From bcac59ceb1883fb5503db24fe2de6b04e29cbe7c Mon Sep 17 00:00:00 2001
From: yyc12345 <yyc12321@outlook.com>
Date: Tue, 1 Sep 2026 22:32:00 +0800
Subject: [PATCH] refactor: refactor assemblicon

---
 tool/src/aurora_iconset_builder/__init__.py   |  32 ++--
 .../aurora_iconset_builder/assemblicon/cli.py | 108 +++++++++++++
 .../assemblicon/highlevel/__init__.py         |   0
 .../assemblicon/highlevel/context.py          | 111 +++++++++++++
 .../{context.py => highlevel/environment.py}  | 151 ++++++++----------
 .../assemblicon/highlevel/utils.py            |  11 ++
 .../assemblicon/logger.py                     |  20 +++
 .../assemblicon/lowlevel/__init__.py          |   0
 .../assemblicon/{ => lowlevel}/artio.py       |  18 +--
 .../assemblicon/{ => lowlevel}/artproc.py     |   0
 .../{artrender.py => lowlevel/artrdr.py}      |  25 ++-
 .../assemblicon/lowlevel/utils.py             |   5 +
 .../assemblicon/utils.py                      |  20 ---
 tool/src/aurora_iconset_builder/cli.py        |  42 -----
 14 files changed, 368 insertions(+), 175 deletions(-)
 create mode 100644 tool/src/aurora_iconset_builder/assemblicon/cli.py
 create mode 100644 tool/src/aurora_iconset_builder/assemblicon/highlevel/__init__.py
 create mode 100644 tool/src/aurora_iconset_builder/assemblicon/highlevel/context.py
 rename tool/src/aurora_iconset_builder/assemblicon/{context.py => highlevel/environment.py} (74%)
 create mode 100644 tool/src/aurora_iconset_builder/assemblicon/highlevel/utils.py
 create mode 100644 tool/src/aurora_iconset_builder/assemblicon/logger.py
 create mode 100644 tool/src/aurora_iconset_builder/assemblicon/lowlevel/__init__.py
 rename tool/src/aurora_iconset_builder/assemblicon/{ => lowlevel}/artio.py (56%)
 rename tool/src/aurora_iconset_builder/assemblicon/{ => lowlevel}/artproc.py (100%)
 rename tool/src/aurora_iconset_builder/assemblicon/{artrender.py => lowlevel/artrdr.py} (90%)
 create mode 100644 tool/src/aurora_iconset_builder/assemblicon/lowlevel/utils.py
 delete mode 100644 tool/src/aurora_iconset_builder/assemblicon/utils.py
 delete mode 100644 tool/src/aurora_iconset_builder/cli.py

diff --git a/tool/src/aurora_iconset_builder/__init__.py b/tool/src/aurora_iconset_builder/__init__.py
index ff283f9..a9965d4 100644
--- a/tool/src/aurora_iconset_builder/__init__.py
+++ b/tool/src/aurora_iconset_builder/__init__.py
@@ -1,32 +1,42 @@
 import logging
 from pathlib import Path
-from .assemblicon.context import Prerequisite, Context, AdvancedContext
-from .assemblicon.utils import setup_logging
+from dataclasses import dataclass
+from .assemblicon.cli import ArgParserSetup, create_argparser, parse_standard_opts
+from .assemblicon.highlevel.environment import Prologue, Environment
+from .assemblicon.highlevel.context import Context
 from .std_icons import build_standard_icons
 from .nostd_icons import build_non_standard_icons
-from .cli import parse
+
+
+@dataclass(frozen=True)
+class AuroraPrologue(Prologue):
+    """Aurora icon set builder specific prologue"""
+
+    pass
 
 
 def main() -> None:
-    opts = parse()
-
-    setup_logging()
+    parser_cfg = ArgParserSetup(require_input=False, require_output=False)
+    parser = create_argparser(parser_cfg)
+    ns = parser.parse_args()
+    opts = parse_standard_opts(parser_cfg, ns)
 
     repository_root = Path(__file__).resolve().parent.parent.parent.parent
     iconset_input = repository_root / "src"
     iconset_output = repository_root / "artifact"
-    prereq = Prerequisite(
+    prologue = AuroraPrologue(
         iconset_input, iconset_output, opts.svg_render.to_assemblicon_type()
     )
-    ctx = Context(prereq)
-    advctx = AdvancedContext(ctx)
+    env = Environment(prologue)
+    ctx = Context(env)
 
     try:
-        _build_icons(advctx)
+        register(ctx)
+        ctx.run(opts.selection)
     except BaseException as e:
         logging.fatal("Runtime error: %s", e)
 
