added json logger

.gitignore

@@ -167,3 +167,4 @@ test/**/index.html
 test/**/.sizelist.json
 test/manifest.json
 themes/previews
+logs

.version

@@ -1 +1 @@
-2.2.7
+2.3.0

StaticGalleryBuilder.code-workspace

@@ -101,7 +101,7 @@
             "editor.defaultFormatter": "ms-python.black-formatter",
         },
         "black-formatter.args": [
-            "-l 140",
+            "-l 260",
         ],
         "black-formatter.interpreter": [
             "/usr/bin/python3",

builder.py

@@ -11,10 +11,12 @@ from typing import Dict, List, Tuple
 from tqdm.auto import tqdm
 from PIL import Image, ImageOps
 
+from modules.logger import logger
 from modules.argumentparser import parse_arguments, Args
 from modules.svg_handling import icons, webmanifest, extract_colorscheme
 from modules.generate_html import list_folder, EXCLUDES
 
+
 # fmt: off
 # Constants
 if __package__ is None:
@@ -32,6 +34,7 @@ RAW_EXTENSIONS = [
 ]
 IMG_EXTENSIONS = [".jpg", ".jpeg", ".png"]
 NOT_LIST = ["*/Galleries/*", "Archives"]
+LOG_FILE = os.path.join(SCRIPTDIR, "log.json")
 # fmt: on
 
 pbardict: Dict[str, tqdm] = {}
@@ -77,10 +80,13 @@ def copy_static_files(_args: Args) -> None:
     static_dir = os.path.join(_args.root_directory, ".static")
     if os.path.exists(static_dir):
         print("Removing existing .static folder...")
+        logger.info("removing existing .static folder")
         shutil.rmtree(static_dir)
 
     print("Copying static files...")
+    logger.info("copying static files")
     shutil.copytree(STATIC_FILES_DIR, static_dir, dirs_exist_ok=True)
+    logger.info("reading theme file", extra={"theme": _args.theme_path})
     with open(_args.theme_path, "r", encoding="utf-8") as f:
         theme = f.read()
     split = theme.split(".foldericon {")
@@ -92,20 +98,26 @@ def copy_static_files(_args: Args) -> None:
     for match in re.finditer(r"content: (.*);", foldericon):
         foldericon = match[1]
         foldericon = foldericon.replace('"', "")
+        logger.info("found foldericon", extra={"foldericon": foldericon})
         break
     if "url" in foldericon:
         shutil.copyfile(_args.theme_path, os.path.join(static_dir, "theme.css"))
+        logger.info("foldericon in theme file, using it")
         return
     with open(os.path.join(SCRIPTDIR, foldericon), "r", encoding="utf-8") as f:
+        logger.info("Reading foldericon svg")
         svg = f.read()
     if "svg.j2" in foldericon:
+        logger.info("foldericon in theme file is a jinja2 template")
         colorscheme = extract_colorscheme(_args.theme_path)
         svg = svg.replace("{{ color1 }}", colorscheme["color1"])
         svg = svg.replace("{{ color2 }}", colorscheme["color2"])
         svg = svg.replace("{{ color3 }}", colorscheme["color3"])
         svg = svg.replace("{{ color4 }}", colorscheme["color4"])
+        logger.info("replaced colors in svg")
     svg = urllib.parse.quote(svg)
     with open(os.path.join(static_dir, "theme.css"), "x", encoding="utf-8") as f:
+        logger.info("writing theme file")
         f.write(themehead + '\n.foldericon {\n  content: url("data:image/svg+xml,' + svg + '");\n}\n' + themetail)
 
