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docs/result_table.md
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# ResultTable system — Overview & usage
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This document explains the `ResultTable` system used across the CLI and TUI: how tables are built, how providers integrate with them, and how `@N` selection/expansion and provider selectors work.
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## TL;DR ✅
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- `ResultTable` is the unified object used to render tabular results and drive selection (`@N`) behavior.
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- Providers should return `SearchResult` objects (or dicts) and can either supply `selection_args` per row or implement a `selector()` method to handle `@N` selections.
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- Table metadata (`set_table_metadata`) helps providers attach context (e.g., `provider_view`, `magnet_id`) that selectors can use.
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---
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## Key concepts
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- **ResultTable** (`SYS/result_table.py`)
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- Renders rows as a rich table and stores metadata used for selection expansion.
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- Important APIs: `add_result()`, `set_table()`, `set_source_command()`, `set_row_selection_args()`, `set_table_metadata()`, and `select_interactive()`.
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- **ResultRow**
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- Holds columns plus `selection_args` (used for `@N` expansion) and `payload` (original object).
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- **Provider selector**
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- If a provider implements `selector(selected_items, ctx=..., stage_is_last=True)`, it is run first when `@N` is used; if the selector returns `True` it has handled the selection (e.g., drilling into a folder and publishing a new ResultTable).
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- **Pipeline / CLI expansion**
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- When the user types `@N`, CLI tries provider selectors first. If none handle it, CLI re-runs `source_command + source_args + row_selection_args` (for single-selection) or pipes items downstream for multi-selection.
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- **Table metadata**
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- `ResultTable.set_table_metadata(dict)` allows attaching provider-specific context (for example: `{"provider":"alldebrid","view":"files","magnet_id":123}`) for selectors and other code to use.
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---
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## How to build a table (provider pattern)
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Typical provider flow (pseudocode):
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```py
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from SYS.result_table import ResultTable
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table = ResultTable("Provider: X result").set_preserve_order(True)
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table.set_table("provider_name")
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table.set_table_metadata({"provider":"provider_name","view":"folders"})
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table.set_source_command("search-file", ["-provider","provider_name","query"])
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for r in results:
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table.add_result(r) # r can be a SearchResult, dict, or PipeObject
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ctx.set_last_result_table(table, payloads)
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ctx.set_current_stage_table(table)
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```
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Notes:
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- To drive a direct `@N` re-run, call `table.set_row_selection_args(row_index, ["-open", "<id>"])`.
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- For more advanced or interactive behavior (e.g., drill-into, fetch more rows), implement `provider.selector()` and return `True` when handled.
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---
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## Selection (@N) flow (brief)
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1. User enters `@N` in the CLI.
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2. CLI chooses the appropriate table (overlay > last table > history) and gathers the selected payload(s).
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3. `PipelineExecutor._maybe_run_class_selector()` runs provider `selector()` hooks for the provider inferred from table or payloads. If any selector returns `True`, expansion stops.
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4. Otherwise, for single selections, CLI grabs `row.selection_args` and expands: `source_command + source_args + row_selection_args` and inserts it as the expanded stage. For multi-selections, items are piped downstream.
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---
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## Columns & display
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- Providers can pass a `columns` list ([(name, value), ...]) in the result dict/SearchResult to control which columns are shown and their order.
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- Otherwise, `ResultTable` uses a priority list (title/store/size/ext) and sensible defaults.
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- The table rendering functions (`to_rich`, `format_json`, `format_compact`) are available for different UIs.
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---
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## Provider-specific examples
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### AllDebrid (debrid file hosting)
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AllDebrid exposes a list of magnets (folder rows) and the files inside each magnet. The provider returns `folder` SearchResults for magnets and `file` SearchResults for individual files. The provider includes a `selector()` that drills into a magnet by calling `search(..., filters={"view":"files","magnet_id":...})` and builds a new `ResultTable` of files.
