Add timeline

[ildyria]

This pull request introduces a comprehensive implementation of a timeline feature for photos, including backend logic, new enums, exceptions, and controller methods. The changes are organized into several themes: new timeline functionality, enhancements to enums, and updates to request handling and resources.

New Timeline Functionality

• app/Actions/Photo/Timeline.php: Added a new Timeline class that provides methods for querying photos by timeline, counting photos based on date or photo reference, and retrieving distinct timeline dates. It supports granularities like year, month, day, and hour.
• app/Http/Controllers/Gallery/TimelineController.php: Introduced a TimelineController to handle timeline-related requests, including fetching photos, initializing the timeline, and retrieving timeline dates.

Enhancements to Enums

• app/Enum/TimelinePhotoGranularity.php and app/Enum/TimelineAlbumGranularity.php: Added a format method to both enums, allowing retrieval of ISO date formats based on granularity. [1] [2]
• app/Exceptions/Internal/TimelineGranularityException.php: Added a new exception to handle invalid timeline granularities.

Updates to Request Handling and Resources

• app/Http/Requests/Timeline/GetTimelineRequest.php and app/Http/Requests/Timeline/IdOrDatedTimelineRequest.php: Added new request classes for validating and processing timeline-related API inputs, including support for photo IDs and date-based queries. [1] [2]
• app/Http/Resources/Models/Utils/TimelineData.php: Enhanced the TimelineData utility to support date-based timeline entries and handle granularities more robustly.
• app/Http/Resources/Timeline/InitResource.php: Added an initialization resource for the timeline page, including configuration and rights information.

These changes collectively enable robust timeline functionality, supporting both granular and flexible date-based photo organization.

[codecov[bot]]

Codecov Report

:x: Patch coverage is 70.12195% with 49 lines in your changes missing coverage. Please review. :white_check_mark: Project coverage is 90.49%. Comparing base (92c808b) to head (d2eed6e). :warning: Report is 15 commits behind head on master.

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[coderabbitai[bot]]

📝 Walkthrough

Walkthrough

Adds a Timeline feature: new Timeline action, controller endpoints and routes, request validators, resources, enums and exception, config keys and migrations, middleware/route-cache updates, web route, and tests; supports configurable granularity, ordering, NSFW filtering, date/photo anchors, and cross-database date formatting.

Changes

Cohort / File(s)	Change Summary
Timeline core action app/Actions/Photo/Timeline.php	New Timeline class building timeline photo queries with eager loads, applying PhotoQueryPolicy and hide_nsfw_in_timeline, ordering by configured column with safe defaults, counting younger items by date/photo, and aggregating timeline dates by granularity with cross‑DB formatting.
Controllers & routes app/Http/Controllers/Gallery/TimelineController.php, routes/api_v2.php, routes/web_v2.php	New Gallery timeline endpoints (/Timeline, /Timeline::dates, /Timeline::init) with cache_control; added web route /timeline/{date?}/{photoId?}.
Requests & attributes app/Http/Requests/Timeline/GetTimelineRequest.php, app/Http/Requests/Timeline/IdOrDatedTimelineRequest.php, app/Contracts/Http/Requests/RequestAttribute.php	New GetTimelineRequest (authorization based on auth and configs) and IdOrDatedTimelineRequest (accepts photo ID or date; dynamic date_format validation by configured granularity; resolves Photo/Carbon); added DATE_ATTRIBUTE constant.
Resources & data shaping app/Http/Resources/Timeline/InitResource.php, app/Http/Resources/Timeline/TimelineResource.php, app/Http/Resources/GalleryConfigs/InitConfig.php, app/Http/Resources/Models/Utils/TimelineData.php	New InitResource and TimelineResource (wraps paginated PhotoResource, sets prev/next ids); InitConfig exposes is_timeline_page_enabled; TimelineData::fromDate added, unified quick-access format keys used, and TimelineGranularityException applied for invalid granularities.
Enums & exception app/Enum/TimelineAlbumGranularity.php, app/Enum/TimelinePhotoGranularity.php, app/Exceptions/Internal/TimelineGranularityException.php	Added format() to granularity enums returning PHP date formats; DEFAULT/DISABLED now throw TimelineGranularityException; new TimelineGranularityException class added.
Config integrity & route cache app/Http/Middleware/ConfigIntegrity.php, app/Metadata/Cache/RouteCacheManager.php	SE_FIELDS extended with quick-access date format keys; RouteCacheManager registers Timeline routes and cache configs (init/dates user-dependent under SETTINGS).
Migrations / config seed database/migrations/2025_06_13_121811_default_view_gallery_timeline.php, database/migrations/2025_06_13_122020_reorder_timeline_config.php	New migration seeding timeline config keys (enable flag and quick-access formats) and a migration reordering/categorizing timeline config entries with explicit orders and expert flags.
Tests tests/Feature_v2/Timeline/TimelineTest.php	New feature tests verifying unauthorized vs public access to timeline endpoints, init payload contents, and date/photo parameter behavior.

Estimated code review effort

🎯 4 (Complex) | ⏱️ ~60 minutes

Poem

I nibble timestamps with velvet feet,
Grouping years and months into a sweet treat.
IDs and dates I hop between,
Stitching moments, neat and clean.
A tiny rabbit maps the timeline beat 🥕

[!TIP]

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📥 Commits

Reviewing files that changed from the base of the PR and between db12da27b5ff61bfa274fa6a63c814c4ffc7f569 and d2eed6e3bbc38264eb311f1b74e7d83308b3d8a8.

📒 Files selected for processing (1)

• app/Http/Controllers/Gallery/TimelineController.php (1 hunks)

🚧 Files skipped from review as they are similar to previous changes (1)

• app/Http/Controllers/Gallery/TimelineController.php

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• GitHub Check: 3️⃣ PHP dist / 8.3 - sqlite
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✨ Finishing Touches

• [ ] 📝 Generate Docstrings

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• [ ] Create PR with unit tests
• [ ] Post copyable unit tests in a comment
• [ ] Commit unit tests in branch timeline/backend

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