sol_did/instructions/
remove_verification_method.rs

1use crate::constants::DID_ACCOUNT_SEED;
2use crate::errors::DidSolError;
3use crate::state::{DidAccount, Secp256k1RawSignature};
4use anchor_lang::prelude::*;
5
6pub fn remove_verification_method(
7    ctx: Context<RemoveVerificationMethod>,
8    fragment: String,
9    eth_signature: Option<Secp256k1RawSignature>,
10) -> Result<()> {
11    let data = &mut ctx.accounts.did_data;
12    if eth_signature.is_some() {
13        data.nonce += 1;
14    }
15
16    let _ = data.remove_verification_method(&fragment);
17
18    // prevent lockout
19    require!(
20        data.has_authority_verification_methods(),
21        DidSolError::VmCannotRemoveLastAuthority
22    );
23
24    Ok(())
25}
26
27#[derive(Accounts)]
28#[instruction(fragment: String, eth_signature: Option<Secp256k1RawSignature>)]
29pub struct RemoveVerificationMethod<'info> {
30    #[account(
31        mut,
32        seeds = [DID_ACCOUNT_SEED.as_bytes(), did_data.initial_verification_method.key_data.as_ref()],
33        bump = did_data.bump,
34        constraint = did_data.find_authority_constraint(&authority.key(), &fragment.try_to_vec().unwrap(), eth_signature.as_ref(), None).is_some(),
35    )]
36    pub did_data: Account<'info, DidAccount>,
37    pub authority: Signer<'info>,
38}