vade-didcomm 0.3.0

DIDComm communication helper for vade
Documentation 
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use crate::{
    datatypes::MessageWithBody,
    protocols::{
        present_proof::{
            datatypes::{ProblemReportData, State, UserType},
            presentation::{get_current_state, save_state},
        },
        protocol::{generate_step_output, StepResult},
    },
};

/// Protocol handler for direction: `send`, type: `PRESENT_PROOF_PROTOCOL_URL/problem-report`
pub fn send_problem_report(_options: &str, message: &str) -> StepResult {
    let problem_report_message: MessageWithBody<ProblemReportData> = serde_json::from_str(message)?;
    let problem_report_data = problem_report_message
        .body
        .as_ref()
        .ok_or("missing problem report data in body")?;
    let thid = &problem_report_message
        .thid
        .as_ref()
        .ok_or("Thread id can't be empty")?;
    let current_state: State = get_current_state(thid, &problem_report_data.user_type)?.parse()?;

    match current_state {
        State::PresentationRequested
        | State::PresentationRequestReceived
        | State::PresentationSent
        | State::PresentationReceived
        | State::PresentationProposalReceived
        | State::PresentationProposed => save_state(
            thid,
            &State::ProblemReported,
            &problem_report_data.user_type,
        )?,
        _ => {
            return Err(Box::from(format!(
                "Error while processing step: State from {} to {} not allowed",
                current_state,
                State::ProblemReported
            )))
        }
    };

    generate_step_output(&serde_json::to_string(&problem_report_message)?, "{}")
}

/// Protocol handler for direction: `receive`, type: `PRESENT_PROOF_PROTOCOL_URL/problem-report`
pub fn receive_problem_report(_options: &str, message: &str) -> StepResult {
    let problem_report_message: MessageWithBody<ProblemReportData> = serde_json::from_str(message)?;
    let problem_report_data = problem_report_message
        .body
        .as_ref()
        .ok_or("missing problem report data in body")?;
    let thid = problem_report_message
        .thid
        .ok_or("Thread id can't be empty")?;

    // flip sides to get current users type
    let current_user_type = match &problem_report_data.user_type {
        UserType::Prover => UserType::Verifier,
        UserType::Verifier => UserType::Prover,
        _ => {
            return Err(Box::from(format!(
                "invalid user type for problem report: {}",
                &problem_report_data.user_type
            )))
        }
    };
    let current_state: State = get_current_state(&thid, &current_user_type)?.parse()?;

    match current_state {
        State::PresentationRequested
        | State::PresentationRequestReceived
        | State::PresentationSent
        | State::PresentationReceived
        | State::PresentationProposalReceived
        | State::PresentationProposed => {
            save_state(&thid, &State::ProblemReported, &current_user_type)?
        }
        _ => {
            return Err(Box::from(format!(
                "Error while processing step: State from {} to {} not allowed",
                current_state,
                State::ProblemReported
            )))
        }
    };

    generate_step_output(message, "{}")
}