# ACAPY - auto delete presentation exchange

https://github.com/hyperledger/aries-cloudagent-python/issues/2126

## Current State for Credential Exchange
##### argparse.py

###### args.preserve_exchange_records
`--preserve-exchange-records`
`ACAPY_PRESERVE_EXCHANGE_RECORDS`

if args.preserve_exchange_records:
settings["preserve_exchange_records"] = True

##### V1_0
issue_credential.v1_0.manager.prepare_send
issue_credential.v1_0.manager.create_proposal
- has auto_remove parameter

    auto_remove = not self._profile.settings.get("preserve_exchange_records")

  V10CredentialExchange(auto_remove=auto_remove)

issue_credential.v1_0.manager.receive_proposal
issue_credential.v1_0.manager.receive_offer
- check system setting when creating V10CredentialExchange

V10CredentialExchange
- has auto_remove: bool = False

| API Call | Schema |
| -------- | -------- |
| `/issue-credential/create` | V10CredentialCreateSchema |
| `/issue-credential/send` | |
| `/issue-credential/send-proposal` | V10CredentialProposalRequestSchemaBase |
| `/issue-credential/create-offer` | V10CredentialConnFreeOfferRequestSchema |
| `/issue-credential/send-offer` | V10CredentialFreeOfferRequestSchema |

- have auto_remove = fields.Bool, required = False

##### V2_0

issue_credential.v2_0.manager.prepare_send
issue_credential.v2_0.manager.create_proposal
- has auto_remove parameter

    auto_remove = not self._profile.settings.get("preserve_exchange_records")

  V20CredExRecord(auto_remove=auto_remove)

issue_credential.v2_0.manager.receive_proposal
issue_credential.v2_0.manager.receive_offer
- check system setting when creating V20CredExRecord

V20CredExRecord
- has auto_remove: bool = False

| API Call | Schema |
| -------- | -------- |
| `issue-credential-2.0/create` | V20IssueCredSchemaCore |
| `/issue-credential-2.0/send` | V20CredExFreeSchema |
| `/issue-credential-2.0/send-proposal` | |
| `/issue-credential-2.0/send-request` | V20CredRequestRequestSchema |
| `/issue-credential-2.0/send-offer` | V20CredBoundOfferRequestSchema |

- have auto_remove = fields.Bool, required = False

### Proposal

#### Presentation Exchange Changes

##### argparse.py

###### args.preserve_exchange_records

`--preserve-pres-exch-records-verifier`
`ACAPY_PRESERVE_PRES_EXCH_RECORDS_VERIFIER`

if args.preserve_pres_exch_records_verifier:
settings["preserve_pres_exch_records_verifier"] = True

`--preserve-pres-exch-records-holder`
`ACAPY_PRESERVE_PRES_EXCH_RECORDS_HOLDER`

if args.preserve_pres_exch_records_holder:
settings["preserve_pres_exch_records_holder"] = True

Add optional fields to API schemas, models and optional parameters to Manager.

##### V1_0
present_proof.v1_0.manager.create_exchange_for_proposal
present_proof.v1_0.manager.create_exchange_for_request
- add auto_remove parameter
- check system setting (`preserve_pres_exch_records_verifier`) when creating V10PresentationExchange

present_proof.v1_0.manager.receive_proposal
- check system setting (`preserve_pres_exch_records_holder`) when creating V10PresentationExchange

V10PresentationExchange
- add auto_remove: bool = False

| API Call | Schema |
| -------- | -------- |
| `/present-proof/send-proposal` | V10PresentationProposalRequestSchema |
| `/present-proof/create-request` | V10PresentationCreateRequestRequestSchema |
| `/present-proof/send-request` | |
- add auto_remove = fields.Bool, required = False

##### V2_0
present_proof.v2_0.manager.create_exchange_for_proposal
present_proof.v2_0.manager.create_exchange_for_request
- add auto_remove parameter
- check system setting (`preserve_pres_exch_records_verifier`) when creating V20PresExRecord

present_proof.v2_0.manager.receive_pres_proposal
- check system setting when creating V20PresExRecord
- check system setting (`preserve_pres_exch_records_holder`) when creating V20PresExRecord

V20PresExRecord
- add auto_remove: bool = False

| API Call | Schema |
| -------- | -------- |
| `/present-proof-2.0/send-proposal` | V20PresProposalRequestSchema |
| `/present-proof-2.0/create-request` | V20PresCreateRequestRequestSchema |
| `/present-proof-2.0/send-request` | V20PresSendRequestRequestSchema |
- add auto_remove = fields.Bool, required = False

#### Credential Exchange Changes
Add new configurations for credential exchange that mirror the presentation exchange. Leave old one for backwards compatibility (add deprecation warnings).

##### argparse.py

###### args.preserve_exchange_records
`--preserve-cred-exch-records-issuer`
`ACAPY_PRESERVE_CRED_EXCHANGE_RECORDS_ISSUER`

if args.preserve_cred_exch_records_issuer:
settings["preserve_cred_exch_records_issuer"] = True

**NOTE**: This setting is equivalent to the current `preserve_exchange_records` setting.

`--preserve-cred-exch-records-holder`
`ACAPY_PRESERVE_CRED_EXCHANGE_RECORDS_HOLDER`

if args.preserve_cred_exch_records_holder:
settings["preserve_cred_exch_records_holder"] = True

This is a new setting and will need to be incorporated into current workflows.

issue_credential.v2_0.manager.receive_proposal
issue_credential.v2_0.manager.receive_offer
- check system setting (`preserve_cred_exch_records_holder`) when creating V20CredExRecord