Query Taiwan Holiday

Query Taiwan Holiday

This is a concise, repository-scoped copy. The canonical, fully detailed version of this skill lives at the repository root: skill/SKILL.md. Both describe the same query/interpret/failure-handling behavior; prefer whichever copy the host surfaces.

Query

1. Require one exact ASCII ISO date (YYYY-MM-DD). Reject whitespace, timestamps, slashes, impossible dates, and values that do not round-trip through a calendar-aware date parser.

2. Try trusted candidates in order, falling through to the next on failure rather than stopping: (a) an already-installed holidaytw on PATH; (b) when Node.js 20 or newer and npm are available, npx --yes holidaytw --json YYYY-MM-DD from the officially published npm package; (c) the official install.sh one-liner on macOS/Linux or install.ps1 on Windows PowerShell, then re-resolving the installed path (PATH, or the default/--dir/-InstallDir location) if it is not yet on PATH. The npm wrapper downloads the matching native binary from the official GitHub Release and verifies checksums.txt. A failed candidate is not a final failure — it only means try the next one, which (including the API fallback below) may still return valid data. Only use official sources: the holidaytw npm package, github.com/doggy8088/holidaybook, raw.githubusercontent.com/doggy8088/holidaybook, and https://holiday.gh.miniasp.com.

3. Query with the resolved CLI for structured output:

   holidaytw --json YYYY-MM-DD
   

   Use holidaytw YYYY-MM-DD for a concise human-readable answer. Add --base-url https://mirror.example to either form when a trusted mirror is required.

4. If every candidate in step 2 failed or is unsupported here (no network, unsupported OS/arch, sandboxed shell, permission errors), fall back to the validated date against the static API:

   curl --fail-with-body --silent --show-error --location \
     --proto '=https' --tlsv1.2 --connect-timeout 10 --max-time 30 \
     'https://holiday.gh.miniasp.com/YYYY-MM-DD.json'
   

   Substitute only the already validated date; keep the URL quoted. Do not disable TLS verification.

5. Parse JSON rather than scraping text. Require one object, a matching date (the API may use YYYYMMDD), and a present, recognized isHoliday value.

Interpret

• Treat isHoliday: true or 1 as a holiday.
• Treat isHoliday: false or 0 as a workday.
• Do not infer status from weekday/weekend alone; Taiwan can designate weekend workdays (補行上班日) and compensatory holidays.
• The two sources use different field shapes for the same data:
  • holidaytw --json: date is YYYY-MM-DD, isHoliday is a boolean, and the category field is category.
  • Static JSON (https://holiday.gh.miniasp.com/YYYY-MM-DD.json): date is YYYYMMDD, isHoliday is 0/1, and the category field is holidaycategory.
• Preserve useful structured fields: date, name, the category field for that source, and description. Workdays can also carry them (for example 軍人節 is isHoliday false with a name and description). For automation, return the raw or requested JSON shape instead of prose unless asked.
• Treat missing, null, or unrecognized isHoliday as unknown data, never as a workday.

Handle failures

• A nonzero exit from any single trusted candidate (CLI, an installer script, or one curl attempt) is not, by itself, a reason to report failure — fall through to the next candidate per step 2. Only report retrieval failure and make no holiday-status claim once every candidate, including the static API fallback, has failed.
• CLI exit codes: 0 success, 2 bad arguments or invalid date, 1 runtime failure. With --json, failures print {"error":{"code":"...","message":"..."}} on stderr, where code is one of usage, invalid_date, invalid_configuration, http_error, invalid_response, timeout, canceled, network_error, output_error.
• Distinguish HTTP 404 or unavailable data from DNS, TLS, timeout, and other transport errors when stderr provides that detail.
• Reject malformed JSON, non-object responses, date mismatches, and missing required fields explicitly.
• Never silently substitute a nearby date or guess from the calendar.