为博客添加 CloudFlare 图床并在 Typora 中自动替换链接

### Alternative 4: GitHub-based solution

1. Create a Git repository for your markdown files and images
2. Set up GitHub Actions to automatically process images and upload to R2
3. Use GitHub Pages with your custom domain

# Complete Typora-CloudFlare Image Workflow Guide

This document provides comprehensive instructions for setting up and using your new image workflow, which automatically processes images pasted in Typora, uploads them to CloudFlare R2, and updates your Markdown files with the correct URLs.

## Table of Contents
1. [System Overview](#system-overview)
2. [Initial Setup](#initial-setup)
3. [Using the Workflow with Typora](#using-the-workflow-with-typora)
4. [Watermark Commands Reference](#watermark-commands-reference)
5. [Integration with Existing Workflows](#integration-with-existing-workflows)
6. [Troubleshooting](#troubleshooting)

## System Overview

This workflow solves several problems in one unified process:

1. **Images are processed locally** before commit - no images stored in your Git repository
2. **Automatic uploading** to CloudFlare R2 with proper file organization
3. **Flexible watermarking** with character image and/or copyright text
4. **URL replacement** in Markdown files with your custom domain
5. **Seamless integration** with your existing Hugo blog workflows

### Workflow Diagram

```
┌─────────────┐     ┌─────────────┐     ┌────────────────┐
│ Paste image │ ──► │ Edit in     │ ──► │ Commit changes │
│ in Typora   │     │ Markdown    │     │ (pre-commit    │
└─────────────┘     └─────────────┘     │ hook activates)│
                                         └────────┬───────┘
                                                  │
┌─────────────┐     ┌─────────────┐     ┌────────▼───────┐
│ GitHub      │ ◄── │ Push to     │ ◄── │ Images uploaded│
│ publishes   │     │ GitHub      │     │ URLs updated   │
│ your blog   │     │             │     └────────────────┘
└─────────────┘     └─────────────┘
```

## Initial Setup

### 1. Set Up Directory Structure

First, create the necessary directories:

```bash
cd your-repository-path
mkdir -p .git/hooks
mkdir -p .watermarks
```

### 2. Add the Character Watermark

Place your character watermark image in the `.watermarks` directory:

```bash
# Copy your watermark image to the .watermarks directory
cp path/to/shuangZhuanCharacter.png .watermarks/
```

### 3. Create the Pre-commit Hook

Create a new file at `.git/hooks/pre-commit`:

```bash
touch .git/hooks/pre-commit
chmod +x .git/hooks/pre-commit
```

Copy the pre-commit hook script content into this file (the full script provided earlier).

### 4. Configure CloudFlare R2 Credentials

Update the configuration section in the pre-commit script with your R2 credentials:

```python
# Configuration - update these values
R2_ACCESS_KEY_ID = "your_access_key_id"
R2_SECRET_ACCESS_KEY = "your_secret_access_key"
R2_ENDPOINT = "https://c76863eb8201c5ddbec3d3bbfe20e484.r2.cloudflarestorage.com"
R2_BUCKET = "imagehost"
CUSTOM_DOMAIN = "img.shuang.blog"
```

### 5. Update .gitignore

Add the following to your `.gitignore` file to exclude images from your repository:

```
# Ignore image files in content directories
content/**/*.png
content/**/*.jpg
content/**/*.jpeg
content/**/*.gif
content/**/*.webp
content/**/*.svg
content/**/*.bmp
content/**/*.tiff
content/**/*.ico
```

### 6. Install Required Python Packages

```bash
pip install boto3 pillow
```

## Using the Workflow with Typora

### Basic Usage

1. **Open your repository in Typora**:
   ```bash
   cd your-repository-path
   typora content/posts/your-post.md
   ```

2. **Paste images directly into Typora**:
   - Use `Ctrl+V` (or `Cmd+V` on Mac) to paste images
   - Typora will save the image locally in the same directory as your Markdown file

3. **Add watermarks (optional)**:
   - Add the appropriate watermark command to your image reference
   - See [Watermark Commands Reference](#watermark-commands-reference)