 
@@ -119,6 +131,7 @@ def generate_thumbnail(arguments: Tuple[str, str, str]) -> None:
         A tuple containing the folder, item, root directory, and regenerate thumbnails flag.
     """
     folder, item, root_directory = arguments
+    image = os.path.join(folder, item)
     path = os.path.join(root_directory, ".thumbnails", folder.removeprefix(root_directory), item) + ".jpg"
     oldpath = os.path.join(root_directory, ".thumbnails", folder.removeprefix(root_directory), os.path.splitext(item)[0]) + ".jpg"
     if os.path.exists(oldpath):
@@ -127,14 +140,19 @@ def generate_thumbnail(arguments: Tuple[str, str, str]) -> None:
         except FileNotFoundError:
             pass
     if not os.path.exists(path):
+        logger.info("generating thumbnail for %s", item, extra={"path": image})
         try:
-            with Image.open(os.path.join(folder, item)) as imgfile:
+            with Image.open(image) as imgfile:
                 imgrgb = imgfile.convert("RGB")
                 img = ImageOps.exif_transpose(imgrgb)
                 img.thumbnail((512, 512))
                 img.save(path, "JPEG", quality=75, optimize=True, mode="RGB")
         except OSError:
-            print(f"Failed to generate thumbnail for {os.path.join(folder, item)}")
+            logger.error("Failed to generate thumbnail for %s", item, extra={"path": image})
+            print(f"Failed to generate thumbnail for {image}")
+            return
+    else:
+        logger.info("thumbnail already exists for %s", item, extra={"path": image})
 
 
 def get_total_folders(folder: str, _args: Args, _total: int = 0) -> int:
@@ -163,6 +181,7 @@ def get_total_folders(folder: str, _args: Args, _total: int = 0) -> int:
     for item in items:
         if item not in EXCLUDES and os.path.isdir(os.path.join(folder, item)) and not item.startswith("."):
             if item not in _args.exclude_folders and not any(fnmatch.fnmatchcase(os.path.join(folder, item), exclude) for exclude in _args.exclude_folders):
+                logger.debug("Found folder %s in %s", item, folder)
                 _total = get_total_folders(os.path.join(folder, item), _args, _total)
     return _total
 
@@ -179,12 +198,15 @@ def main() -> None:
     lock_file = os.path.join(args.root_directory, ".lock")
     if os.path.exists(lock_file):
         print("Another instance of this program is running.")
+        logger.info("nother instance of this program is running")
         exit()
 
     try:
         Path(lock_file).touch()
         if args.regenerate_thumbnails:
+            logger.warning("regenerate thumbnails flag is set to true, all thumbnails will be regenerated")
             if os.path.exists(os.path.join(args.root_directory, ".thumbnails")):
+                logger.info("removing old thumbnails folder")
                 shutil.rmtree(os.path.join(args.root_directory, ".thumbnails"))
         os.makedirs(os.path.join(args.root_directory, ".thumbnails"), exist_ok=True)
 
@@ -192,17 +214,21 @@ def main() -> None:
         icons(args)
 
         if args.generate_webmanifest:
+            logger.info("generating webmanifest")
             print("Generating webmanifest...")
             webmanifest(args)
 
         if args.non_interactive_mode:
+            logger.info("generating HTML files")
             print("Generating HTML files...")
             thumbnails = list_folder(0, args.root_directory, args.site_title, args, raw, VERSION)
             with Pool(os.cpu_count()) as pool:
+                logger.info("generating thumbnails")
                 print("Generating thumbnails...")
                 pool.map(generate_thumbnail, thumbnails)
         else:
             pbardict["traversingbar"] = tqdm(desc="Traversing filesystem", unit="folders", ascii=True, dynamic_ncols=True)
+            logger.info("getting total number of folders to process")
             total = get_total_folders(args.root_directory, args)
             pbardict["traversingbar"].desc = "Traversing filesystem"
             pbardict["traversingbar"].update(0)
@@ -211,6 +237,7 @@ def main() -> None:
             thumbnails = list_folder(total, args.root_directory, args.site_title, args, raw, VERSION)
 
             with Pool(os.cpu_count()) as pool:
+                logger.info("generating thumbnails")
                 for _ in tqdm(
                     pool.imap_unordered(generate_thumbnail, thumbnails),
                     total=len(thumbnails),

modules/argumentparser.py

@@ -4,6 +4,8 @@ import os
 import argparse
 from rich_argparse import RichHelpFormatter, HelpPreviewAction
 
