vtcode-core 0.136.0

Core library for VT Code - a Rust-based terminal coding agent
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use std::path::PathBuf;

use super::PatchError;
use super::io::{BackupEntry, remove_existing_entry};

pub(crate) enum OperationEffect {
    Applied { state: OperationState, detail: String },
    Skipped { detail: String },
}

impl OperationEffect {
    pub(crate) fn applied(state: OperationState, detail: impl Into<String>) -> Self {
        Self::Applied { state, detail: detail.into() }
    }

    pub(crate) fn skipped(detail: impl Into<String>) -> Self {
        Self::Skipped { detail: detail.into() }
    }
}

#[expect(clippy::enum_variant_names)]
pub(crate) enum OperationState {
    AddedFile {
        path: PathBuf,
    },
    DeletedFile {
        original_path: PathBuf,
        backup: BackupEntry,
    },
    UpdatedFile {
        original_path: PathBuf,
        written_path: PathBuf,
        backup: BackupEntry,
    },
}

impl OperationState {
    pub(crate) async fn commit(self) -> Result<(), PatchError> {
        match self {
            OperationState::AddedFile { .. } => Ok(()),
            OperationState::DeletedFile { backup, .. } | OperationState::UpdatedFile { backup, .. } => {
                backup.remove().await
            }
        }
    }

    pub(crate) async fn rollback(self) -> Result<(), PatchError> {
        match self {
            OperationState::AddedFile { path } => remove_existing_entry(&path).await,
            OperationState::DeletedFile { original_path, backup } => backup.restore(&original_path).await,
            OperationState::UpdatedFile { original_path, written_path, backup } => {
                remove_existing_entry(&written_path).await?;
                backup.restore(&original_path).await
            }
        }
    }
}