notebookVb

2026-06-04 22:56:27 +02:00
parent f75a0f8906
commit 0f73a6b537
6 changed files with 583 additions and 0 deletions
@@ -0,0 +1,230 @@
+"""
+preview_sample.py — zobrazí náhled fotek podle ID z databáze.
+
+Použití:
+    python preview_sample.py 101 202 303 ...
+    python preview_sample.py --file ids.txt       # jedno ID na řádek
+    python preview_sample.py --file ids.txt --thumb 400
+"""
+
+import argparse
+import base64
+import io
+import sys
+import tempfile
+import webbrowser
+from pathlib import Path
+
+import psycopg2
+from PIL import Image
+
+# ── DB ────────────────────────────────────────────────────────────────────────
+
+DB = dict(host="192.168.1.76", port=5432, user="vladimir.buzalka",
+          password="Vlado7309208104++", database="fotky_buzalkovi")
+
+# ── Cesty ─────────────────────────────────────────────────────────────────────
+
+NAS_LINUX_PREFIX = "/mnt/user/ZalohaVsechObrazku/"
+NAS_WIN_UNC      = r"\\Tower1\ZalohaVsechObrazku\\"
+
+
+def linux_to_win(p: str) -> Path:
+    rel = p.removeprefix(NAS_LINUX_PREFIX).replace("/", "\\")
+    return Path(NAS_WIN_UNC + rel)
+
+
+# ── Načtení dat z DB ──────────────────────────────────────────────────────────
+
+QUERY = """
+    SELECT
+        z.id,
+        z.cesta_zalohy,
+        z.velikost,
+        p.taken_at,
+        p.taken_at_source,
+        p.camera_make,
+        p.camera_model,
+        p.width,
+        p.height,
+        p.megapixels,
+        p.gps_lat,
+        p.gps_lon,
+        COALESCE(
+            (SELECT string_agg(e.error_code, ', ')
+             FROM photo_errors e WHERE e.photo_id = p.id),
+            ''
+        ) AS chyby
+    FROM zaloha_obrazku z
+    JOIN photos p ON p.zaloha_id = z.id
+    WHERE z.id = ANY(%s)
+"""
+
+
+def fetch_rows(ids: list[int]) -> list:
+    conn = psycopg2.connect(**DB)
+    cur = conn.cursor()
+    cur.execute(QUERY, (ids,))
+    rows = cur.fetchall()
+    conn.close()
+    # zachovej původní pořadí ID
+    order = {rid: i for i, rid in enumerate(ids)}
+    return sorted(rows, key=lambda r: order.get(r[0], 9999))
+
+
+# ── Thumbnail ─────────────────────────────────────────────────────────────────
+
+def make_thumb_b64(win_path: Path, size: int) -> str | None:
+    try:
+        img = Image.open(win_path)
+        img.thumbnail((size, size), Image.LANCZOS)
+        if img.mode not in ("RGB", "L"):
+            img = img.convert("RGB")
+        buf = io.BytesIO()
+        img.save(buf, format="JPEG", quality=82)
+        return base64.b64encode(buf.getvalue()).decode()
+    except Exception:
+        return None
+
+
+# ── HTML ──────────────────────────────────────────────────────────────────────
+
+def format_size(n) -> str:
+    if n is None:
+        return "?"
+    for unit in ("B", "kB", "MB", "GB"):
+        if n < 1024:
+            return f"{n:.0f} {unit}"
+        n /= 1024
+    return f"{n:.1f} GB"
+
+
+def render_html(rows: list, ids: list[int], thumb_size: int) -> str:
+    cards = []
+    ok = 0
+
+    for i, row in enumerate(rows, 1):
+        (rid, cesta, velikost, taken_at, taken_src,
+         make_, model, width, height, mp, lat, lon, chyby) = row
+
+        win_path = linux_to_win(cesta)
+        b64 = make_thumb_b64(win_path, thumb_size)
+
+        if b64:
+            ok += 1
+            img_tag = f'<img src="data:image/jpeg;base64,{b64}" alt="foto">'
+            card_cls = "card"
+        else:
+            img_tag = '<div class="no-img">⚠ soubor nedostupný<br><small>zkontroluj přístup na Tower1</small></div>'
+            card_cls = "card broken"
+
+        camera = " ".join(filter(None, [make_, model])) or "<em>neznámá</em>"
+        date_str = taken_at.strftime("%Y-%m-%d %H:%M") if taken_at else "?"
+        res = f"{width}×{height}" if width and height else "?"
