#!/bin/bash

set -euo pipefail

print_style() {
    local style="${1:-0}"
    local color="${2:-32}"
    local message="${3:-$color}"
    echo -e "\e[${style};${color}m${message}\e[0m"
}

get_version_from_json() {
    local url="https://zoom.us/rest/download?os=linux"
    curl -s "$url" | jq -r '.result.downloadVO.zoom.version'
}

get_installed_version() {
    dpkg-query -W -f='${Version}' zoom 2>/dev/null || echo "Not installed"
}

download_zoom() {
    local version="$1"
    local filename="zoom_amd64.deb"
    print_style 1 31 "Downloading Zoom version $version"
    curl -LO "https://zoom.us/client/latest/$filename"
    echo "$filename"
}

install_dependencies() {
    local filename="$1"
    local package_names

    package_names=$(dpkg-deb -f "$filename" Depends | sed -e 's/,//g' -e 's/([^)]*)//g')

    if [[ "$package_names" == *"|"* ]]; then
        IFS='|' read -ra dep_choices <<< "$package_names"
        for choice in "${dep_choices[@]}"; do
            sudo apt-get install -y $choice && break
        done
    else
        sudo apt-get install -y $package_names
    fi
}

install_zoom() {
    local filename="$1"
    sudo dpkg -i "$filename"
    sudo apt-get install -f -y
}

update_zoom() {
    local latest_version
    local installed_version
    local filename

    latest_version=$(get_version_from_json)
    installed_version=$(get_installed_version)

    print_style 1 34 "Latest version   : $latest_version"
    print_style 1 34 "Installed version: $installed_version"

    if [ "$installed_version" = "$latest_version" ]; then
        print_style 1 32 "The current version $installed_version is already installed."
        return
    fi

    filename=$(download_zoom "$latest_version")
    install_dependencies "$filename"
    install_zoom "$filename"

    rm -f "$filename"
    print_style 1 32 "Zoom has been successfully updated to version $latest_version"
}

main() {
    if ! command -v jq &> /dev/null; then
        print_style 1 31 "jq is not installed. Please install it first."
        exit 1
    fi

    update_zoom
}

main "$@"