+from modules.logger import logger
+
 if __package__ is None:
     PACKAGE = ""
 else:
@@ -129,4 +131,5 @@ def parse_arguments(version: str) -> Args:
         use_fancy_folders=parsed_args.use_fancy_folders,
         web_root_url=parsed_args.web_root_url,
     )
+    logger.debug("parsed arguments", extra={"args": _args.to_dict()})
     return _args

modules/css_color.py

@@ -2,6 +2,8 @@ import re
 import colorsys
 from typing import Dict
 
+from modules.logger import logger
+
 
 def extract_colorscheme(theme_path: str) -> Dict[str, str]:
     """
@@ -17,6 +19,7 @@ def extract_colorscheme(theme_path: str) -> Dict[str, str]:
     Dict[str, str]
         Dictionary containing color scheme variables and their hexadecimal values.
     """
+    logger.info("extracting color scheme from theme file", extra={"theme_path": theme_path})
     pattern = r"--(color[1-4]|bcolor1):\s*(#[0-9a-fA-F]+|rgba?\([^)]*\)|hsla?\([^)]*\)|[a-zA-Z]+);"
     colorscheme = {}
 
@@ -30,6 +33,8 @@ def extract_colorscheme(theme_path: str) -> Dict[str, str]:
         color_value = match[1]
         hex_color_value = css_color_to_hex(color_value)
         colorscheme[variable_name] = hex_color_value
+    logger.debug("extracted variable", extra={"variable": variable_name, "value": hex_color_value})
+    logger.info("extracted color scheme", extra={"colorscheme": colorscheme})
 
     return colorscheme
 
@@ -86,10 +91,12 @@ def css_color_to_hex(css_color: str) -> str:
 
     # Helper function to convert RGB tuple to hexadecimal string
     def rgb_to_hex(rgb: tuple[int, int, int]) -> str:
+        logger.debug("converting rgb tuple to hex string", extra={"rgb": rgb})
         return "#{:02x}{:02x}{:02x}".format(*rgb)
 
     # Helper function to convert HSL tuple to RGB tuple
     def hsl_to_rgb(hsl: tuple[int, float, float]) -> tuple[int, int, int]:
+        logger.debug("converting hsl tuple to rgb tuple", extra={"hsl": hsl})
         return tuple(round(c * 255) for c in colorsys.hls_to_rgb(hsl[0] / 360, hsl[1] / 100, hsl[2] / 100))
 
     # Regular expression pattern to match CSS colors
@@ -103,6 +110,7 @@ def css_color_to_hex(css_color: str) -> str:
     match = color_pattern.match(css_color.strip())
 
     if not match:
+        logger.error("invalid CSS color format", extra={"css_color": css_color})
         raise ValueError("Invalid CSS color format")
 
     groups = match.groupdict()
@@ -119,8 +127,10 @@ def css_color_to_hex(css_color: str) -> str:
         b = int(groups["b"].rstrip("%")) * 255 // 100 if "%" in groups["b"] else int(groups["b"])
         a = float(groups["a"]) if groups["a"] else 1.0
         if a < 1.0:
+            logger.debug("converting rgba color to hex", extra={"color": css_color, "r": r, "g": g, "b": b, "a": a})
             return rgb_to_hex((r, g, b)) + "{:02x}".format(round(a * 255))
         else:
+            logger.debug("converting rgb color to hex", extra={"color": css_color, "r": r, "g": g, "b": b})
             return rgb_to_hex((r, g, b))
 
     elif groups["hsl"]:
@@ -130,8 +140,10 @@ def css_color_to_hex(css_color: str) -> str:
         a = float(groups["a"]) if groups["a"] else 1.0
         rgb_color = hsl_to_rgb((h, s, l))
         if a < 1.0:
+            logger.debug("converting hsla color to hex", extra={"color": css_color, "hsl": (h, s, l), "a": a})
             return rgb_to_hex(rgb_color) + "{:02x}".format(round(a * 255))
         else:
+            logger.debug("converting hsl color to hex", extra={"color": css_color, "hsl": (h, s, l)})
             return rgb_to_hex(rgb_color)
 
     # fmt: off
@@ -182,7 +194,9 @@ def css_color_to_hex(css_color: str) -> str:
             'turquoise': '#40e0d0', 'violet': '#ee82ee', 'wheat': '#f5deb3', 'white': '#ffffff',
             'whitesmoke': '#f5f5f5', 'yellow': '#ffff00', 'yellowgreen': '#9acd32'
         }
+        logger.debug("parsing css color string", extra={"css_color": css_color})
         return named_colors[groups['name'].lower()]
     # fmt: on
 
