#!/usr/bin/env bash

# Strict: the copy over / below is the one thing this stage exists to do, and
# without set -e its failure fell through to guarded no-ops and exited 0 --
# a failed stage the installer's summary could never see.
set -euo pipefail

# --- Helper functions ---
log() { echo -e "\033[1;34m[INFO]\033[0m $*"; }
exists() { command -v "$1" >/dev/null 2>&1; }

# --- Defined Paths ---
# The default, not an assignment: an exported PANAMA_PATH from a clone at
# another location must win, or the copy over / below reads the wrong tree.
PANAMA_PATH="${PANAMA_PATH:-$HOME/.local/share/Panama}"

echo -e "\n--- Copying System & User files ---"

# dnf options are applied as individual keys rather than shipped as a file.
# config/copy once carried a whole /etc/dnf/dnf.conf, which clobbered proxies
# and mirrors a machine already had -- and set defaultyes=True system-wide, so
# every `dnf remove` for every user treated a bare Enter as yes. These two are
# performance knobs with no behavior change; anything else stays the machine's
# own business. (fastestmirror and deltarpm were dnf4-era keys dnf5 ignores,
# so they simply stop being written.)
log "Setting dnf performance options (max_parallel_downloads, keepcache)"
sudo dnf config-manager setopt max_parallel_downloads=10 keepcache=True 2>/dev/null \
  || log "Could not set dnf options; defaults apply"
log "Copying system files (udev rules, systemd drop-ins)"
sudo cp -r "$PANAMA_PATH/config/copy/." "/"

# The GPU symlink rules land via the copy above. Apply them without a reboot so
# AQ_DRM_DEVICES resolves on the first Hyprland login rather than the second.
if [[ -f /etc/udev/rules.d/99-panama-gpu.rules ]]; then
  log "Reloading udev rules for stable GPU symlinks"
  sudo udevadm control --reload
  sudo udevadm trigger --subsystem-match=drm
fi

# The power-key drop-in lands via the same copy; logind reads its config only
# at start, so without this the button keeps hard-powering-off until the next
# boot. Restarting logind is what Fedora's own updates do and current systemd
# preserves sessions across it.
if [[ -f /etc/systemd/logind.conf.d/panama-power-key.conf ]]; then
  log "Reloading logind so the power button opens the menu instead of powering off"
  sudo systemctl try-restart systemd-logind 2>/dev/null \
    || log "Could not restart logind; the power-button change applies at next boot"
fi

# The document-portal drop-in lands via the same copy. A user unit's drop-ins
# are read at daemon-reload, so without this the guard applies from the next
# login rather than from now -- and the failure it guards against is one you
# only find days later, when you next open a flatpak you had not opened yet.
if [[ -f /etc/systemd/user/xdg-document-portal.service.d/panama-stale-mount.conf ]]; then
  log "Reloading the user manager so the document-portal drop-in applies"
  systemctl --user daemon-reload || log "Could not reload the user manager"
fi

echo -e "\n--- Desktop appearance ---"
# GTK and Qt apps read these directly from gsettings; there is no settings
# daemon outside GNOME, so they must be correct rather than merely overridden.
# These match config/dot/gtk-3.0/settings.ini and quickshell's Theme.qml.
if exists gsettings; then
  log "Applying interface settings"
  gsettings set org.gnome.desktop.interface gtk-theme 'adw-gtk3-dark'
  gsettings set org.gnome.desktop.interface icon-theme 'Adwaita'
  gsettings set org.gnome.desktop.interface color-scheme 'prefer-dark'
  gsettings set org.gnome.desktop.interface font-name 'Adwaita Sans 11'
  gsettings set org.gnome.desktop.interface monospace-font-name 'VictorMono Nerd Font 10'
  gsettings set org.gnome.desktop.interface cursor-theme 'oreo_blue_cursors'
  # Deliberately NOT setting cursor-size. GNOME here is on 16 (smaller than
  # GNOME's own default of 24) and changing it would visibly alter the working
  # GNOME session. Hyprland uses XCURSOR_SIZE=24 from uwsm/env; if the cursor
  # feels too large there, change that one value rather than this one.
fi

echo -e "\n--- Hyprland session services ---"
# Deliberately NOT enabling these.
#
# hyprpaper / hypridle / hyprpolkitagent / vicinae all ship units that are
# WantedBy=graphical-session.target -- and that target is active under GNOME
# too. Enabling them would start hypridle alongside GNOME's own idle handling
# (two daemons blanking and locking the screen on different timers) and start
# hyprpaper where there is no layer shell for it to draw on.
#
# Instead hypr/autostart.lua runs `systemctl --user start ...` on
# hyprland.start, which scopes them to the Hyprland session. They still get the
# correct uwsm activation environment and still stop in order, because they are
# PartOf=graphical-session.target.
log "Hyprland services are started per-session by hypr/autostart.lua, not enabled globally"

# espanso is the exception to the rule above: text expansion is wanted under
# any compositor and conflicts with nothing GNOME runs, and upstream's own
# mechanism is a registered user unit. The RPM ships no unit -- without this,
# the package installs, the config links, and no trigger ever fires.
# `service register` writes and enables the unit and is idempotent on re-runs;
# autostart.lua also starts it so the first Hyprland login after a fresh
# install expands text without waiting for the next one.
if exists espanso && ! systemctl --user cat espanso.service >/dev/null 2>&1; then
  log "Registering the espanso text-expansion service"
  espanso service register >/dev/null 2>&1 || log "Could not register espanso"
fi

# Notification daemons must NOT be installed: mako, dunst and swaync all
# register Name=org.freedesktop.Notifications for D-Bus activation, which races
# Quickshell's own notification server at login. Whoever wins keeps the name.
for pkg in mako dunst SwayNotificationCenter; do
  if rpm -q "$pkg" >/dev/null 2>&1; then
    log "WARNING: $pkg is installed and will fight Quickshell for the notification D-Bus name."
    log "         Fix with: systemctl --user mask ${pkg,,}.service"
  fi
done

# The launcher theme is NOT set here any more. vicinae.json selects one theme
# per system appearance -- panama-dark and panama-light, both rendered from the
# active Panama theme by quickshell/scripts/panama-theme-apps -- and
# `vicinae theme set` replaces that pair with a single fixed name. It would pin
# the launcher to one palette for good, and it would do it by rewriting
# vicinae.json, which is symlinked out of this repository.

# A machine with a battery gets managed idle timings from the start. The
# shipped hypridle.conf deliberately never suspends -- correct for a desktop,
# and exactly wrong for a laptop in a bag. panama-idle generates the
# power-source-aware config and points hypridle at it with a drop-in; it does
# not start hypridle here (the Hyprland session does that), so running it
# under GNOME during install is safe. A desktop skips this entirely and keeps
# the shipped file, as before.
if "${PANAMA_PATH:-$HOME/.local/share/Panama}/bin/panama-hw" battery 2>/dev/null; then
  log "Battery detected: enabling managed idle timings (suspend on battery works out of the box)"
  "${PANAMA_PATH:-$HOME/.local/share/Panama}/config/dot/quickshell/scripts/panama-idle" install \
    || log "Could not enable managed idle timings; the Power page can turn them on later"
fi