 
-def _build_icons(ctx: AdvancedContext) -> None:
+def register(ctx: Context) -> None:
     build_standard_icons(ctx)
     build_non_standard_icons(ctx)
diff --git a/tool/src/aurora_iconset_builder/assemblicon/cli.py b/tool/src/aurora_iconset_builder/assemblicon/cli.py
new file mode 100644
index 0000000..2e6e58a
--- /dev/null
+++ b/tool/src/aurora_iconset_builder/assemblicon/cli.py
@@ -0,0 +1,108 @@
+import enum
+from typing import Optional
+from pathlib import Path
+from argparse import ArgumentParser, Namespace
+from dataclasses import dataclass
+from .lowlevel.artrdr import SvgRenderKind
+
+
+class CliSvgRenderKind(enum.StrEnum):
+    Inkscape = "inkscape"
+    ReSvg = "resvg"
+
+    def to_assemblicon_type(self) -> SvgRenderKind:
+        match self:
+            case CliSvgRenderKind.Inkscape:
+                return SvgRenderKind.Inkscape
+            case CliSvgRenderKind.ReSvg:
+                return SvgRenderKind.ReSvg
+
+
+@dataclass(frozen=True)
+class StdOpts:
+    """Assemblicon standard command line options"""
+
+    input_directory: Optional[Path]
+    """The path to input directory. None if you doesn't request it."""
+    output_directory: Optional[Path]
+    """The path to output directory. None if you doesn't request it."""
+    selection: Optional[list[str]]
+    """The list holding all name of jobs for building."""
+    svg_render: CliSvgRenderKind
+    """The render kind for SVG file."""
+
+
+@dataclass(frozen=True)
+class ArgParserSetup:
+    require_input: bool
+    """Whether add input path option in argument parser."""
+    require_output: bool
+    """Whether add outputput path option in argument parser."""
+
+
+def create_argparser(cfg: ArgParserSetup) -> ArgumentParser:
+    """
+    Create Assemblicon standard argument parser.
+
+    This argument parser are filled properly with the requirement of Assemblicon itself.
+    It can be directly used or modified with extra options.
+
+    :param cfg: The setup of argument parser.
+    :return: The built argument parser.
+    """
+    parser = ArgumentParser(
+        prog="Assemblicon",
+        description="The Programmatic Icon Assembly Workflow.",
+    )
+    if cfg.require_input:
+        parser.add_argument(
+            "-i",
+            "--input",
+            dest="input",
+            action="store",
+            type=Path,
+            required=True,
+            help="The path to input directory.",
+            metavar="DIR",
+        )
+    if cfg.require_output:
+        parser.add_argument(
+            "-o",
+            "--output",
+            dest="output",
+            action="store",
+            type=Path,
+            required=True,
+            help="The path to output directory.",
+            metavar="DIR",
+        )
+    parser.add_argument(
+        "-t",
+        "--select",
+        dest="selection",
+        action="extend",
+        nargs="+",
+        type=str,
+        help="Only build given name represented jobs.",
+        metavar="RENDER",
+    )
+    parser.add_argument(
+        "-s",
+        "--svg-render",
+        dest="svg_render",
+        action="store",
+        type=CliSvgRenderKind,
+        default=CliSvgRenderKind.Inkscape,
+        help="The render used for rendering SVG into PNG.",
+        metavar="RENDER",
+    )
+    return parser
+
+
+def parse_standard_opts(cfg: ArgParserSetup, ns: Namespace) -> StdOpts:
+    return StdOpts(
+        input_directory=ns.input if cfg.require_input else None,
+        output_directory=ns.output if cfg.require_output else None,
+        selection=ns.selection,
+        svg_render=ns.svg_render,
+    )
diff --git a/tool/src/aurora_iconset_builder/assemblicon/highlevel/__init__.py b/tool/src/aurora_iconset_builder/assemblicon/highlevel/__init__.py
new file mode 100644
index 0000000..e69de29
diff --git a/tool/src/aurora_iconset_builder/assemblicon/highlevel/context.py b/tool/src/aurora_iconset_builder/assemblicon/highlevel/context.py
new file mode 100644
index 0000000..a36cc8d
--- /dev/null
+++ b/tool/src/aurora_iconset_builder/assemblicon/highlevel/context.py
@@ -0,0 +1,111 @@
+from collections import deque
+from dataclasses import dataclass
+from typing import Callable, Iterable
+from .environment import Environment
+from ..logger import HIGHLEVEL_LOGGER as LOGGER
+
+
+@dataclass(frozen=True)
+class Job:
+    """The class represents a job."""
+
+    name: str
+    """The name of this job."""
+    dependencies: set[str]
+    """The dependencies of this job. Each item is a job name. Empty for no dependencies."""
+    executor: Callable[[Environment], None]
+    """The executor of this job."""
+
+
+class Context:
+    __jobs: dict[str, Job]
+    """The dict storing all jobs. Key is job name and value is job payload."""
+    __env: Environment
