# Neovim IDE Configuration

A feature-rich Neovim setup optimized for Python, JSON, and CSV development.

## Features

### LSP (Language Server Protocol)
- **Python** (pyright) - Autocomplete, type checking, goto definition, hover docs, rename
- **JSON** (jsonls) - Validation, formatting, schema support
- **YAML** (yamlls) - YAML file support
- **HTML/CSS** (html, cssls) - Web development
- **Bash** (bashls) - Shell script support
- **Lua** (lua_ls) - Neovim config development

### Completion
- **nvim-cmp** - Smart autocomplete with LSP integration
- **LuaSnip** - Snippet support

### Syntax Highlighting & Parsing
- **Treesitter** - Advanced syntax highlighting for Python, JSON, CSV, YAML, Markdown, and more
- **CSV Support** - Syntax highlighting for CSV files

### File Management
- **Neo-tree** - File explorer with git integration
- **Telescope** - Fuzzy finder for files, text, and more

### Git Integration
- **Gitsigns** - Git status in the gutter (added, modified, deleted lines)

### Debugging
- **nvim-dap** - Debug Python code with breakpoints, step-through debugging
- **dap-ui** - Visual debugging interface

### UI Enhancements
- **Catppuccin** - Beautiful dark color scheme (Mocha flavor)
- **Lualine** - Custom statusline showing mode, git branch, file, diagnostics

### Formatting
- **conform.nvim** - Auto-format on save (ruff for Python, jq for JSON, etc.)

### Utilities
- **nvim-comment** - Easy commenting (toggle comments with `gcc`)

---

## Installation

1. **Install Neovim** (version 0.10+ recommended)

2. **Link this config:**
   ```bash
   ln -s ~/.dotfiles/nvim ~/.config/nvim
   ```

3. **Open Neovim** - plugins will install automatically

4. **Install debugpy for Python debugging:**
   ```bash
   pip install debugpy
   ```

5. **Install formatters (optional):**
   ```bash
   pip install ruff black
   ```

---

## Keymaps

### General

| Keymap | Action |
|--------|--------|
| `<leader>w` | Save file |
| `<leader>q` | Quit Neovim |
| `<Esc>` | Exit insert mode |
| `u` | Undo |
| `<C-r>` | Redo |
| `dd` | Delete line |
| `yy` | Yank (copy) line |
| `p` | Paste |

### Navigation

| Keymap | Action |
|--------|--------|
| `h/j/k/l` | Move left/down/up/right |
| `w/b` | Jump forward/back by word |
| `0/$` | Jump to start/end of line |
| `gg` | Jump to beginning of file |
| `G` | Jump to end of file |
| `<C-d>/<C-u>` | Jump down/up half page |
| `<C-f>/<C-b>` | Jump forward/back page |

### File Explorer (Neo-tree)

| Keymap | Action |
|--------|--------|
| `<C-n>` | Toggle file explorer |
| `Enter` | Open file/folder |
| `h` | Close folder |
| `l` | Open folder |
| `a` | Add file |
| `d` | Delete file |
| `r` | Rename file |
| `y/x` | Copy/Cut file |
| `p` | Paste |

### Fuzzy Finder (Telescope)

| Keymap | Action |
|--------|--------|
| `<C-p>` | Find files |
| `<leader>fg` | Grep (search text in files) |

### LSP (Language Server)

| Keymap | Action |
|--------|--------|
| `gd` | Go to definition |
| `gD` | Go to declaration |
| `gi` | Go to implementation |
| `gr` | Show references |
| `K` | Show hover documentation |
| `<leader>rn` | Rename symbol |
| `<leader>ca` | Code actions / quick fixes |
| `<leader>e` | Show diagnostic error |
| `[d / ]d` | Previous/next diagnostic |

### Formatting

| Keymap | Action |
|--------|--------|
| `<leader>f` | Format file |

### Git (Gitsigns)

| Keymap | Action |
|--------|--------|
| `]c / [c` | Next/previous hunk (change) |
| `<leader>hs` | Stage current hunk |
| `<leader>hr` | Reset current hunk |
| `<leader>hp` | Preview hunk changes |
| `<leader>hb` | Blame line |

### Debugging (DAP)

| Keymap | Action |
|--------|--------|
| `<F5>` | Continue / Start debugger |
| `<F9>` | Toggle breakpoint |
| `<F10>` | Step over |
| `<F11>` | Step into |
| `<S-F11>` | Step out |
| `<leader>du` | Toggle debugger UI |

### Commenting

| Keymap | Action |
|--------|--------|
| `gcc` | Toggle line comment |
| `gc` (visual) | Toggle selection comment |

### Folding

| Keymap | Action |
|--------|--------|
| `zc` | Close (fold) current block |
| `zo` | Open (unfold) current block |
| `za` | Toggle fold at cursor |
| `zM` | Close all folds |
| `zR` | Open all folds |
| `zC` | Close folds recursively |
| `zO` | Open folds recursively |
| `zE` | Eliminate all folds |
| `zv` | Open folds enough to see cursor |

---

## File Type Specifics

### Python (.py)
- **LSP**: Full autocompletion, type checking, goto definition
- **Formatting**: ruff format (fast), black (backup)
- **Debugging**: Set breakpoints with `F9`, run with `F5`
- **Indentation**: 4 spaces (Python convention)

### JSON (.json)
- **LSP**: Validation, schema support
- **Formatting**: jq
- **Indentation**: 2 spaces
- **Folding**: JSON objects/arrays are foldable (`za` to toggle, `zM` to close all)

### CSV (.csv)
- **Treesitter**: Syntax highlighting
- **No wrap**: Full row visibility
- **Navigation**: Standard motions (`j/k`, `/`, etc.)
- **Tip**: Use `set nowrap` for viewing wide CSV files without line wrapping

### YAML (.yaml/.yml)
- **LSP**: Validation, schema support
- **Folding**: Nested structures are foldable

### Python (.py)
- **Folding**: Functions, classes, and code blocks are foldable
- **Tip**: Use `za` to toggle a fold at cursor, `zM` to close all folds

---

## Troubleshooting

### LSP not working
1. Ensure the language server is installed
2. Run `:LspInfo` to check status
3. Try `:LspRestart`

### Debugging not working
1. Install debugpy: `pip install debugpy`
2. Place breakpoint with `F9`
3. Start with `F5`

### Colors wrong
The config uses Catppuccin Mocha theme. If you see color issues, run:
```vim
:colorscheme catppuccin
```

---

## Adding New Plugins

Plugins are defined in `lua/plugins/`. Each `.lua` file is a plugin spec that returns a table.

Example (`lua/plugins/myplugin.lua`):
```lua
return {
    "username/repo-name",
    config = function()
        require("myplugin").setup()
    end,
}
```

---

## Credits

- [lazy.nvim](https://github.com/folke/lazy.nvim) - Plugin manager
- [nvim-lspconfig](https://github.com/neovim/nvim-lspconfig) - LSP configuration
- [nvim-cmp](https://github.com/hrsh7th/nvim-cmp) - Completion
- [Telescope](https://github.com/nvim-telescope/telescope.nvim) - Fuzzy finder
- [Neo-tree](https://github.com/nvim-neo-tree/neo-tree.nvim) - File explorer
- [Catppuccin](https://github.com/catppuccin/nvim) - Colorscheme
- [Gitsigns](https://github.com/lewis6991/gitsigns.nvim) - Git integration
- [nvim-dap](https://github.com/mfussenegger/nvim-dap) - Debugging