ids:provider a owl:ObjectProperty;
    rdfs:domain ids:Contract;
    rdfs:range ids:Participant;
    rdfs:label "Provider"@en ;
    rdfs:comment "Provider of a Resource or Service that is the subject matter of the contract. This party may differ from the Assigner specified by the Contract rules."@en.

# "Datennutzer" .. oder Konsument?
ids:consumer a owl:ObjectProperty;
    rdfs:domain ids:Contract;
    rdfs:range ids:Participant;
    rdfs:label "Consumer"@en ;
    rdfs:comment "Consumer of a Resource or Service that is the subject matter of the Contract. This party may differ from the Assignee specified by the Contract rules."@en.

ids:contractDocument a owl:ObjectProperty;
    rdfs:domain ids:Contract;
    rdfs:range ids:TextResource;
    rdfs:label "Contract document"@en ;
    rdfs:comment "Equivalent human-readable encoding of this machine-interpretable Contract."@en.

ids:contractAnnex a owl:ObjectProperty;
    rdfs:domain ids:Contract;
    rdfs:range ids:Resource;
    rdfs:label "Annex to contract"@en ;
    rdfs:comment "Any type of resource related to the Contract."@en.