DMM schedule checker

DMM schedule checker continuously monitors the schedule of your favorite teachers, and notifies via LINE whenever new slots are available.

Installation

You need to have Docker CLI, AWS CLI and Terraform installed on your machine.

Generate LINE Notify access token

Then, you need to generate LINE Notify access token.

• go to mypage
• click "Generate token"
• select "1-on-1 chat with LINE Notify" and generate

Let's save the generated token in the .env.local file.

echo "LINE_NOTIFY_ACCESS_TOKEN=[YOUR_ACCESS_TOKEN]" >> .env.local

Deploy backend API

You can deploy backend API for DMM schedule checker to your AWS account as follows.

# set envs
AWS_REGION=ap-northeast-1
ACCOUNT_ID=$(aws sts get-caller-identity --query "Account" --output text)

# create S3 bucket to store tfstate
aws s3 mb s3://dmm-schedule-checker-${ACCOUNT_ID} --region ${AWS_REGION}

# initialize terraform
terraform init \
    -backend-config="bucket=dmm-schedule-checker-${ACCOUNT_ID}" \
    -backend-config="region=${AWS_REGION}" -reconfigure

# deploy application
terraform apply -auto-approve

Usage

To add/delete your favorite teacher, you can simple call the API as follows. Currently, we don't have frontend application for it.

# API endpoint
ENDPOINT_URL=https://$(terraform output --raw endpoint)

# add teacher
curl -X POST -H "Content-Type: application/json" \
    -d '{"id": "5_DIGIT_TEACHER_ID"}' ${ENDPOINT_URL}/teachers

# delete teacher
curl -X DELETE ${ENDPOINT_URL}/teachers/5_DIGIT_TEACHER_ID

The application checks the schedule of enrolled teachers every 20 seconds, and notifies via LINE whenever new slots are available.

Clean up

You can clean up all resources as follows.

# set envs
AWS_REGION=ap-northeast-1
ACCOUNT_ID=$(aws sts get-caller-identity --query "Account" --output text)

# clean up api resources
terraform destroy -auto-approve

# remove tfstate file and s3 bucket
aws s3 rm s3://dmm-schedule-checker-${ACCOUNT_ID}/terraform.tfstate --region ${AWS_REGION}
aws s3 rb s3://dmm-schedule-checker-${ACCOUNT_ID} --region ${AWS_REGION}