#!/usr/bin/env bash
set -euo pipefail

APP=imajviewer
BUNDLE_DIR="$(cd "$(dirname "$0")/build/linux/x64/release/bundle" && pwd)"
INSTALL_DIR="${HOME}/.local/lib/${APP}"
BIN_LINK="${HOME}/.local/bin/${APP}"
DESKTOP_FILE="${HOME}/.local/share/applications/${APP}.desktop"
ICON_DIR="${HOME}/.local/share/icons/hicolor/64x64/apps"
ICON_FILE="${ICON_DIR}/${APP}.png"

# ── Renkler ──
RED='\033[0;31m'; GREEN='\033[0;32m'; CYAN='\033[0;36m'; NC='\033[0m'
info()  { echo -e "${CYAN}•${NC} $1"; }
ok()    { echo -e "${GREEN}✓${NC} $1"; }
err()   { echo -e "${RED}✗${NC} $1"; exit 1; }

# ── Ön koşul kontrol ──
command -v xdg-mime   >/dev/null 2>&1 || err "xdg-mime bulunamadı (xdg-utils paketi gerekli)"
command -v xdg-desktop-menu >/dev/null 2>&1 || err "xdg-desktop-menu bulunamadı (xdg-utils paketi gerekli)"

if [ ! -f "$BUNDLE_DIR/${APP}" ]; then
  info "Binary bulunamadı, Flutter build başlatılıyor…"
  cd "$(dirname "$0")"
  flutter build linux 2>&1 | tail -1
  BUNDLE_DIR="$(cd "$(dirname "$0")/build/linux/x64/release/bundle" && pwd)"
  [ -f "$BUNDLE_DIR/${APP}" ] || err "Build başarısız!"
fi

# ── Kurulum dizinleri ──
mkdir -p "$INSTALL_DIR" "$(dirname "$BIN_LINK")" "$(dirname "$DESKTOP_FILE")" "$ICON_DIR"

# ── Binary + kütüphaneler ──
info "Binary ve kütüphaneler kopyalanıyor…"
cp -r "$BUNDLE_DIR"/* "$INSTALL_DIR/"
chmod +x "$INSTALL_DIR/${APP}"

# ── Symlink ──
ln -sf "$INSTALL_DIR/${APP}" "$BIN_LINK"
ok "Symlink: $BIN_LINK → $INSTALL_DIR/${APP}"

# ── İkon (64×64 PNG) ──
if [ ! -f "$ICON_FILE" ]; then
  info "İkon oluşturuluyor…"
  python3 -c "
import struct, zlib, sys
w=h=64; r=g=b=0xff
raw=b''
for y in range(h):
    raw+=b'\\x00'
    for x in range(w):
        d=abs(x-32)+abs(y-32)
        if d<24: r,g,b=100,140,255
        elif d<30: r,g,b=200,220,255
        else: r,g,b=40,45,50
        raw+=bytes([r,g,b,255])
def c(t,d):
    c=t+d
    return struct.pack('>I',len(d))+c+struct.pack('>I',zlib.crc32(c)&0xffffffff)
with open('$ICON_FILE','wb') as f:
    f.write(b'\\x89PNG\\r\\n\\x1a\\n')
    f.write(c(b'IHDR',struct.pack('>IIBBBBB',w,h,8,6,0,0,0)))
    f.write(c(b'IDAT',zlib.compress(raw)))
    f.write(c(b'IEND',b''))
print('  İkon: $ICON_FILE')
"
fi
ok "İkon hazır"

# ── .desktop dosyası ──
info ".desktop dosyası oluşturuluyor…"
cat > "$DESKTOP_FILE" << EOF
[Desktop Entry]
Type=Application
Name=${APP}
Comment=Ultra hafif görüntü izleyici
Exec=${BIN_LINK} %F
Icon=${APP}
Terminal=false
Categories=Graphics;Viewer;RasterGraphics;
MimeType=image/png;image/jpeg;image/webp;image/bmp;image/gif;image/jpg;
StartupNotify=false
EOF
ok "${DESKTOP_FILE}"

# ── MIME default ──
info "Varsayılan görüntü izleyici olarak ayarlanıyor…"
for mime in image/png image/jpeg image/jpg image/webp image/bmp image/gif; do
  xdg-mime default "${APP}.desktop" "$mime" 2>/dev/null || true
done

# ── Masaüstü veritabanını güncelle ──
which update-desktop-database &>/dev/null && update-desktop-database "${HOME}/.local/share/applications/" 2>/dev/null || true
which gtk-update-icon-cache &>/dev/null && gtk-update-icon-cache "${HOME}/.local/share/icons/hicolor/" 2>/dev/null || true

echo ""
echo -e "${GREEN}══════════════════════════════════════════${NC}"
echo -e "${GREEN}  ${APP} kuruldu!${NC}"
echo -e "${GREEN}  Bir PNG/JPG/WebP dosyasına çift tıklayın${NC}"
echo -e "${GREEN}  veya 'xdg-open <dosya>' ile test edin${NC}"
echo -e "${GREEN}══════════════════════════════════════════${NC}"
echo ""
echo "Kaldırmak için: rm -rf ${INSTALL_DIR} ${BIN_LINK} ${DESKTOP_FILE} ${ICON_FILE}"