98 lines
2.9 KiB
Markdown
98 lines
2.9 KiB
Markdown
# Architecture
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**Analysis Date:** 2026-02-28
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## Pattern Overview
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**Overall:** Single-Binary CLI/TUI Application (Rust)
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**Key Characteristics:**
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- Monolithic Rust binary using Ratatui for terminal UI
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- Minimal dependency footprint (only Ratatui as external dependency)
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- Single entry point with main function
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- Early-stage project with foundational structure only
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## Layers
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**Presentation Layer:**
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- Purpose: Terminal user interface rendering and interaction
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- Location: `src/main.rs` (currently)
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- Contains: TUI initialization, event handling, widget rendering
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- Depends on: Ratatui framework
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- Used by: End users through terminal
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**Business Logic Layer:**
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- Purpose: Core application functionality
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- Location: TBD - not yet implemented
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- Contains: Data processing, command handling, state management
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- Depends on: None currently defined
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- Used by: Presentation layer
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**Data Layer:**
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- Purpose: Data persistence and retrieval
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- Location: TBD - not yet implemented
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- Contains: File I/O, caching, serialization
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- Depends on: Standard library (File, IO)
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- Used by: Business logic layer
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## Data Flow
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**Typical User Interaction Flow:**
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1. Terminal input captured by Ratatui event handling
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2. User action (keyboard/mouse) parsed into application command
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3. Command dispatched to business logic handler
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4. Handler processes request, potentially reads/writes data
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5. State updated based on result
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6. UI re-rendered with new state in next frame
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**State Management:**
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- Single application state entity (not yet defined)
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- Immutable state passed to rendering function
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- Ratatui handles incremental screen updates
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## Key Abstractions
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**Terminal User Interface (TUI):**
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- Purpose: Encapsulate all terminal rendering and input handling
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- Examples: `src/main.rs` (current single module)
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- Pattern: React-like paradigm via Ratatui (state -> render)
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**Application Command/Action:**
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- Purpose: Abstract user intentions from input events
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- Examples: Not yet implemented
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- Pattern: Enum-based command pattern expected
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## Entry Points
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**Binary Entry:**
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- Location: `src/main.rs`
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- Triggers: `cargo run` or binary execution
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- Responsibilities:
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- Initialize Ratatui terminal
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- Set up event loop
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- Handle application lifecycle
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- Render UI each frame
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- Currently: Placeholder with "Hello, world!" output
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## Error Handling
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**Strategy:** Not yet defined
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**Patterns:**
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- Ratatui provides Result types for I/O operations
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- Expected approach: Result-based error propagation using ? operator
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- Terminal restoration should be ensured on panic (Ratatui provides Drop impl)
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## Cross-Cutting Concerns
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**Logging:** Not yet implemented. Standard approach would use `log` crate or println! macros during development.
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**Validation:** Not yet implemented. Expected in business logic layer once commands are defined.
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**Terminal State:** Ratatui manages terminal state (raw mode, cursor visibility, etc.). Must ensure proper cleanup on application exit.
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---
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*Architecture analysis: 2026-02-28*
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