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Lyricat

Lyricat is a Discord bot that provides querying service for things related to the game Lyrica.

Deploy

Follow the steps.

  1. Clone this repo and run bundle install.
  2. Use AssetRipper to extract Lyrica's APK. Specify the paths to useful files in config.yml or copy the useful files to the paths specified in config.yml.
  3. Specify every required environment variables. See environment variables.
  4. Copy config.yml to the dir specified by LYRICAT_DATA_DIR.
  5. Run ruby main.rb.

Environment variables

Name Description
LYRICAT_DATA_DIR The dir containing database and config files. Defaults to ./data.
LYRICAT_RES_DIR The dir containing resource files. The base dir of items in res in config. Defaults to ./res.
LYRICAT_CONFIG The path to config file. Relative to LYRICAT_DATA_DIR. Defaults to config.yml.
LYRICAT_DAN The path to the file specifying dan courses. Relative to LYRICAT_DATA_DIR. Defaults to dan.yml.
LYRICAT_ALIASES The path to the file specifying aliases. Relative to LYRICAT_DATA_DIR. Defaults to aliases.yml.
LYRICAT_THREAD_COUNT The number of threads to use for parallel HTTP requests. Defaults to 8.
LYRICAT_RETRY_COUNT The number of retries when communicating with Lyrica's server. Defaults to 3.
LYRICAT_STATIC_SESSION_TOKEN (Required) The session token used to retrieve leaderboards.
LYRICAT_DISCORD_TOKEN (Required) The Discord bot token.
LYRICAT_DISCORD_MAINTAINER_ID The Discord user ID of the maintainer.
LYRICAT_SKIP_COMMAND_REGISTRATION Skip command registration. Command registration is necessary for a new bot or when there is command update, but it makes startup very slow. Defaults to false.

Docker deploy

  1. Download docker-compose.yml.example and rename it to docker-compose.yml.
  2. Download data/config.yml and put it in the data dir (specified in the volume mapping in docker-compose.yml).
  3. Specify every required environment variables in docker-compose.yml.
  4. Use AssetRipper to extract Lyrica's APK, and put the useful files in the res dir (specified in the volume mapping in docker-compose.yml).
  5. Run docker compose up -d.

If you want to build the image yourself, clone this repo and rename docker-compose.yml.example to docker-compose.yml. Change image: ulysseszhan/lyricat:latest to build: .. Run docker compose build.

Updating

Simply run docker compose pull && docker compose up -d.

Migrating

Simply copy over data.db in the data dir (specified in the volume mapping in docker-compose.yml).

License

AGPL-3.0-only.