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Example commands:
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```
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# List magnets in your account
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search-file -provider alldebrid "*"
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# Open magnet id 123 and list its files
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search-file -provider alldebrid -open 123 "*"
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# Or expand via @ selection (selector handles drilling):
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search-file -provider alldebrid "*"
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@3 # selector will open the magnet referenced by row #3 and show the file table
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```
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Illustrative folder (magnet) SearchResult:
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```py
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SearchResult(
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table="alldebrid",
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title="My Magnet Title",
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path="alldebrid:magnet:123",
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detail="OK",
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annotations=["folder", "ready"],
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media_kind="folder",
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columns=[("Folder", "My Magnet Title"), ("ID", "123"), ("Status", "ready"), ("Ready", "yes")],
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full_metadata={
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"magnet": {...},
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"magnet_id": 123,
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"provider": "alldebrid",
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"provider_view": "folders",
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"magnet_name": "My Magnet Title",
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},
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)
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```
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Illustrative file SearchResult (after drilling):
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```py
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SearchResult(
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table="alldebrid",
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title="Episode 01.mkv",
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path="https://.../unlocked_direct_url",
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detail="My Magnet Title",
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annotations=["file"],
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media_kind="file",
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size_bytes=123456789,
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columns=[("File", "Episode 01.mkv"), ("Folder", "My Magnet Title"), ("ID", "123")],
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full_metadata={
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"magnet": {...},
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"magnet_id": 123,
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"magnet_name": "My Magnet Title",
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"relpath": "Season 1/E01.mkv",
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"provider": "alldebrid",
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"provider_view": "files",
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"file": {...},
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},
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)
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```
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Selection & download flows
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- Drill-in (selector): `@3` on a magnet row runs the provider's `selector()` to build a new file table and show it. The selector uses `search(..., filters={"view":"files","magnet_id":...})` to fetch file rows.
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- `download-file` integration: With a file row (http(s) path), `@2 | download-file` will download the file. The `download-file` cmdlet expands AllDebrid magnet folders and will call the provider layer to fetch file bytes as appropriate.
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- `add-file` convenience: Piping a file row into `add-file -path <dest>` will trigger add-file's provider-aware logic. If the piped item has `table == 'alldebrid'` and a http(s) `path`, `add-file` will call `provider.download()` into a temporary directory and then ingest the downloaded file, cleaning up the temp when done. Example:
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```
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# Expand magnet and add first file to local directory
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search-file -provider alldebrid "*"
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@3 # view files
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@1 | add-file -path C:\mydir
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```
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Notes & troubleshooting
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- Configure an AllDebrid API key (see `Provider/alldebrid._get_debrid_api_key()`).
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- If a magnet isn't ready the selector or `download-file` will log the magnet status and avoid attempting file downloads.
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---
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### Bandcamp (artist → discography drill-in)
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Bandcamp search supports `artist:` queries. Bandcamp's provider implements a `selector()` that detects `artist` results and scrapes the artist's page using Playwright to build a discography `ResultTable`.
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Example usage:
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```
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# Search for an artist
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search-file -provider bandcamp "artist:radiohead"
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# Select an artist row to expand into releases
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@1
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```
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Bandcamp SearchResult (artist / album rows):
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```py
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SearchResult(
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table="bandcamp",
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title="Album Title",
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path="https://bandcamp.com/album_url",
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detail="By: Artist",
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annotations=["album"],
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media_kind="audio",
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columns=[("Title","Album Title"), ("Location","Artist"), ("Type","album"), ("Url","https://...")],
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full_metadata={"artist":"Artist","type":"album","url":"https://..."}
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)
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```
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Notes:
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- Playwright is required for Bandcamp scraping. The selector will log an informative message if Playwright is missing.
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- Provider selectors are ideal when you need to replace one table with another (artist → discography).
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---
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## Provider author checklist (short)
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- Implement `search(query, limit, filters)` and return `SearchResult` objects or dicts; include useful `full_metadata` (IDs, view names) for selection/drilling.
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- If you support fetching downloadable file bytes, implement `download(result, output_dir) -> Optional[Path]`.
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- For drill-in or interactive transforms, implement `selector(selected_items, ctx=..., stage_is_last=True)` and call `ctx.set_last_result_table(...)` / `ctx.set_current_stage_table(...)`; return `True` when handled.
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- Add tests (unit/integration) that exercise search → select → download flows.
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---
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## Debugging tips
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- Use `ctx.set_last_result_table(table, payloads)` to immediately show a table while developing a selector.
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- Add `log(...)` messages in provider code to capture fail points.
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- Check `full_metadata` attached to SearchResults to pass extra context (IDs, view names, provider names).
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---
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## Quick reference
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- ResultTable location: `SYS/result_table.py`
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- Pipeline helpers: `SYS/pipeline.py` (`set_last_result_table`, `set_current_stage_table`, `get_current_stage_table_row_selection_args`)
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- CLI expansion: `CLI.py` (handles `@N`, provider selectors, and insertion of expanded stages)
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- Provider selector pattern: Implement `.selector(selected_items, ctx=..., stage_is_last=True)` in provider class.
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---
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If you'd like, I can also:
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- Add provider-specific examples (AllDebrid, Bandcamp) into this doc ✅
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- Add a short checklist for PR reviewers when adding new providers
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---
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Created by GitHub Copilot (Raptor mini - Preview) — brief guide to the ResultTable system. Feedback welcome!
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