4. **Save your Markdown file**:
   - Save with `Ctrl+S` (or `Cmd+S` on Mac)

5. **Commit your changes**:
   ```bash
   git add content/posts/your-post.md
   git commit -m "Added new post with images"
   ```
   - The pre-commit hook will automatically:
     - Detect images in your Markdown files
     - Apply watermarks as specified
     - Upload images to CloudFlare R2
     - Update image URLs in your Markdown files

6. **Push to GitHub**:
   ```bash
   git push
   ```
   - Your existing GitHub Actions will deploy your Hugo site

### Typora Settings

For optimal usage with Typora, configure these settings:

1. Open Typora Preferences
2. Go to the Image tab
3. Set "When Insert Image" to "Copy image to ./${filename}.assets"
4. Check "Apply above rules to local images" and "Apply above rules to online images"

This ensures that images are saved in a predictable location relative to your Markdown file.

## Watermark Commands Reference

### Markdown Syntax

| Command | Description | Position |
|---------|-------------|----------|
| `#wm:char` | Character symbol only | Bottom right |
| `#wm:cr` | Copyright text only | Bottom left |
| `#wm:both` | Both watermarks together | Character (right) + Copyright (left) |

#### Examples:

```markdown
![My image](image.jpg#wm:char)
![Protected image](image.jpg#wm:cr)
![Fully protected](image.jpg#wm:both)
```

### HTML Syntax

| Attribute | Description | Position |
|-----------|-------------|----------|
| `data-wm="char"` | Character symbol only | Bottom right |
| `data-wm="cr"` | Copyright text only | Bottom left |
| `data-wm="both"` | Both watermarks together | Character (right) + Copyright (left) |

#### Examples:

```html
<img src="image.jpg" data-wm="char" alt="My image">
<img src="image.jpg" data-wm="cr" alt="Protected image">
<img src="image.jpg" data-wm="both" alt="Fully protected">
```

### When to Use Each Watermark Type

| Content Type | Recommended Watermark | Rationale |
|--------------|----------------------|-----------|
| Personal photos | `#wm:char` | Subtle branding without legal text |
| Professional work | `#wm:cr` | Clear copyright protection |
| Important images | `#wm:both` | Maximum protection with branding |
| Screenshots | None | Usually don't need watermarking |

## Integration with Existing Workflows

This solution integrates seamlessly with your existing GitHub Actions workflows:

### 1. `telegram-processor.yml`
- This workflow processes Telegram messages and updates your blog
- No changes needed - works independently of the image processing

### 2. `cloudflare-pages.yml`
- This workflow deploys your Hugo site to Cloudflare Pages
- Automatically runs after you push changes
- Includes the updated Markdown files with correct image URLs

### Workflow Sequence:

1. Pre-commit hook processes images locally
2. You push changes to GitHub
3. Your existing GitHub Actions deploy the blog
4. Images are served from CloudFlare R2 with your custom domain

## Troubleshooting

### Common Issues

#### Images not uploading to R2
- Check your R2 credentials
- Verify you have the required Python packages installed
- Ensure the pre-commit hook is executable

#### Watermarks not appearing
- Verify the watermark image path is correct
- Check that the watermark command syntax is correct
- Ensure the Pillow package is installed

#### Pre-commit hook not running
- Ensure the hook is executable: `chmod +x .git/hooks/pre-commit`
- Verify the hook path is correct: `.git/hooks/pre-commit`

#### URLs not updating correctly
- Check that the custom domain setting is correct
- Verify that the R2 bucket is properly configured

### Testing the Pre-commit Hook

You can test the pre-commit hook manually:

```bash
# From your repository root
.git/hooks/pre-commit
```

This will process any staged Markdown files with images.

### Debugging Tips

Add debugging statements to the pre-commit hook:

```python
print(f"Processing file: {markdown_file}")
print(f"Found images: {images}")
print(f"Image data: {image_data[:100]}...")  # Print first 100 bytes
```

This helps identify where issues might be occurring.