+    """The shared environment passed to every job executor."""
+
+    def __init__(self, env: Environment) -> None:
+        self.__jobs = {}
+        self.__env = env
+
+    def run(self, selected: Iterable[str] | None) -> None:
+        """
+        Execute builder with given selections.
+
+        The selected jobs, together with all their transitive dependencies,
+        are resolved and topologically sorted (Kahn's algorithm), then
+        executed sequentially with the shared environment. The chain is
+        aborted on the first failing executor.
+
+        :param selected: Only build jobs matching these given names.
+            Their dependencies are always built first. None for building
+            all jobs.
+        """
+        # Step 1: resolve the selection closure. Collect the selected jobs
+        # themselves plus all their transitive dependencies into "needed".
+        needed: set[str] = set()
+        if selected is None:
+            needed = set(self.__jobs.keys())
+        else:
+            pending = list(selected)
+            while pending:
+                name = pending.pop()
+                if name in needed:
+                    continue
+                job = self.__jobs.get(name)
+                if job is None:
+                    raise ValueError(f'Unknown job name: "{name}"')
+                needed.add(name)
+                pending.extend(job.dependencies)
+
+        # Step 2: Kahn topological sort over the sub-graph induced by "needed".
+        # "in_degree": key is a job name, value is how many of its (needed)
+        # dependencies are not built yet.
+        # "dependents": key is a job name, value is the list of jobs in
+        # "needed" that directly depend on the key job.
+        in_degree: dict[str, int] = {name: 0 for name in needed}
+        dependents: dict[str, list[str]] = {name: [] for name in needed}
+        for name in needed:
+            for dep in self.__jobs[name].dependencies:
+                dependents[dep].append(name)
+                in_degree[name] += 1
+        queue = deque(
+            name for name in self.__jobs if name in needed and in_degree[name] == 0
+        )
+        order: list[str] = []
+        while queue:
+            name = queue.popleft()
+            order.append(name)
+            for dependent in dependents[name]:
+                in_degree[dependent] -= 1
+                if in_degree[dependent] == 0:
+                    queue.append(dependent)
+        if len(order) != len(needed):
+            cyclic = sorted(needed - set(order))
+            raise ValueError(f"Dependency cycle detected among jobs: {cyclic}")
+
+        # Step 3: execute the build chain in resolved order.
+        for name in order:
+            LOGGER.info('Running job "%s"...', name)
+            self.__jobs[name].executor(self.__env)
+
+    def register(
+        self,
+        name: str,
+        deps: Iterable[str],
+        exec: Callable[[Environment], None],
+    ) -> None:
+        """
+        Register a new job with given name, dependencies and executor.
+
+        :param name: The name of job.
+        :param deps: An iterable whose each item is the name of dependencies of this job.
+        :param exec: The executor of this job.
+        """
+        if name in self.__jobs:
+            raise ValueError(f'Can not register 2 jobs with same name: "{name}"')
+
+        job_deps = set(deps)
+        if name in job_deps:
+            raise ValueError(f'Self-dependency is not allowed in job: "{name}"')
+
+        self.__jobs[name] = Job(name, job_deps, exec)
diff --git a/tool/src/aurora_iconset_builder/assemblicon/context.py b/tool/src/aurora_iconset_builder/assemblicon/highlevel/environment.py
similarity index 74%
rename from tool/src/aurora_iconset_builder/assemblicon/context.py
rename to tool/src/aurora_iconset_builder/assemblicon/highlevel/environment.py
index 5c3d046..4d3eb81 100644
--- a/tool/src/aurora_iconset_builder/assemblicon/context.py
+++ b/tool/src/aurora_iconset_builder/assemblicon/highlevel/environment.py
@@ -1,18 +1,20 @@
-import logging
 import tempfile
 import os
 import enum
-from dataclasses import dataclass
-from pathlib import Path
 from typing import Optional
 from types import TracebackType
-from .utils import Artifact, ArtifactFile, VANILLA_ARTIFACT_HW
-from .artrender import SvgRenderKind, SvgConfig, BlenderConfig
-from . import artio, artrender
+from dataclasses import dataclass
+from pathlib import Path
+from typing import TypeVar, Generic
+from .utils import Artifact, ArtifactFile, VART_HW
+from ..logger import HIGHLEVEL_LOGGER as LOGGER
+from ..lowlevel.artrdr import SvgRenderKind
+from ..lowlevel.artrdr import SvgRenderKind, SvgConfig, BlenderConfig
+from ..lowlevel import artio, artrdr
 
