From 8a254d2958186470243f3df259bb57f0cf9ba126 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?J=C3=B6rn-Michael=20Miehe?= <jmm@yavook.de>
Date: Wed, 1 Nov 2023 01:30:33 +0100
Subject: [PATCH] updated font handling

---
 api/advent22_api/core/config.py        | 12 ------
 api/advent22_api/core/depends.py       | 53 ++++++++++++++++++++++----
 api/advent22_api/core/helpers.py       |  2 +-
 api/advent22_api/routers/admin.py      | 17 ++++++++-
 ui/src/components/admin/ConfigView.vue |  6 +--
 ui/src/lib/api.ts                      |  2 +-
 6 files changed, 67 insertions(+), 25 deletions(-)

diff --git a/api/advent22_api/core/config.py b/api/advent22_api/core/config.py
index 0c873e6..1f6ba42 100644
--- a/api/advent22_api/core/config.py
+++ b/api/advent22_api/core/config.py
@@ -92,14 +92,6 @@ class Puzzle(BaseModel):
     close_after: int = 90
 
 
-class TTFont(BaseModel):
-    # Dateiname (in "/files")
-    file: str
-
-    # Schriftgröße für den Font
-    size: int = 50
-
-
 class Image(BaseModel):
     # Quadrat, Seitenlänge in px
     size: int = 1000
@@ -107,10 +99,6 @@ class Image(BaseModel):
     # Rand in px, wo keine Buchstaben untergebracht werden
     border: int = 60
 
-    # Schriftarten
-    # TODO
-    fonts: list[TTFont]
-
 
 class Config(BaseModel):
     # Login-Daten für Admin-Modus
diff --git a/api/advent22_api/core/depends.py b/api/advent22_api/core/depends.py
index 5d17664..2b3ba0e 100644
--- a/api/advent22_api/core/depends.py
+++ b/api/advent22_api/core/depends.py
@@ -1,4 +1,5 @@
 import re
+from dataclasses import dataclass
 from datetime import date
 from io import BytesIO
 from typing import cast
@@ -11,8 +12,10 @@ from .calendar_config import CalendarConfig, get_calendar_config
 from .config import Config, get_config
 from .dav.webdav import WebDAV
 from .helpers import (
+    RE_TTF,
     EventDates,
     Random,
+    list_fonts,
     list_images_auto,
     list_images_manual,
     load_image,
@@ -109,11 +112,46 @@ async def get_all_image_names(
     return auto_image_names
 
 
+@dataclass(slots=True, frozen=True)
+class TTFont:
+    # Dateiname
+    file_name: str
+
+    # Schriftgröße für den Font
+    size: int = 50
+
+    @property
+    async def font(self) -> "ImageFont._Font":
+        return ImageFont.truetype(
+            font=BytesIO(await WebDAV.read_bytes(self.file_name)),
+            size=100,
+        )
+
+
+async def get_all_ttfonts(
+    font_names: list[str] = Depends(list_fonts),
+) -> list[TTFont]:
+    result = []
+
+    for name in font_names:
+        assert (size_match := RE_TTF.search(name)) is not None
+
+        result.append(
+            TTFont(
+                file_name=name,
+                size=int(size_match.group(1)),
+            )
+        )
+
+    return result
+
+
 async def gen_day_auto_image(
     day: int,
     cfg: Config,
     auto_image_names: dict[int, str],
     day_parts: dict[int, str],
+    ttfonts: list[TTFont],
 ) -> Image.Image:
     """
     Automatisch generiertes Bild erstellen
@@ -125,18 +163,14 @@ async def gen_day_auto_image(
 
     rnd = await Random.get(day)
 
-    font = ImageFont.truetype(
-        font=BytesIO(await WebDAV.read_bytes("files/Lena.ttf")),  # TODO
-        size=100,
-    )
-
     # Buchstaben verstecken
     for letter in day_parts[day]:
         xy_range = range(cfg.image.border, (cfg.image.size - cfg.image.border))
+
         await image.hide_text(
             xy=cast(_XY, tuple(rnd.choices(xy_range, k=2))),
             text=letter,
-            font=font,
+            font=await rnd.choice(ttfonts).font,
         )
 
     return image.img
@@ -148,6 +182,7 @@ async def get_day_image(
     cfg: Config = Depends(get_config),
     auto_image_names: dict[int, str] = Depends(get_all_auto_image_names),
     day_parts: dict[int, str] = Depends(get_all_parts),
+    ttfonts: list[TTFont] = Depends(get_all_ttfonts),
 ) -> Image.Image | None:
     """
     Bild für einen Tag abrufen
@@ -167,5 +202,9 @@ async def get_day_image(
     except RuntimeError:
         # Erstelle automatisch generiertes Bild
         return await gen_day_auto_image(
-            day=day, cfg=cfg, auto_image_names=auto_image_names, day_parts=day_parts
+            day=day,
+            cfg=cfg,
+            auto_image_names=auto_image_names,
+            day_parts=day_parts,
+            ttfonts=ttfonts,
         )
diff --git a/api/advent22_api/core/helpers.py b/api/advent22_api/core/helpers.py
index 4472cdf..7bd3f2f 100644
--- a/api/advent22_api/core/helpers.py
+++ b/api/advent22_api/core/helpers.py
@@ -13,7 +13,7 @@ from .dav.webdav import WebDAV
 
