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feat(agent): add tools for querying and updating custom identifiers
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jxxghp
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---
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name: generate-identifiers
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description: >-
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Use this skill when a user provides a torrent name or file name and wants to fix recognition issues,
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or asks to add/manage custom identifiers (自定义识别词).
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This skill generates identifier rules based on the WordsMatcher preprocessing logic,
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checks for duplicates against existing rules, and saves them via MCP tools.
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Applicable scenarios include:
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1) A torrent or file name is incorrectly recognized (wrong title, season, episode, etc.);
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2) The user wants to block unwanted keywords from torrent names;
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3) The user needs episode offset rules for series with non-standard numbering;
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4) The user wants to force recognition of a specific media by TMDB/Douban ID.
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allowed-tools: query_custom_identifiers update_custom_identifiers recognize_media
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---
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# Generate Custom Identifiers (生成自定义识别词)
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This skill helps generate custom identifier rules for MoviePilot's media recognition system. Custom identifiers preprocess torrent/file names before the recognition engine runs, correcting naming issues that cause misidentification.
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## Prerequisites
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You need the following tools:
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- `query_custom_identifiers` - Query all existing custom identifier rules
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- `update_custom_identifiers` - Save the updated identifier list (replaces the full list)
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- `recognize_media` - Test recognition of a torrent title or file path (optional, for verification)
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## Supported Rule Formats
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There are **four formats**. Operators must have spaces on both sides.
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### 1. Block Word (屏蔽词)
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Removes matched text from the title. Supports regex.
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```
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REPACK
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```
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### 2. Replacement (被替换词 => 替换词)
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Regex substitution. The left side is a regex pattern, the right side is the replacement (supports backreferences).
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```
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被替换词 => 替换词
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```
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**Special replacement for direct ID specification:**
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```
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被替换词 => {[tmdbid=xxx;type=movie/tv;s=xxx;e=xxx]}
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被替换词 => {[doubanid=xxx;type=movie/tv;s=xxx;e=xxx]}
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```
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Where `s` (season) and `e` (episode) are optional.
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### 3. Episode Offset (集偏移)
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Shifts episode numbers found between the front and back delimiter words. `EP` is the placeholder for the original episode number.
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```
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前定位词 <> 后定位词 >> EP-12
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```
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### 4. Combined Replacement + Episode Offset
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First performs replacement; episode offset only runs if replacement succeeded.
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```
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被替换词 => 替换词 && 前定位词 <> 后定位词 >> EP-12
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```
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### Comments
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Lines starting with `#` are comments and will be skipped during processing.
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## Important Rules for Writing Identifiers
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1. **Regex support**: All patterns support regular expressions. Special characters (`. * + ? ^ $ { } [ ] ( ) | \`) must be escaped with `\` when matching literally.
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2. **Spaces matter**: The operators ` => `, ` <> `, ` >> `, ` && ` must have spaces on both sides.
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3. **One rule per string**: Each element in the identifiers list is one rule.
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4. **EP placeholder**: In episode offset expressions, `EP` represents the original episode number. Common patterns:
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- `EP-12` means subtract 12
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- `EP+5` means add 5
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- `EP*2` means multiply by 2
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5. **Chinese number support**: Episode offset handles Chinese numbers (一二三四五六七八九十).
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6. **Empty replacement**: Using nothing after `=>` is equivalent to a block word.
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## Workflow
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### Step 1: Analyze the Problem
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Parse the torrent/file name provided by the user. Identify:
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- What is being incorrectly recognized (title, season, episode, year, quality, etc.)