 
 @dataclass(frozen=True)
-class Prerequisite:
+class Prologue:
     input_directory: Path
     output_directory: Path
     svg_render: SvgRenderKind
@@ -20,45 +22,15 @@ class Prerequisite:
     def __post_init__(self) -> None:
         if not self.input_directory.is_dir():
             raise ValueError(
-                f"Given input path {self.input_directory} is not existing directory."
+                f"Given input path {self.input_directory} is not an existing directory."
             )
         if not self.output_directory.is_dir():
             raise ValueError(
-                f"Given output path {self.output_directory} is not existing directory."
+                f"Given output path {self.output_directory} is not an existing directory."
             )
 
 
-class Context:
-    __prerequisite: Prerequisite
-    __temp_dir: tempfile.TemporaryDirectory[str]
-
-    def __init__(self, prerequisite: Prerequisite) -> None:
-        self.__prerequisite = prerequisite
-        self.__temp_dir = tempfile.TemporaryDirectory()
-
-    @property
-    def prerequisite(self) -> Prerequisite:
-        return self.__prerequisite
-
-    def input_artifact(self, *args: str) -> Path:
-        return self.__prerequisite.input_directory / Path(*args)
-
-    def output_artifact(self, *args: str) -> Path:
-        return self.__prerequisite.output_directory / Path(*args)
-
-    def temporary_artifact(self, *args: str) -> Path:
-        return Path(self.__temp_dir.name) / Path(*args)
-
-    def __enter__(self) -> "Context":
-        return self
-
-    def __exit__(
-        self,
-        exc_type: type[BaseException] | None,
-        exc_value: BaseException | None,
-        traceback: TracebackType | None,
-    ) -> None:
-        self.__temp_dir.cleanup()
+P = TypeVar("P", bound=Prologue)
 
 
 class FdContext(enum.StrEnum):
@@ -97,8 +69,8 @@ _TEMP_LIB_STABLE_DIR: str = "stable"
 _ART_WIN: str = "windows"
 _ART_MAC: str = "macos"
 
-_DEFAULT_SVG_CONFIG = artrender.SvgConfig(VANILLA_ARTIFACT_HW, VANILLA_ARTIFACT_HW)
-_DEFAULT_BLD_CONFIG = artrender.BlenderConfig(VANILLA_ARTIFACT_HW, VANILLA_ARTIFACT_HW)
+_DEFAULT_SVG_CONFIG = artrdr.SvgConfig(VART_HW, VART_HW)
+_DEFAULT_BLD_CONFIG = artrdr.BlenderConfig(VART_HW, VART_HW)
 
