#!/usr/bin/env bash
# p1-56 Civics Interactive proof renderer.
#
# Runs ON apricot. Drives flatpak Godot under a weston-headless Wayland host
# pointed at `res://engine/scenes/tests/proof_civics_interactive.tscn`. The
# scene renders the 4-panel godot-ui surface (drag-to-employ, harvest dropdown,
# GP spawn modal, throne-room layer slots) and self-captures to
# `user://screenshots/proof_civics_interactive_<ts>.png`.
#
# Env:
#   SCRATCH_DIR      worktree path containing src/game (required)
#   LOG_FILE         log destination (default /tmp/p1-56-civics-proof.log)
#   TIMEOUT_SEC      Godot timeout in seconds (default 90)

set -uo pipefail

SCRATCH_DIR="${SCRATCH_DIR:?SCRATCH_DIR is required}"
LOG_FILE="${LOG_FILE:-/tmp/p1-56-civics-proof.log}"
TIMEOUT_SEC="${TIMEOUT_SEC:-90}"

GODOT_USERDATA="$HOME/.var/app/org.godotengine.Godot/data/godot/app_userdata/Magic Civilization"
SHOT_DIR="$GODOT_USERDATA/screenshots"

echo "=== p1-56 Civics Interactive proof ==="
echo "SCRATCH_DIR: $SCRATCH_DIR"
echo "LOG: $LOG_FILE"
echo "Sandbox screenshot dir: $SHOT_DIR"

mkdir -p "$SHOT_DIR"
rm -f "$SHOT_DIR"/proof_civics_interactive_*.png 2>/dev/null || true

if ! command -v weston >/dev/null 2>&1; then
    echo "ERROR: weston not installed" >&2
    exit 2
fi

WESTON_SOCKET="p1-56-civics-$$"
WESTON_LOG="/tmp/p1-56-civics-weston.log"
echo "Starting weston (headless, socket=$WESTON_SOCKET)..."
weston --backend=headless --no-config --socket="$WESTON_SOCKET" \
    --width=1280 --height=800 \
    >"$WESTON_LOG" 2>&1 &
WESTON_PID=$!
sleep 1.5
if ! kill -0 "$WESTON_PID" 2>/dev/null; then
    echo "ERROR: weston failed to launch — see $WESTON_LOG" >&2
    tail -20 "$WESTON_LOG" >&2
    exit 3
fi
trap 'kill $WESTON_PID 2>/dev/null; wait $WESTON_PID 2>/dev/null' EXIT

XDG_RUNTIME_DIR="${XDG_RUNTIME_DIR:-/run/user/$(id -u)}" \
timeout "$TIMEOUT_SEC" flatpak run --user \
    --filesystem=home \
    --socket=wayland \
    --unset-env=DISPLAY \
    --env=WAYLAND_DISPLAY="$WESTON_SOCKET" \
    --filesystem=xdg-run/${WESTON_SOCKET} \
    org.godotengine.Godot \
    --path "$SCRATCH_DIR/src/game" \
    --display-driver wayland \
    --rendering-driver opengl3 \
    --rendering-method gl_compatibility \
    res://engine/scenes/tests/proof_civics_interactive.tscn \
    >"$LOG_FILE" 2>&1
RC=$?

echo "--- Godot exit rc=$RC ---"
echo "--- Tail of log ---"
tail -40 "$LOG_FILE"
echo "-------------------"

SHOTS=( "$SHOT_DIR"/proof_civics_interactive_*.png )
if [ ! -f "${SHOTS[0]}" ]; then
    echo "ERROR: no proof_civics_interactive_*.png produced under $SHOT_DIR" >&2
    exit 1
fi

echo "Captured ${#SHOTS[@]} shot(s):"
ls -la "$SHOT_DIR"/proof_civics_interactive_*.png

echo "=== Done ==="
exit 0