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- What the correct recognition result should be
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- Which identifier format(s) will solve the problem
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### Step 2: Generate the Identifier Rule(s)
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Write the rule using the appropriate format. Ensure:
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- Regex special characters are properly escaped
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- Add a comment line (starting with `#`) above the rule to describe what it does
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- Test the regex mentally against the provided name to verify correctness
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### Step 3: Query Existing Identifiers
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Use the `query_custom_identifiers` tool to get all current rules:
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```
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query_custom_identifiers(explanation="Checking existing identifiers before adding new rules to avoid duplicates")
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```
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### Step 4: Check for Duplicates
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Compare each new rule against the existing identifiers:
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- **Exact duplicate**: The rule string is identical to an existing rule — skip it
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- **Functional duplicate**: A different rule that produces the same effect on the same input (e.g., same regex pattern with trivial whitespace differences) — warn the user
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- **Conflict**: An existing rule modifies the same text in a different way — warn the user and ask which to keep
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### Step 5: Save the Updated Identifiers
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Merge new non-duplicate rules into the existing list, then use `update_custom_identifiers` to save the **complete** list:
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```
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update_custom_identifiers(
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explanation="Adding new identifier rules for [description]",
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identifiers=["existing rule 1", "existing rule 2", "# new comment", "new rule"]
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)
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```
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**CRITICAL**: Always include ALL existing rules in the list. This tool replaces the entire list.
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### Step 6: Verify (Optional)
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If the user wants to verify the rule works, use `recognize_media` to test:
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```
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recognize_media(explanation="Testing recognition after adding identifier", title="the torrent title to test")
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```
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### Step 7: Report
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Tell the user:
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- What rule(s) were added
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- What effect they will have on the title
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- Whether any duplicates or conflicts were found
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## Common Scenarios and Examples
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### Wrong Season/Episode Parsing
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**User**: "种子名 `[SubGroup] My Show - 13 [1080P]`，这是第二季第1集，但被识别成第13集"
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**Solution**: Episode offset to subtract 12:
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```
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# My Show 第二季集数偏移（13->1）
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\[SubGroup\] <> \[1080P\] >> EP-12
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```
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### Unwanted Text Causing Wrong Identification
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**User**: "种子名 `My.Show.2024.REPACK.1080p.mkv`，REPACK导致识别异常"
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**Solution**: Block word:
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```
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# 屏蔽REPACK标记
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REPACK
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```
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### Non-Standard Naming
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**User**: "文件名 `[OldName] EP01.mkv`，应该识别为 NewName"
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**Solution**: Replacement:
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```
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# OldName替换为NewName
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OldName => NewName
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```
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### Force TMDB ID Recognition
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**User**: "种子名 `Some.Weird.Name.S01E01.1080p.mkv`，识别不到，TMDB ID是12345，是电视剧"
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**Solution**: Direct ID specification:
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```
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# 强制识别Some.Weird.Name为TMDB ID 12345
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Some\.Weird\.Name => {[tmdbid=12345;type=tv;s=1]}
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```
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### Combined Fix
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**User**: "种子名 `[Baha][OldTitle][13][1080P]`，标题应该是NewTitle，而且13应该是第二季第1集"
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**Solution**: Combined replacement + episode offset:
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```
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# OldTitle替换为NewTitle并偏移集数
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OldTitle => NewTitle && \[Baha\] <> \[1080P\] >> EP-12
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```
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### Multiple Episode Numbers in One Title
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**User**: "种子名 `[Group] Title - 13-14 [1080P]`，应该是第1-2集"
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**Solution**: Episode offset (handles multiple numbers between delimiters):
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```
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# Title 集数偏移
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\[Group\] <> \[1080P\] >> EP-12
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```
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## WordsMatcher Processing Logic Reference
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The `WordsMatcher.prepare()` method (in `app/core/meta/words.py`) processes each rule in order:
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1. Skip empty lines and lines starting with `#`
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2. Detect format by checking operator presence:
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- Contains ` => ` AND ` && ` AND ` >> ` AND ` <> ` → Combined format (4)
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- Contains ` => ` → Replacement format (2)
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- Contains ` >> ` AND ` <> ` → Episode offset format (3)
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- Otherwise → Block word format (1)
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3. For combined format, replacement runs first; episode offset only runs if replacement succeeded
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4. Returns the modified title and a list of rules that were actually applied
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5. Priority: per-subscribe `custom_words` parameter takes precedence over global `CustomIdentifiers`
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## Safety Notes
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- Always query existing rules first before updating
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- Never remove existing rules unless the user explicitly asks
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- Add comment lines before new rules for maintainability
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- When uncertain about the correct approach, present multiple options and let the user choose
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