93 lines
2.7 KiB
Markdown
93 lines
2.7 KiB
Markdown
# State Internals
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This document describes filesystem state in `internal/state`.
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## Purpose
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`internal/state` owns managed artifact paths, atomic JSON writes, persisted
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metadata, prior snapshot lookup, and read-only artifact inspection helpers.
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## Inputs And Outputs
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Inputs:
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- workspace configuration
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- resolved report definition and valid period
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- briefing package
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- prompt input data package
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- Scriptorium render result
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- rendered report path preparation request
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- RunID for inspection lookups
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Outputs:
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- briefing snapshot JSON path
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- prompt input data package JSON path
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- render preflight JSON path
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- managed Markdown report path
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- metadata JSON path
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- prior comparable snapshot metadata
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- loaded briefing or data package
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- recent report records for inspection
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## Boundaries
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- This package owns managed workspace layout, path validation, filesystem
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writes, and metadata reads.
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- It does not fetch weather data, derive forecasts, build prompt input content,
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compare briefing contents, invoke Scriptorium, or parse CLI flags.
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## Config Fields Used
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- `workspace.root`
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- `workspace.snapshots_dir`
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- `workspace.reports_dir`
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- `workspace.data_packages_dir`
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- `workspace.preflight_dir`
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Workspace subdirectories must be relative paths that stay under
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`workspace.root`.
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## External Adapters Used
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- local filesystem
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## State Or Manifest Behavior
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Managed paths are grouped by report family and valid-period start date for JSON
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artifacts. Reports are written under the report group. Metadata is stored beside
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briefing snapshots and links briefing, data package, preflight, and report
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paths. Report listing walks metadata files under the snapshots directory.
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Prior snapshot lookup reads metadata and selects the latest earlier compatible
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snapshot. Daily Today and Daily Tomorrow are compatible with each other for the
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same valid local date. 3-Day Outlook compares with prior 3-Day snapshots for
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the same valid local date. Weekend Outlook compares with prior Weekend snapshots
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for the same weekend window. Storm Report currently has no prior lookup.
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## Skip And Resume Behavior
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There is no resume workflow. Missing metadata directories return no inspection
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records or no prior snapshot rather than creating state.
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## Failure Behavior
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- Invalid workspace paths return validation errors.
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- Missing required metadata fields prevent metadata writes.
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- JSON writes use a temporary file followed by rename where practical.
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- Read and decode failures include path context.
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- Unknown RunIDs produce an actionable lookup error.
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## Tests
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Inspect:
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- `internal/state/filesystem_test.go`
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- `internal/app/app_test.go`
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## Invariants
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- Managed paths stay under the configured workspace root.
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- Metadata links artifacts produced for a run.
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- Prior lookup is based on structured metadata, not rendered report text.
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