#!/usr/bin/env bash

set -euo pipefail

packages=(
    age
    atop
    autossh
    bat
    borgbackup
    borgmatic
    btrfs-assistant
    calibre
    cmake
    curl
    diff-so-fancy
    duf
    emacs
    ethtool
    eza
    fastfetch
    fd-find
    fzf
    git
    git-core
    golang
    hdparm
    htop
    hugo
    jc
    jq
    just
    kbackup
    kpeoplevcard
    lagrange
    ldns
    libtool
    lsof
    lynx
    neochat
    neovim
    nmap
    node-exporter
    nodejs
    nu
    pipx
    poetry
    python3-devel
    python3-pip
    qbittorrent
    ripgrep
    rsync
    rsyslog
    shfmt
    ShellCheck
    tcpdump
    tealdeer
    tokodon
    trash-cli
    uv
    vlc
    w3m
    wireshark
    wl-clipboard
    yakuake
    zsh
)

copr_repos=(
    atim/starship
    hyperreal/better_fonts
    varlad/yazi
    varlad/zellij
)

flatpak_packages=(
    com.discordapp.Discord
    com.github.tchx84.Flatseal
    io.podman_desktop.PodmanDesktop
)

pipx_packages=(
    "black"
    "bpython"
    "isort"
    "pyright"
    "ansible --include-deps"
)

services_enable=(
    atop.service
    atopacct.service
    atop-rotate.timer
    prometheus-node-exporter.service
    rsyslog.service
    sshd.service
    systemd-networkd
    tailscaled.service
)

services_disable=(
    avahi-daemon.service
    bluetooth.service
    cups.service
    cups-browsed.service
    NetworkManager.service
    sddm.service
    wpa_supplicant.service
)

function install_packages() {
    echo ""
    echo "--> BEGIN INSTALLING PACKAGES..."
    sudo dnf install -y "${packages[@]}"
}

function install_devel_groups() {
    echo ""
    echo "--> INSTALLING DEVELOPMENT PACKAGE GROUPS..."
    sudo dnf install -y '@c-development' '@development-tools' '@container-management'
}
function enable_copr_repos() {
    echo ""
    echo "--> BEGIN ENABLING COPR REPOS..."
    for repo in "${copr_repos[@]}"; do sudo dnf copr enable -y "$repo"; done
}

# Depends: enable_copr_repos
function install_copr_packages() {
    echo ""
    echo "--> BEGIN INSTALLING COPR PACKAGES..."
    sudo dnf install -y starship fontconfig-font-replacements yazi zellij
}

function install_rpmfusion_repos() {
    echo ""
    echo "--> INSTALLING RPMFUSION REPOS..."
    sudo dnf install -y "https://mirrors.rpmfusion.org/free/fedora/rpmfusion-free-release-$(rpm -E %fedora).noarch.rpm" "https://mirrors.rpmfusion.org/nonfree/fedora/rpmfusion-nonfree-release-$(rpm -E %fedora).noarch.rpm"
}

# Depends: install_rpmfusion_repos
function install_rpmfusion_packages() {
    echo ""
    echo "--> INSTALLING RPMFUSION PACKAGES..."
    sudo dnf install -y --allowerasing ffmpeg-libs
}

function install_charm_packages() {
    echo ""
    echo "--> INSTALLING CHARM PACKAGES..."
    echo '[charm]
name=Charm
baseurl=https://repo.charm.sh/yum/
enabled=1
gpgcheck=1
gpgkey=https://repo.charm.sh/yum/gpg.key' | sudo tee /etc/yum.repos.d/charm.repo
    sudo rpm --import https://repo.charm.sh/yum/gpg.key
    sudo dnf install -y gum
}

function install_tailscale() {
    echo ""
    echo "--> INSTALLING TAILSCALE..."
    curl -fsSL https://tailscale.com/install.sh | sh
}

# Depends: install_tailscale
function enable_tailscale() {
    echo ""
    echo "--> ENABLING TAILSCALE..."
    sudo tailscale up
}

function enable_flathub() {
    echo ""
    echo "--> ENABLING FLATHUB..."
    flatpak remote-add --if-not-exists flathub https://dl.flathub.org/repo/flathub.flatpakrepo
}

# Depends: enable_flathub
function install_flatpaks() {
    echo ""
    echo "--> INSTALLING FLATPAKS..."
    for pkg in "${flatpak_packages[@]}"; do flatpak install -y "$pkg"; done
}

# Depends: install_packages
function install_pipx_packages() {
    echo ""
    echo "--> INSTALLING PIPX PACKAGES..."
    for pkg in "${pipx_packages[@]}"; do pipx install "$pkg"; done
}

function setup_networkd_conf() {
    echo ""
    echo "--> SETTING UP SYSTEMD-NETWORKD CONFIG..."
    echo '[Match]
Name=eno1

[Network]
DHCP=yes
DNS=100.100.100.100
DNSSEC=allow-downgrade

[DHCPv4]
UseDNS=no' | sudo tee /etc/systemd/network/eno1.network
}

# After: setup_networkd_conf
function setup_resolv_conf() {
    echo ""
    echo "--> SETTING UP RESOLV CONF..."
    sudo rm -v /etc/resolv.conf
    sudo ln -sf /var/run/systemd/resolve/resolv.conf /etc/resolv.conf
    sudo systemctl restart systemd-resolved
}

