chore: first working version with integration test

scripts/init_db.sh

@@ -0,0 +1,46 @@
+#!/usr/bin/env bash
+set -x
+set -eo pipefail
+
+if ! [ -x "$(command -v psql)" ]; then
+  echo >&2 "Error: psql is not installed."
+  exit 1
+fi
+
+if ! [ -x "$(command -v sqlx)" ]; then
+  echo >&2 "Error: sqlx is not installed."
+  echo >&2 "Use:"
+  echo >&2 "    cargo install --version=0.5.7 sqlx-cli --no-default-features --features postgres"
+  echo >&2 "to install it."
+  exit 1
+fi
+
+DB_USER=${POSTGRES_USER:=postgres}
+DB_PASSWORD="${POSTGRES_PASSWORD:=password}"
+DB_NAME="${POSTGRES_DB:=newsletter}"
+DB_PORT="${POSTGRES_PORT:=5432}"
+
+# Allow to skip container run if a containerized Postgres database is already running
+if [[ -z "${SKIP_DB_RUN}" ]]
+then
+  podman run \
+      -e POSTGRES_USER=${DB_USER} \
+      -e POSTGRES_PASSWORD=${DB_PASSWORD} \
+      -e POSTGRES_DB=${DB_NAME} \
+      -p "${DB_PORT}":5432 \
+      -d postgres \
+      postgres -N 1000
+fi
+
+until PGPASSWORD="${DB_PASSWORD}" psql -h "localhost" -U "${DB_USER}" -p "${DB_PORT}" -d "postgres" -c '\q'; do
+  >&2 echo "Postgres is still unavailable - sleeping"
+  sleep 1
+done
+
+>&2 echo "Postgres is up and running on port ${DB_PORT} - running migrations now!"
+
+export DATABASE_URL=postgres://${DB_USER}:${DB_PASSWORD}@localhost:${DB_PORT}/${DB_NAME}
+sqlx database create
+sqlx migrate run
+
+>&2 echo "Postgres has been migrated, ready to go!"