+    logger.error("invalid CSS color format", extra={"css_color": css_color})
     raise ValueError("Invalid CSS color format")

modules/generate_html.py

@@ -6,9 +6,10 @@ from typing import Any, Dict, List, Tuple
 
 import numpy as np
 from tqdm.auto import tqdm
-from PIL import Image, ExifTags
+from PIL import Image, ExifTags, TiffImagePlugin
 from jinja2 import Environment, FileSystemLoader
 
+from modules.logger import logger
 import modules.cclicense as cclicense
 from modules.argumentparser import Args
 
@@ -45,17 +46,20 @@ def initialize_sizelist(folder: str) -> Dict[str, Dict[str, int]]:
     sizelist = {}
     sizelist_path = os.path.join(folder, ".sizelist.json")
     if not os.path.exists(sizelist_path):
+        logger.info("creating new size list file", extra={"file": sizelist_path})
         with open(sizelist_path, "x", encoding="utf-8") as sizelistfile:
             sizelistfile.write("{}")
     with open(sizelist_path, "r+", encoding="utf-8") as sizelistfile:
+        logger.info("reading size list file", extra={"file": sizelist_path})
         try:
             sizelist = json.loads(sizelistfile.read())
         except json.decoder.JSONDecodeError:
+            logger.warning("invalid JSON in size list file", extra={"file": sizelist_path})
             sizelist = {}
     return sizelist
 
 
-def update_sizelist(sizelist: Dict[str, Dict[str, int]], folder: str) -> None:
+def update_sizelist(sizelist: Dict[str, Dict[str, Any]], folder: str) -> None:
     """
     Updates the size list JSON file.
 
@@ -64,11 +68,13 @@ def update_sizelist(sizelist: Dict[str, Dict[str, int]], folder: str) -> None:
         folder (str): The folder in which the size list file is located.
     """
     sizelist_path = os.path.join(folder, ".sizelist.json")
-    if sizelist != {}:
+    if sizelist:
         with open(sizelist_path, "w", encoding="utf-8") as sizelistfile:
+            logger.info("writing size list file", extra={"file": sizelist_path})
             sizelistfile.write(json.dumps(sizelist, indent=4))
     else:
         if os.path.exists(sizelist_path):
+            logger.info("deleting empty size list file", extra={"file": sizelist_path})
             os.remove(sizelist_path)
 
 
@@ -84,11 +90,35 @@ def get_image_info(item: str, folder: str) -> Dict[str, Any]:
         Dict[str, Any]: A dictionary containing image width, height, and EXIF data.
     """
     with Image.open(os.path.join(folder, item)) as img:
+        logger.info("extracting image information", extra={"file": item})
         exif = img.getexif()
         width, height = img.size
-    exifdata = {ExifTags.TAGS.get(key, key): val for key, val in exif.items()}
+    if exif:
+        ifd = exif.get_ifd(ExifTags.IFD.Exif)
+        exifdatas = dict(exif.items()) | ifd
+        exifdata = {}
+        for tag_id in exifdatas:
+            tag = ExifTags.TAGS.get(tag_id, tag_id)
+            content = exifdatas.get(tag_id)
+            if isinstance(content, bytes):
+                content = content.hex(" ")
+            if isinstance(content, TiffImagePlugin.IFDRational):
+                content = content.limit_rational(1000000)
+            if isinstance(content, tuple):
+                newtuple = ()
+                for i in content:
+                    if isinstance(i, TiffImagePlugin.IFDRational):
+                        newtuple = newtuple + (i.limit_rational(1000000),)
+                if newtuple:
+                    content = newtuple
+            exifdata[tag] = content
         if "Orientation" in exifdata and exifdata["Orientation"] in [6, 8]:
             width, height = height, width
+        for key in ["PrintImageMatching", "UserComment", "MakerNote"]:
+            if key in exifdata:
+                del exifdata[key]
+        return {"width": width, "height": height, "exifdata": exifdata}
+    else:
         return {"width": width, "height": height}
 
 
@@ -144,6 +174,10 @@ def generate_html(folder: str, title: str, _args: Args, raw: List[str], version:
         _args (Args): Parsed command line arguments.
         raw (List[str]): Raw image file names.
     """
+    if _args.regenerate_thumbnails:
+        if os.path.exists(os.path.join(folder, ".sizelist.json")):
+            logger.info("removing .sizelist.json", extra={"folder": folder})
+            os.remove(os.path.join(folder, ".sizelist.json"))
     sizelist = initialize_sizelist(folder)
     items = sorted(os.listdir(folder))
 