+        mp_str = f"{mp:.1f} Mpx" if mp else ""
+        gps_link = (
+            f'<a href="https://maps.google.com/?q={lat},{lon}" target="_blank">📍 {lat:.4f}, {lon:.4f}</a>'
+            if lat and lon else ""
+        )
+        chyby_html = f'<div class="err">{chyby}</div>' if chyby else ""
+        path_short = str(win_path).replace(NAS_WIN_UNC, "…\\")
+
+        cards.append(f"""
+        <div class="{card_cls}">
+            <div class="thumb">{img_tag}</div>
+            <div class="meta">
+                <div class="idx">id={rid} &nbsp;#{i}</div>
+                <div><strong>{date_str}</strong> <span class="src">({taken_src})</span></div>
+                <div>📷 {camera}</div>
+                <div>{res} {mp_str} &nbsp; {format_size(velikost)}</div>
+                {"<div>" + gps_link + "</div>" if gps_link else ""}
+                {chyby_html}
+                <div class="path" title="{win_path}">{path_short}</div>
+            </div>
+        </div>""")
+
+    missing_ids = set(ids) - {r[0] for r in rows}
+    missing_note = ""
+    if missing_ids:
+        missing_note = f'<div class="warn">ID nenalezena v DB: {sorted(missing_ids)}</div>'
+
+    return f"""<!DOCTYPE html>
+<html lang="cs">
+<head>
+<meta charset="utf-8">
+<title>Preview fotek ({len(rows)})</title>
+<style>
+  body {{ font-family: sans-serif; background: #1a1a2e; color: #eee; margin: 0; padding: 16px; }}
+  h1 {{ color: #e0c97f; margin-bottom: 4px; }}
+  .info {{ color: #aaa; margin-bottom: 16px; font-size: .9em; }}
+  .warn {{ color: #f99; margin-bottom: 12px; }}
+  .grid {{ display: flex; flex-wrap: wrap; gap: 16px; }}
+  .card {{ background: #16213e; border-radius: 8px; overflow: hidden;
+            width: {thumb_size + 24}px; box-shadow: 0 2px 8px #0006; }}
+  .card.broken {{ opacity: .55; }}
+  .thumb {{ display:flex; align-items:center; justify-content:center;
+            background:#0f3460; min-height: 120px; }}
+  .thumb img {{ max-width:100%; max-height:{thumb_size}px; display:block; }}
+  .no-img {{ color:#f88; padding:20px; text-align:center; font-size:.85em; }}
+  .meta {{ padding: 8px 12px; font-size: .78em; line-height: 1.75; }}
+  .meta strong {{ font-size: 1em; }}
+  .idx {{ float:right; color:#666; font-size:.75em; }}
+  .src {{ color:#888; }}
+  .err {{ color:#f99; }}
+  .path {{ color:#555; word-break:break-all; margin-top:4px; font-size:.7em; }}
+  a {{ color:#7ec8e3; }}
+</style>
+</head>
+<body>
+<h1>Preview fotek</h1>
+<div class="info">
+  Celkem ID: <strong>{len(ids)}</strong> &nbsp;·&nbsp;
+  Načteno z DB: <strong>{len(rows)}</strong> &nbsp;·&nbsp;
+  Obrázky dostupné: <strong>{ok}/{len(rows)}</strong>
+</div>
+{missing_note}
+<div class="grid">
+{"".join(cards)}
+</div>
+</body>
+</html>"""
+
+
+# ── Main ──────────────────────────────────────────────────────────────────────
+
+def main():
+    parser = argparse.ArgumentParser(description="Preview fotek podle ID z DB")
+    parser.add_argument("ids", nargs="*", type=int, help="ID fotek (zaloha_obrazku.id)")
+    parser.add_argument("--file", "-f", help="Soubor s ID (jedno na řádek)")
+    parser.add_argument("--thumb", "-t", type=int, default=320, help="Velikost thumbnailů v px (default 320)")
+    args = parser.parse_args()
+
+    ids = list(args.ids)
+
+    if args.file:
+        with open(args.file) as fh:
+            for line in fh:
+                line = line.strip()
+                if line and line.isdigit():
+                    ids.append(int(line))
+
+    if not ids:
+        print("Žádná ID. Zadej je jako argumenty nebo přes --file.", file=sys.stderr)
+        sys.exit(1)
+
+    print(f"Načítám {len(ids)} fotek z DB…")
+    rows = fetch_rows(ids)
+    print(f"Generuji thumbnaily (--thumb {args.thumb}px)…")
+    html = render_html(rows, ids, args.thumb)
+
+    tmp = tempfile.NamedTemporaryFile(
+        suffix=".html", delete=False, mode="w", encoding="utf-8"
+    )
+    tmp.write(html)
+    tmp.close()
+    print(f"Otevírám: {tmp.name}")
+    webbrowser.open(f"file:///{tmp.name}")
+
+
+if __name__ == "__main__":
+    main()