Install latest protonmail bridge on Ubuntu

install_latest_protonmail_bridge.sh

# Import public key as the first time
pubkey_url=$(
    curl -s \
    -H "Accept: application/vnd.github+json" \
    -H "X-GitHub-Api-Version: 2022-11-28" \
    https://api.github.com/repos/ProtonMail/proton-bridge/releases/latest \
        | grep "browser_download_url" | grep -E "pubkey.gpg\"$" \
        | awk -F "\"" '{print $4}'
)
pubkey_file=$(basename "$pubkey_url")
curl -sOL "$pubkey_url"

gpg --import "$pubkey_file"

# after grep, output is like below:
# "browser_download_url": "https://github.com/<owner>/<repo>/releases/download/<tag>/xxx.ext"
dev_dl_url=$(
    curl -s \
    -H "Accept: application/vnd.github+json" \
    -H "X-GitHub-Api-Version: 2022-11-28" \
    https://api.github.com/repos/ProtonMail/proton-bridge/releases/latest \
        | grep "browser_download_url" | grep -E "amd64.deb\"$" \
        | awk -F "\"" '{print $4}'
)
dev_sig_dl_url=$(
    curl -s \
    -H "Accept: application/vnd.github+json" \
    -H "X-GitHub-Api-Version: 2022-11-28" \
    https://api.github.com/repos/ProtonMail/proton-bridge/releases/latest \
        | grep "browser_download_url" | grep -E "amd64.deb.sig\"$" \
        | awk -F "\"" '{print $4}'
)
echo "File to download: $dev_dl_url"

dev_dl_file=$(basename "$dev_dl_url")
dev_sig_dl_file=$(basename "$dev_sig_dl_url")
curl -sL "$dev_dl_url" -o "$dev_dl_file"
curl -sL "$dev_sig_dl_url" -o "$dev_sig_dl_file"

# Show package information
dpkg-deb --info "$dev_dl_file"

# TODO ask for continue

if gpg --verify "$dev_sig_dl_file"; then
    sudo apt install "$dev_dl_file"
fi