@@ -182,6 +216,7 @@ def generate_html(folder: str, title: str, _args: Args, raw: List[str], version:
         create_html_file(folder, title, foldername, images, subfolders, _args, version)
     else:
         if os.path.exists(os.path.join(folder, "index.html")):
+            logger.info("removing existing index.html", extra={"folder": folder})
             os.remove(os.path.join(folder, "index.html"))
 
     if not _args.non_interactive_mode:
@@ -198,6 +233,7 @@ def create_thumbnail_folder(foldername: str, root_directory: str) -> None:
     """
     thumbnails_path = os.path.join(root_directory, ".thumbnails", foldername)
     if not os.path.exists(thumbnails_path):
+        logger.info("creating thumbnail folder", extra={"path": thumbnails_path})
         os.mkdir(thumbnails_path)
 
 
@@ -229,6 +265,7 @@ def process_info_file(folder: str, item: str) -> None:
         item (str): The info file name.
     """
     with open(os.path.join(folder, item), encoding="utf-8") as f:
+        logger.info("processing info file", extra={"path": os.path.join(folder, item)})
         info[urllib.parse.quote(folder)] = f.read()
 
 
@@ -258,6 +295,8 @@ def create_html_file(folder: str, title: str, foldername: str, images: List[Dict
         subfolders (List[Dict[str, str]]): A list of subfolders to include in the HTML.
         _args (Args): Parsed command line arguments.
     """
+    html_file = os.path.join(folder, "index.html")
+    logger.info("generating html file with jinja2", extra={"path": html_file})
     image_chunks = np.array_split(images, 8) if images else []
     header = os.path.basename(folder) or title
     parent = None if not foldername else f"{_args.web_root_url}{urllib.parse.quote(foldername.removesuffix(folder.split('/')[-1] + '/'))}"
@@ -297,7 +336,8 @@ def create_html_file(folder: str, title: str, foldername: str, images: List[Dict
         version=version,
     )
 
-    with open(os.path.join(folder, "index.html"), "w", encoding="utf-8") as f:
+    with open(html_file, "w", encoding="utf-8") as f:
+        logger.info("writing html file", extra={"path": html_file})
         f.write(content)
 
 

modules/logger.py

@@ -0,0 +1,96 @@
+"""
+loggerdabn.py
+
+This module provides functionality for setting up a centralized logging system using the
+`logging` library and the `python-json-logger` to output logs in JSON format. It handles
+log rotation by renaming old log files and saving them based on the first timestamp entry.
+
+Functions:
+- log_format(keys): Generates the logging format string based on the list of keys.
+- rotate_log_file(): Handles renaming the existing log file to a timestamp-based name.
+- setup_logger(): Configures the logging system, applies a JSON format, and returns a logger instance.
+"""
+
+import logging
+import os
+import json
+from datetime import datetime
+from pythonjsonlogger import jsonlogger
+
+# Constants for file paths and exclusions
+if __package__ is None:
+    PACKAGE = ""
+else:
+    PACKAGE = __package__
+SCRIPTDIR = os.path.abspath(os.path.dirname(__file__).removesuffix(PACKAGE))
+LOG_DIR = os.path.join(SCRIPTDIR, "logs")
+LATEST_LOG_FILE = os.path.join(LOG_DIR, "latest.jsonl")
+
+if not os.path.exists(LOG_DIR):
+    os.makedirs(LOG_DIR)
+
+
+def log_format(keys):
+    """
+    Generates a list of format strings based on the given keys.
+
+    Args:
+        keys (list): A list of string keys that represent the log attributes (e.g., 'asctime', 'levelname').
+
+    Returns:
+        list: A list of formatted strings for each key, in the format "%(key)s".
+    """
+    return [f"%({i})s" for i in keys]
+
+
+def rotate_log_file():
+    """
+    Renames the existing 'latest.jsonl' file to a timestamped file based on the first log entry's asctime.
+
+    If 'latest.jsonl' exists, it's renamed to the first timestamp found in the log entry.
+    """
+    if os.path.exists(LATEST_LOG_FILE):
+        with open(LATEST_LOG_FILE, "r", encoding="utf-8") as f:
+            first_line = f.readline()
+            try:
+                first_log = json.loads(first_line)
+                first_timestamp = first_log.get("asctime")
+                first_timestamp = first_timestamp.split(",")[0]
+            except (json.JSONDecodeError, KeyError):
+                first_timestamp = datetime.now().strftime("%Y-%m-%d_%H-%M-%S")
+
+        safe_timestamp = first_timestamp.replace(":", "-").replace(" ", "_")
+        old_log_filename = os.path.join(LOG_DIR, f"{safe_timestamp}.jsonl")
+
+        os.rename(LATEST_LOG_FILE, old_log_filename)
+
+
+def setup_logger():
+    """
+    Configures the logging system with a custom format and outputs logs in JSON format.
+
+    The logger will write to the 'logs/latest.jsonl' file, and it will include
+    multiple attributes such as the time of logging, the filename, function name, log level, etc.
+    If 'latest.jsonl' already exists, it will be renamed to a timestamped file before creating a new one.
+
+    Returns:
+        logging.Logger: A configured logger instance that can be used to log messages.
+    """
+    rotate_log_file()
+    app_logger = logging.getLogger()
+
+    supported_keys = ["asctime", "created", "filename", "funcName", "levelname", "levelno", "lineno", "module", "msecs", "message", "name", "pathname", "process", "processName", "relativeCreated", "thread", "threadName", "taskName"]
+
+    custom_format = " ".join(log_format(supported_keys))
+    formatter = jsonlogger.JsonFormatter(custom_format)
+
+    log_handler = logging.FileHandler(LATEST_LOG_FILE)
+    log_handler.setFormatter(formatter)
+
+    app_logger.addHandler(log_handler)
+    app_logger.setLevel(logging.INFO)
+
+    return app_logger
+
+
+logger = setup_logger()

