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Comprehensive design for incremental refactoring of the 13k-line FileTransferActivity god-struct using a unified Pane abstraction. Detailed step-by-step plan covering 6 phases: split monoliths, error handling, Pane struct, action dedup, session split, view reorg. Extract 26 popup components from the monolithic 1,868-line popups.rs into 20 individual files under popups/. Each file contains one or two related components with their own imports. The popups.rs module file now contains only module declarations and re-exports. Replace 8 panic!() calls with error!() logging and early returns/fallthrough. These panics documented invariants (e.g. "this tab can't do X") but would crash the app if somehow triggered. Error logging is safer and more resilient. Replace raw FileExplorer fields in Browser with Pane structs that bundle the explorer and connected state. Move host_bridge_connected and remote_connected from FileTransferActivity into the panes. Add navigation API (fs_pane, opposite_pane, is_find_tab) for future unification tasks. Rename private get_selected_file to get_selected_file_by_id and add three new unified methods (get_selected_entries, get_selected_file, is_selected_one) that dispatch based on self.browser.tab(). Old per-tab methods are kept for now until their callers are migrated in subsequent tasks. Collapse _local_/_remote_ action method pairs (mkdir, delete, symlink, chmod, rename, copy) into unified methods that branch internally on is_local_tab(). This halves the number of action methods and simplifies the update.rs dispatch logic. Also unifies ShowFileInfoPopup and ShowChmodPopup dispatching to use get_selected_entries(). Move `host_bridge` and `client` filesystem fields from FileTransferActivity into the Pane struct, enabling tab-agnostic dispatch via `fs_pane()`/ `fs_pane_mut()`. This eliminates most `is_local_tab()` branching across 15+ action files. Key changes: - Add `fs: Box<dyn HostBridge>` to Pane, remove from FileTransferActivity - Replace per-side method pairs with unified pane-dispatched methods - Unify navigation (changedir, reload, scan, file_exists, has_file_changed) - Replace 147-line popup if/else chain with data-driven priority table - Replace assert!/panic!/unreachable! with proper error handling - Fix typo "filetransfer_activiy" across ~29 files - Add unit tests for Pane Net result: -473 lines, single code path for most file operations.
110 lines
5.1 KiB
Markdown
110 lines
5.1 KiB
Markdown
# CLAUDE.md
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This file provides guidance to Claude Code (claude.ai/code) when working with code in this repository.
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## Project Overview
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termscp is a terminal file transfer client with a TUI (Terminal User Interface), supporting SFTP, SCP, FTP/FTPS, Kube, S3, SMB, and WebDAV protocols. It features a dual-pane file explorer (local + remote), bookmarks, system keyring integration, file watching/sync, an embedded terminal, and customizable themes.
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- **Language**: Rust (edition 2024, MSRV 1.89.0)
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- **UI Framework**: tuirealm v3 (built on crossterm)
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- **File Transfer**: remotefs ecosystem
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## Build & Development Commands
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```bash
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# Build
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cargo build
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cargo build --release
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cargo build --no-default-features # minimal build without SMB/keyring
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# Test (CI-equivalent)
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cargo test --no-default-features --features github-actions --no-fail-fast
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# Run a single test
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cargo test <test_name> -- --nocapture
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# Run tests for a module
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cargo test --lib filetransfer::
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cargo test --lib config::params::tests
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# Lint
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cargo clippy -- -Dwarnings
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# Format
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cargo fmt --all -- --check # check only
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cargo fmt --all # fix
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```
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### System Dependencies (for building)
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- **Linux**: `libdbus-1-dev`, `libsmbclient-dev`
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- **macOS**: `pkg-config`, `samba` (brew, with force link)
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## Feature Flags
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- **`smb`** (default): SMB/Samba protocol support
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- **`keyring`** (default): System keyring integration for password storage
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- **`smb-vendored`**: Vendored SMB library (for static builds)
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- **`github-actions`**: CI flag — disables real keyring in tests, uses file-based storage
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- **`isolated-tests`**: For parallel test isolation
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## Architecture
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### Application Lifecycle
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```
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main.rs → parse CLI args → ActivityManager::new() → ActivityManager::run()
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↓
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Activity loop (draw → poll → update)
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├── AuthActivity (login/bookmarks)
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├── FileTransferActivity (dual-pane explorer)
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└── SetupActivity (configuration)
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```
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`ActivityManager` owns a `Context` that is passed between activities. Each activity takes ownership of the Context on `on_create()` and returns it on `on_destroy()`.
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### Key Modules
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| Module | Path | Purpose |
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|--------|------|---------|
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| **activity_manager** | `src/activity_manager.rs` | Orchestrates activity lifecycle and transitions |
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| **ui/activities** | `src/ui/activities/{auth,filetransfer,setup}/` | Three main screens, each implementing the `Activity` trait |
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| **ui/context** | `src/ui/context.rs` | Shared `Context` struct (terminal, config, bookmarks, theme) |
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| **filetransfer** | `src/filetransfer/` | Protocol enum, `RemoteFsBuilder`, connection parameters |
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| **host** | `src/host/` | `HostBridge` trait — abstracts local (`Localhost`) and remote (`RemoteBridged`) file operations |
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| **explorer** | `src/explorer/` | `FileExplorer` — directory navigation, sorting, filtering, transfer queue |
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| **system** | `src/system/` | `BookmarksClient`, `ConfigClient`, `ThemeProvider`, `SshKeyStorage`, `KeyStorage` trait |
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| **config** | `src/config/` | TOML-based serialization for themes, bookmarks, user params |
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### Core Traits
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- **`Activity`** (`src/ui/activities/mod.rs`): `on_create`, `on_draw`, `will_umount`, `on_destroy` — UI screen lifecycle
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- **`HostBridge`** (`src/host/bridge.rs`): Unified file operations interface (connect, list_dir, open_file, mkdir, remove, rename, copy, etc.)
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- **`KeyStorage`** (`src/system/keys/mod.rs`): `get_key`/`set_key` — password storage abstraction (keyring or encrypted file fallback)
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### Conditional Compilation
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The `build.rs` defines cfg aliases via `cfg_aliases`:
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- `posix`, `macos`, `linux`, `win` — platform shortcuts
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- `smb`, `smb_unix`, `smb_windows` — feature + platform combinations
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Platform-specific dependencies: SSH and FTP crates use different TLS backends on Unix vs Windows. SMB support is completely gated behind the `smb` feature flag.
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### File Transfer Protocols
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`FileTransferProtocol` enum maps to protocol-specific parameter types (`ProtocolParams` enum) and `RemoteFsBuilder` constructs the appropriate `RemoteFs` client. Each protocol has its own params struct (e.g., `GenericProtocolParams` for SSH-based, `AwsS3Params`, `KubeProtocolParams`, `SmbParams`, `WebDAVProtocolParams`).
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## Code Conventions
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- **rustfmt**: `group_imports = "StdExternalCrate"`, `imports_granularity = "Module"`
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- **Error handling**: Custom error types with `thiserror`, module-level Result aliases (e.g., `HostResult<T>`)
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- **Builder pattern**: Used for `RemoteFsBuilder`, `HostBridgeBuilder`
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- **Client pattern**: System services wrapped as clients (`BookmarksClient`, `ConfigClient`)
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- **Tests**: Unit tests in `#[cfg(test)]` blocks within source files. Tests requiring serial execution use `#[serial]` from `serial_test`
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- **Encryption**: Bookmark passwords encrypted with `magic-crypt`; keys stored in system keyring or encrypted file
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## Other conventions
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- Always put plans to `./.claude/plans/`
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