# Log Analyzer with Time-Only Timestamp Parsing and Print Report

**Date:** 2026-01-19
**Project:** video-player-log-analyzer
**Status:** resolved
**Tags:** html, javascript, chart.js, log-parsing, regex, reporting, moonlight-drive-in

## Context
Jess wanted a way to see how the Moonlight Drive-In player is actually used — what gets played, when, and how often — from the player's log files, plus a printable activity report. The first version parsed nothing useful: its regexes expected full date-time stamps, but the player logs only contain time-of-day.

## Key Decisions
- **Single self-contained HTML file** — open locally in a browser, load log files, no server or install. Fits a Windows host with no dev tooling.
- **Verify the real log format before writing parsers** — logs use `HH:MM:SS.mmm` with no date; the date is taken from the log **filename** (or scanned from content) instead.
- **Group by date *and* hour** — earlier charts aggregated everything into one set of hourly totals, hiding day-to-day patterns.
- **Chart.js** for charts — simple, CDN-loadable, good enough for dashboards.
- **Dedicated print report** with print-friendly styling rather than printing the dashboard as-is.

## Technical Details
- File: `video_player_log_analyzer.html` (HTML + inline JS/CSS, Chart.js).
- Input: Moonlight player log files; date derived from filename, time from each line.
- Views: statistics dashboard, interactive charts (hourly activity per date), video playback analytics, print-ready activity report.

## Code Changes
- `video_player_log_analyzer.html` — new; parser, dashboards, charts, print report.
- `README.md` — usage docs.

## Open Questions / Next Steps
- Parsing is tied to the current log line format — if the player's logging changes, update the regexes first.
- Possible: include NFC client / LEGO Dimensions portal events once those log to the same place.

## Artifacts
- `3786959` — Initial commit - Video Player Log Analyzer with comprehensive print report feature
- Related repo: https://gitea.hideawaygaming.com.au/jessikitty/moonlight-drive-in