modules/svg_handling.py

@@ -13,6 +13,7 @@ try:
 except ImportError:
     SVGSUPPORT = False
 
+from modules.logger import logger
 from modules.argumentparser import Args
 from modules.css_color import extract_theme_color, extract_colorscheme
 
@@ -55,6 +56,7 @@ def render_svg_icon(colorscheme: Dict[str, str], iconspath: str) -> str:
     svg = env.get_template("icon.svg.j2")
     content = svg.render(colorscheme=colorscheme)
     with open(os.path.join(iconspath, "icon.svg"), "w+", encoding="utf-8") as f:
+        logger.info("writing svg icon", extra={"iconspath": iconspath})
         f.write(content)
     return content
 
@@ -73,6 +75,7 @@ def save_png_icon(content: str, iconspath: str) -> None:
     tmpimg = BytesIO()
     cairosvg.svg2png(bytestring=content, write_to=tmpimg)
     with Image.open(tmpimg) as iconfile:
+        logger.info("saving png icon", extra={"iconspath": iconspath})
         iconfile.save(os.path.join(iconspath, "icon.png"))
 
 
@@ -87,9 +90,11 @@ def generate_favicon(iconspath: str, root_directory: str) -> None:
     root_directory : str
         Root directory of the project where the favicon will be saved.
     """
-    command = f'magick {os.path.join(iconspath, "icon.png")} -define icon:auto-resize=16,32,48,64,72,96,144,192 {os.path.join(root_directory, ".static", "favicon.ico")}'
+    favicon = os.path.join(root_directory, ".static", "favicon.ico")
+    logger.info("generating favicon with imagemagick", extra={"iconspath": iconspath, "favicon": favicon})
+    command = f'magick {os.path.join(iconspath, "icon.png")} -define icon:auto-resize=16,32,48,64,72,96,144,192 {favicon}'
     if not shutil.which("magick"):
-        command = f'convert {os.path.join(iconspath, "icon.png")} -define icon:auto-resize=16,32,48,64,72,96,144,192 {os.path.join(root_directory, ".static", "favicon.ico")}'
+        command = f'convert {os.path.join(iconspath, "icon.png")} -define icon:auto-resize=16,32,48,64,72,96,144,192 {favicon}'
     os.system(command)
 