 # TODO: For easy testing, we only build 32x32 and 48x48.
 # Enable full generation after testing.
@@ -106,38 +78,36 @@ _FD_THUMBNAIL_HWS: tuple[int, ...] = (32, 48)
 # _FD_THUMBNAIL_HWS: tuple[int, ...] = (16, 32, 48, 64, 128, 256)
 
 
-class AdvancedContext:
-    __context: Context
+class Environment(Generic[P]):
+    __prologue: P
+    """The prologue used for environment."""
+    __temp_dir: tempfile.TemporaryDirectory[str]
 
-    def __init__(self, ctx: Context) -> None:
-        self.__context = ctx
+    def __init__(self, prologue: P) -> None:
+        self.__prologue = prologue
 
         # construct basic layout of temporary directory
-        self.__context.temporary_artifact(_TEMP_USER_DIR).mkdir(
+        self.temporary_artifact(_TEMP_USER_DIR).mkdir(parents=True, exist_ok=True)
+        self.temporary_artifact(_TEMP_LIB_DIR, _TEMP_LIB_ALLOC_DIR).mkdir(
             parents=True, exist_ok=True
         )
-        self.__context.temporary_artifact(_TEMP_LIB_DIR, _TEMP_LIB_ALLOC_DIR).mkdir(
-            parents=True, exist_ok=True
-        )
-        self.__context.temporary_artifact(_TEMP_LIB_DIR, _TEMP_LIB_STABLE_DIR).mkdir(
+        self.temporary_artifact(_TEMP_LIB_DIR, _TEMP_LIB_STABLE_DIR).mkdir(
             parents=True, exist_ok=True
         )
         # and output directory
         for hw in _FD_THUMBNAIL_HWS:
             for kind in FdContext:
-                self.__context.output_artifact(f"{hw}x{hw}", str(kind)).mkdir(
+                self.output_artifact(f"{hw}x{hw}", str(kind)).mkdir(
                     parents=True, exist_ok=True
                 )
         for kind in WinCategory:
-            self.__context.output_artifact(_ART_WIN, str(kind)).mkdir(
-                parents=True, exist_ok=True
-            )
+            self.output_artifact(_ART_WIN, str(kind)).mkdir(parents=True, exist_ok=True)
         for kind in MacCategory:
-            self.__context.output_artifact(_ART_MAC, str(kind)).mkdir(
-                parents=True, exist_ok=True
-            )
+            self.output_artifact(_ART_MAC, str(kind)).mkdir(parents=True, exist_ok=True)
 
-    def __enter__(self) -> "AdvancedContext":
+    # region: With Visitor Requirements
+
+    def __enter__(self) -> "Environment":
         return self
 
     def __exit__(
@@ -146,7 +116,9 @@ class AdvancedContext:
         exc_value: BaseException | None,
         traceback: TracebackType | None,
     ) -> None:
-        self.__context.__exit__(exc_type, exc_value, traceback)
+        self.__temp_dir.cleanup()
+
+    # endregion
 
     # region: New Artifact
 
@@ -154,7 +126,7 @@ class AdvancedContext:
         """
         Create new RGBA vanilla size (1024x1024) empty (#ffffff00) artifact.
         """
-        return artio.new_artifact((VANILLA_ARTIFACT_HW, VANILLA_ARTIFACT_HW))
+        return artio.new_artifact((VART_HW, VART_HW))
 
     # endregion
 
@@ -164,14 +136,14 @@ class AdvancedContext:
         """
         Get the path to input artifact.
         """
-        return self.__context.input_artifact(*args)
+        return self.__prologue.input_directory / Path(*args)
 
     def load_input_bitmap_artifact(self, *args: str) -> ArtifactFile:
         """
         Load given input bitmap asset.
         """
         p = self.input_artifact(*args)
-        logging.info("Loading input artifact: %s", p)
+        LOGGER.info("Loading input artifact: %s", p)
         return artio.load_input_artifact(p)
 
