#!/bin/bash
# ===========================================
# Gitea Git LFS Setup Script for dalidou
# Server: 192.168.86.50
# ===========================================

set -e

echo "=== Gitea Git LFS Setup for dalidou ==="
echo ""

# -----------------------------------------
# Step 1: Find Gitea container and config
# -----------------------------------------
echo "[1/5] Finding Gitea container..."

GITEA_CONTAINER=$(docker ps --format '{{.Names}}' | grep -i gitea | head -1)

if [ -z "$GITEA_CONTAINER" ]; then
    echo "ERROR: Gitea container not found!"
    echo "Make sure Gitea is running: docker ps"
    exit 1
fi

echo "Found container: $GITEA_CONTAINER"

# -----------------------------------------
# Step 2: Find app.ini location
# -----------------------------------------
echo ""
echo "[2/5] Locating app.ini..."

# Try common locations
APP_INI_PATHS=(
    "/data/gitea/conf/app.ini"
    "/etc/gitea/app.ini"
    "/app/gitea/conf/app.ini"
)

APP_INI=""
for path in "${APP_INI_PATHS[@]}"; do
    if docker exec "$GITEA_CONTAINER" test -f "$path" 2>/dev/null; then
        APP_INI="$path"
        break
    fi
done

if [ -z "$APP_INI" ]; then
    echo "WARNING: Could not find app.ini automatically."
    echo "Searching inside container..."
    APP_INI=$(docker exec "$GITEA_CONTAINER" find / -name "app.ini" 2>/dev/null | head -1)
fi

if [ -z "$APP_INI" ]; then
    echo "ERROR: app.ini not found!"
    exit 1
fi

echo "Found app.ini at: $APP_INI"

# -----------------------------------------
# Step 3: Backup current config
# -----------------------------------------
echo ""
echo "[3/5] Backing up current configuration..."

BACKUP_NAME="app.ini.backup.$(date +%Y%m%d_%H%M%S)"
docker exec "$GITEA_CONTAINER" cp "$APP_INI" "${APP_INI}.backup"
echo "Backup created: ${APP_INI}.backup"

# -----------------------------------------
# Step 4: Check/Enable LFS settings
# -----------------------------------------
echo ""
echo "[4/5] Checking LFS configuration..."

# Check if LFS is already configured
if docker exec "$GITEA_CONTAINER" grep -q "LFS_START_SERVER" "$APP_INI"; then
    echo "LFS_START_SERVER already exists in config"
    docker exec "$GITEA_CONTAINER" grep "LFS_START_SERVER" "$APP_INI"
else
    echo "LFS not configured. Adding LFS settings..."

    # Create a temporary script to modify the config
    docker exec "$GITEA_CONTAINER" sh -c "
        # Add LFS_START_SERVER to [server] section if not present
        if grep -q '^\[server\]' '$APP_INI'; then
            sed -i '/^\[server\]/a LFS_START_SERVER = true' '$APP_INI'
        fi
    "
    echo "Added LFS_START_SERVER = true to [server] section"
fi

# Check/add [lfs] section
if docker exec "$GITEA_CONTAINER" grep -q "^\[lfs\]" "$APP_INI"; then
    echo "[lfs] section already exists"
    docker exec "$GITEA_CONTAINER" grep -A5 "^\[lfs\]" "$APP_INI"
else
    echo "Adding [lfs] section..."
    docker exec "$GITEA_CONTAINER" sh -c "
        echo '' >> '$APP_INI'
        echo '[lfs]' >> '$APP_INI'
        echo 'PATH = /data/lfs' >> '$APP_INI'
    "
    echo "Added [lfs] section with PATH = /data/lfs"
fi

# -----------------------------------------
# Step 5: Create LFS directory and set permissions
# -----------------------------------------
echo ""
echo "[5/5] Setting up LFS directory..."

docker exec "$GITEA_CONTAINER" sh -c "
    mkdir -p /data/lfs
    chown -R git:git /data/lfs 2>/dev/null || chown -R 1000:1000 /data/lfs
    chmod 755 /data/lfs
"
echo "LFS directory created at /data/lfs"

# -----------------------------------------
# Show final configuration
# -----------------------------------------
echo ""
echo "=== Current LFS Configuration ==="
docker exec "$GITEA_CONTAINER" grep -E "(LFS_START_SERVER|^\[lfs\]|^PATH)" "$APP_INI" || true

echo ""
echo "=== Next Steps ==="
echo "1. Restart Gitea to apply changes:"
echo "   docker restart $GITEA_CONTAINER"
echo ""
echo "2. Verify LFS is enabled:"
echo "   docker logs $GITEA_CONTAINER 2>&1 | grep -i lfs"
echo ""
echo "3. Test from Windows client (see windows-setup.ps1)"
echo ""
echo "Done!"