# Depends: enable_tailscale
function setup_rsyslog_conf() {
    echo ""
    echo "--> SETTING UP RSYSLOG CONFIG..."
    echo '# Forward to main monitoring node (nas.lyrebird-marlin.ts.net)
*.* action(type="omfwd" target="100.112.241.12" port="514" protocol="tcp"
    action.resumeRetryCount="100"
    queue.type="linkedList" queue.size="10000")' | sudo tee /etc/rsyslog.d/00forward-to-nas.conf
}

# After: setup_networkd_conf
function disable_services() {
    echo ""
    echo "--> DISABLING SYSTEMD SERVICES..."
    for service in "${services_disable[@]}"; do sudo systemctl disable --now "$service"; done
}

# After:
# - setup_networkd_conf
# - install_packages
function enable_services() {
    echo ""
    echo "--> ENABLING SYSTEMD SERVICES..."
    for service in "${services_enable[@]}"; do sudo systemctl enable --now "$service"; done
}

function disable_ipv6() {
    echo ""
    echo "--> DISABLING IPV6..."
    if ! sudo grep "ipv6.disable=1" /boot/grub2/grub.cfg; then
        sudo grubby --args=ipv6.disable=1 --update-kernel=ALL
        sudo grub2-mkconfig -o /boot/grub2/grub.cfg
    else
        echo "IPv6 already disabled."
    fi
}

function setup_fstab() {
    echo ""
    echo "--> SETTING UP FSTAB..."
    sudo mkdir /mnt/borgbackup /mnt/quick-backup
    if ! grep "ecf44876-2e4e-46ad-9f12-fc516c8ace2d" /etc/fstab; then
        echo "UUID=ecf44876-2e4e-46ad-9f12-fc516c8ace2d /mnt/borgbackup btrfs defaults,subvol=@borgbackup,compress=zstd:1,x-systemd.device-timeout=20 0 0" | sudo tee -a /etc/fstab
        echo "UUID=ecf44876-2e4e-46ad-9f12-fc516c8ace2d /mnt/quick-backup btrfs defaults,suvol=@quick-backup,compress=zstd:1,x-systemd.device-timeout=20 0 0" | sudo tee -a /etc/fstab
    else
        echo "/etc/fstab already configured."
    fi
    sudo systemctl daemon-reload
    sudo restorecon -Rv /mnt/borgbackup
    sudo restorecon -Rv /mnt/quick-backup
    sudo mount -av
}

# Depends:
# - install_packages
# - setup_fstab
function setup_borgmatic_config() {
    echo ""
    echo "--> SETTING UP BORGMATIC CONFIG..."
    sudo mkdir /etc/borgmatic
    sudo cp -v /mnt/quick-backup/borgmatic-config.yaml /etc/borgmatic/config.yaml
}

# Depends:
# - install_packages
# - setup_fstab
function copy_quick_backup() {
    echo ""
    echo "--> COPYING QUICK BACKUP..."
    rsync -aAXPz /mnt/quick-backup/jas/ /home/jas
}

# Depends: copy_quick_backup
function build_bat_cache() {
    echo ""
    echo "--> BUILDING BAT CACHE..."
    bat cache --build
}

# Depends: install_packages
function update_tealdeer_cache() {
    echo ""
    echo "--> UPDATING TEALDEER CACHE..."
    tldr --update
}

# Depends: enable_tailscale
function setup_firewalld() {
    echo ""
    echo "--> SETTING UP FIREWALLD..."
    if ! sudo firewall-cmd --get-zones | grep "tailnet"; then
        sudo firewall-cmd --permanent --new-zone=tailnet
        sudo firewall-cmd --permanent --zone=tailnet --add-interface=tailscale0
        sudo firewall-cmd --permanent --zone=tailnet --add-port=1025-65535/tcp
        sudo firewall-cmd --permanent --zone=tailnet --add-port=1025-65535/udp
        sudo firewall-cmd --permanent --zone=tailnet --add-service=ssh
    else
        echo "firewalld tailnet zone already configured"
    fi
    sudo firewall-cmd --permanent --zone=FedoraWorkstation --remove-service={dhcpv6-client,samba-client}
    sudo firewall-cmd --reload
}

function install_rclone() {
    echo ""
    echo "--> INSTALLING LATEST RCLONE..."
    sudo -v
    curl https://rclone.org/install.sh | sudo bash
    command -v rclone
}

# Depends: install_rclone copy_quick_backup
function enable_sync_to_remotes() {
    systemctl --user enable --now sync_to_remotes.timer
}

install_packages
install_devel_groups
enable_copr_repos
install_copr_packages
install_rpmfusion_repos
install_rpmfusion_packages
install_charm_packages
install_tailscale
enable_tailscale
enable_flathub
install_flatpaks
install_pipx_packages
setup_networkd_conf
setup_resolv_conf
setup_rsyslog_conf
disable_services
enable_services
disable_ipv6
setup_fstab
setup_borgmatic_config
copy_quick_backup
build_bat_cache
update_tealdeer_cache
setup_firewalld
install_rclone
enable_sync_to_remotes