 
@@ -102,12 +107,14 @@ def icons(_args: Args) -> None:
     _args : Args
         Parsed command-line arguments.
     """
-    print("Generating icons...")
     iconspath = os.path.join(_args.root_directory, ".static", "icons")
+    logger.info("generating icons", extra={"iconspath": iconspath})
+    print("Generating icons...")
     colorscheme = extract_colorscheme(_args.theme_path)
     content = render_svg_icon(colorscheme, iconspath)
     if not SVGSUPPORT:
         print("Please install cairosvg to generate favicon from svg icon.")
+        logger.error("svg support not available")
         return
     save_png_icon(content, iconspath)
     generate_favicon(iconspath, _args.root_directory)
@@ -135,6 +142,7 @@ def render_manifest_json(_args: Args, icon_list: List[Icon], colors: Dict[str, s
         theme_color=colors["theme_color"],
     )
     with open(os.path.join(_args.root_directory, ".static", "manifest.json"), "w", encoding="utf-8") as f:
+        logger.info("rendering manifest.json", extra={"path": os.path.join(_args.root_directory, ".static", "manifest.json")})
         f.write(content)
 
 
@@ -156,6 +164,7 @@ def create_icons_from_svg(files: List[str], iconspath: str, _args: Args) -> List
     List[Icon]
         List of icons created from the SVG file.
     """
+    logger.info("creating icons for web application", extra={"iconspath": iconspath})
     svg = [file for file in files if file.endswith(".svg")][0]
     icon_list = [
         {"src": f"{_args.web_root_url}.static/icons/{svg}", "type": "image/svg+xml", "sizes": "512x512", "purpose": "maskable"},
@@ -165,6 +174,7 @@ def create_icons_from_svg(files: List[str], iconspath: str, _args: Args) -> List
         tmpimg = BytesIO()
         sizes = size.split("x")
         iconpath = os.path.join(iconspath, os.path.splitext(svg)[0] + "-" + size + ".png")
+        logger.info("converting svg to png", extra={"iconpath": iconpath, "size": size})
         cairosvg.svg2png(
             url=os.path.join(iconspath, svg),
             write_to=tmpimg,
@@ -173,6 +183,7 @@ def create_icons_from_svg(files: List[str], iconspath: str, _args: Args) -> List
             scale=1,
         )
         with Image.open(tmpimg) as iconfile:
+            logger.info("saving png file", extra={"iconpath": iconpath})
             iconfile.save(iconpath, format="PNG")
         icon_list.append(
             {
@@ -215,6 +226,7 @@ def create_icons_from_png(iconspath: str, web_root_url: str) -> List[Icon]:
             continue
         with Image.open(os.path.join(iconspath, icon)) as iconfile:
             iconsize = f"{iconfile.size[0]}x{iconfile.size[1]}"
+            logger.info("using icon", extra={"icon": icon, "size": iconsize})
         icon_list.append({"src": f"{web_root_url}.static/icons/{icon}", "sizes": iconsize, "type": "image/png", "purpose": "maskable"})
         icon_list.append({"src": f"{web_root_url}.static/icons/{icon}", "sizes": iconsize, "type": "image/png", "purpose": "any"})
     return icon_list
@@ -231,14 +243,11 @@ def webmanifest(_args: Args) -> None:
     """
     iconspath = os.path.join(_args.root_directory, ".static", "icons")
     files = os.listdir(iconspath)
-    icon_list = (
-        create_icons_from_svg(files, iconspath, _args)
-        if SVGSUPPORT and any(file.endswith(".svg") for file in files)
-        else create_icons_from_png(iconspath, _args.web_root_url)
-    )
+    icon_list = create_icons_from_svg(files, iconspath, _args) if SVGSUPPORT and any(file.endswith(".svg") for file in files) else create_icons_from_png(iconspath, _args.web_root_url)
 
     if not icon_list:
         print("No icons found in the static/icons folder!")
+        logger.error("no icons found in the static/icons folder", extra={"iconspath": iconspath})
         return
 
     colorscheme = extract_colorscheme(os.path.join(_args.root_directory, ".static", "theme.css"))

requirements.txt

@@ -3,6 +3,7 @@ Jinja2==3.1.4
 numpy==2.0.0
 pillow==10.4.0
 pyinstaller==6.9.0
+python-json-logger==2.0.7
 rich-argparse==1.5.2
 setuptools==70.3.0
 tqdm==4.66.4