 T = TypeVar("T")
 RE_IMG = re.compile(r"\.(gif|jpe?g|tiff?|png|bmp)$", flags=re.IGNORECASE)
-RE_TTF = re.compile(r"\.(ttf)$", flags=re.IGNORECASE)
+RE_TTF = re.compile(r"_(\d+)\.ttf$", flags=re.IGNORECASE)
 
 
 class Random(random.Random):
diff --git a/api/advent22_api/routers/admin.py b/api/advent22_api/routers/admin.py
index e3cc78b..979f66b 100644
--- a/api/advent22_api/routers/admin.py
+++ b/api/advent22_api/routers/admin.py
@@ -7,7 +7,13 @@ from advent22_api.core.helpers import EventDates
 
 from ..core.calendar_config import CalendarConfig, DoorsSaved, get_calendar_config
 from ..core.config import Config, Image, get_config
-from ..core.depends import get_all_event_dates, get_all_image_names, get_all_parts
+from ..core.depends import (
+    TTFont,
+    get_all_event_dates,
+    get_all_image_names,
+    get_all_parts,
+    get_all_ttfonts,
+)
 from ..core.settings import SETTINGS, RedisSettings
 from ._security import require_admin, user_is_admin
 
@@ -39,6 +45,10 @@ class ConfigModel(BaseModel):
         config_file: str
         background: str
 
+    class __Font(BaseModel):
+        file: str
+        size: int
+
     class __WebDAV(BaseModel):
         url: str
         cache_ttl: int
@@ -48,6 +58,7 @@ class ConfigModel(BaseModel):
     puzzle: __Puzzle
     calendar: __Calendar
     image: Image
+    fonts: list[__Font]
     redis: RedisSettings
     webdav: __WebDAV
 
@@ -58,6 +69,7 @@ async def get_config_model(
     cfg: Config = Depends(get_config),
     cal_cfg: CalendarConfig = Depends(get_calendar_config),
     event_dates: EventDates = Depends(get_all_event_dates),
+    ttfonts: list[TTFont] = Depends(get_all_ttfonts),
 ) -> ConfigModel:
     """
     Kombiniert aus privaten `settings`, `config` und `calendar_config`
@@ -83,6 +95,9 @@ async def get_config_model(
                 "background": cal_cfg.background,
             },
             "image": cfg.image,
+            "fonts": [
+                {"file": ttfont.file_name, "size": ttfont.size} for ttfont in ttfonts
+            ],
             "redis": SETTINGS.redis,
             "webdav": {
                 "url": SETTINGS.webdav.url,
diff --git a/ui/src/components/admin/ConfigView.vue b/ui/src/components/admin/ConfigView.vue
index ba5e44a..d6a00d6 100644
--- a/ui/src/components/admin/ConfigView.vue
+++ b/ui/src/components/admin/ConfigView.vue
@@ -101,10 +101,10 @@
 
               <dt>Schriftarten</dt>
               <dd
-                v-for="(font, index) in config_model.image.fonts"
+                v-for="(font, index) in config_model.fonts"
                 :key="`font-${index}`"
               >
-                {{ font.file }} (Größe {{ font.size }})
+                {{ font.file }} ({{ font.size }} pt)
               </dd>
             </dl>
           </div>
@@ -200,8 +200,8 @@ export default class extends Vue {
     image: {
       size: 500,
       border: 0,
-      fonts: [{ file: "consetetur", size: 0 }],
     },
+    fonts: [{ file: "consetetur", size: 0 }],
     redis: {
       host: "0.0.0.0",
       port: 6379,
diff --git a/ui/src/lib/api.ts b/ui/src/lib/api.ts
index 6f1a3cc..f7e0b5b 100644
--- a/ui/src/lib/api.ts
+++ b/ui/src/lib/api.ts
@@ -19,8 +19,8 @@ export interface ConfigModel {
   image: {
     size: number;
     border: number;
-    fonts: { file: string; size: number }[];
   };
+  fonts: { file: string; size: number }[];
   redis: {
     host: string;
     port: number;