onepiece

A web dashboard that tracks your One Piece viewing progress on Crunchyroll.

Features

• Connects to the Crunchyroll API to fetch your One Piece watch history
• Displays episodes watched, progress percentage, and current position
• Calculates watch rate (episodes/day) and estimates when you'll catch up
• Tracks viewing streaks (current and longest consecutive days)
• Auto-refreshes data every hour in the background

Quick Start

Prerequisites

• A Crunchyroll account with One Piece in your watch history

Run with Go

export ONEPIECE_CR_EMAIL="[email protected]"
export ONEPIECE_CR_PASSWORD="your-password"
go run . web

Open http://localhost:8080 in your browser.

Run with Docker

docker build -t onepiece .
docker run -p 8080:8080 \
  -e ONEPIECE_CR_EMAIL="[email protected]" \
  -e ONEPIECE_CR_PASSWORD="your-password" \
  onepiece

Configuration

Environment Variable	Flag	Default	Description
ONEPIECE_CR_EMAIL	--email	(required)	Crunchyroll account email
ONEPIECE_CR_PASSWORD	--password	(required)	Crunchyroll account password
ONEPIECE_ADDR	--addr	:8080	HTTP listen address
ONEPIECE_POLL_INTERVAL	--poll-interval	1h	Data refresh interval
ONEPIECE_HEALTHCHECK_UUID	--healthcheck-uuid		Healthchecks.io check UUID for monitoring
ONEPIECE_POSTHOG_KEY	--posthog-key		PostHog project API key for analytics
ONEPIECE_POSTHOG_HOST	--posthog-host		PostHog API host

Analytics

Optional PostHog analytics can be enabled by setting ONEPIECE_POSTHOG_KEY or passing --posthog-key.

• ONEPIECE_POSTHOG_KEY or --posthog-key enables the PostHog client when set
• ONEPIECE_POSTHOG_HOST or --posthog-host overrides the PostHog API host
• If ONEPIECE_POSTHOG_HOST is unset, the app defaults to https://eu.i.posthog.com

Monitoring

The dashboard supports optional healthchecks.io monitoring. When configured, each poll cycle sends:

• A start signal before fetching data (enables execution time tracking)
• A success signal with diagnostics (profile name, episodes watched, duration) on completion
• A failure signal with error details if the poll fails

Signals use run IDs to correlate start/completion for accurate duration measurement, and include automatic retries with exponential backoff.

Commands

• onepiece web — Start the web dashboard
• onepiece version — Print version information