     # endregion
@@ -179,10 +151,10 @@ class AdvancedContext:
     # region: Temporary Artifact
 
     def __user_temporary_artifact(self, *args: str) -> Path:
-        return self.__context.temporary_artifact(_TEMP_USER_DIR, *args)
+        return self.temporary_artifact(_TEMP_USER_DIR, *args)
 
     def __lib_temporary_artifact(self, *args: str) -> Path:
-        return self.__context.temporary_artifact(_TEMP_LIB_DIR, *args)
+        return self.temporary_artifact(_TEMP_LIB_DIR, *args)
 
     def temporary_artifact(self, *args: str) -> Path:
         """
@@ -190,11 +162,11 @@ class AdvancedContext:
 
         All existence of sub-directory should be ensured on your own.
         """
-        return self.__user_temporary_artifact(*args)
+        return Path(self.__temp_dir.name) / Path(*args)
 
     def load_temporary_artifact(self, *args: str) -> ArtifactFile:
         p = self.temporary_artifact(*args)
-        logging.info("Loading temporary artifact: %s", p)
+        LOGGER.info("Loading temporary artifact: %s", p)
         return artio.load_artifact(p)
 
     def save_temporary_artifact(self, art: Artifact, *args: str) -> None:
@@ -204,7 +176,7 @@ class AdvancedContext:
         All existence of sub-directory should be ensured on your own.
         """
         p = self.temporary_artifact(*args)
-        logging.info("Saving temporary artifact: %s", p)
+        LOGGER.info("Saving temporary artifact: %s", p)
         artio.save_artifact(art, p)
 
     def __allocate_lib_temporary_artifact(self, suffix: Optional[str] = None) -> Path:
@@ -229,11 +201,11 @@ class AdvancedContext:
         :return: The path to destination storing render result.
         """
         if dst is None:
-            logging.info("Rendering temporary SVG: %s", src)
+            LOGGER.info("Rendering temporary SVG: %s", src)
             dst = self.__allocate_lib_temporary_artifact(".png")
         else:
-            logging.info("Rendering SVG: %s -> %s", src, dst)
-        artrender.render_svg(src, dst, self.__context.prerequisite.svg_render, cfg)
+            LOGGER.info("Rendering SVG: %s -> %s", src, dst)
+        artrdr.render_svg(src, dst, self.__prologue.svg_render, cfg)
         return dst
 
     def render_svg(
@@ -276,11 +248,11 @@ class AdvancedContext:
         """
         temp_script = self.__fetch_const_lib_temporary_artifact("blender.py")
         if dst is None:
-            logging.info("Rendering temporary Blender composition: %s", src)
+            LOGGER.info("Rendering temporary Blender composition: %s", src)
             dst = self.__allocate_lib_temporary_artifact(".png")
         else:
-            logging.info("Rendering Blender composition: %s -> %s", src, dst)
-        artrender.render_blender(src, dst, temp_script, cfg)
+            LOGGER.info("Rendering Blender composition: %s -> %s", src, dst)
+        artrdr.render_blender(src, dst, temp_script, cfg)
         return dst
 
     def render_blender(
@@ -315,10 +287,17 @@ class AdvancedContext:
 
     # endregion
 
+    # region: Output Artifact
+
+    def output_artifact(self, *args: str) -> Path:
+        return self.__prologue.output_directory / Path(*args)
+
+    # endregion
+
     # region: Advanced Saver
 
     def __fd_artifact(self, hw: int, kind: FdContext, name: str) -> Path:
-        return self.__context.output_artifact(f"{hw}x{hw}", str(kind), f"{name}.png")
+        return self.output_artifact(f"{hw}x{hw}", str(kind), f"{name}.png")
 
     def save_fd_artifact(self, art: Artifact, kind: FdContext, name: str) -> None:
         """
@@ -326,12 +305,12 @@ class AdvancedContext:
 
         :param name: The name of saved artifact. The file extension ".png" is not required.
         """
-        logging.info(
+        LOGGER.info(
             'Saving FreeDesktop artifact with kind "%s" and name "%s".', kind, name
         )
 
         for hw, thumbnail in zip(
-            _FD_THUMBNAIL_HWS, artrender.render_thumbnail(art, _FD_THUMBNAIL_HWS)
+            _FD_THUMBNAIL_HWS, artrdr.render_thumbnail(art, _FD_THUMBNAIL_HWS)
         ):
             dst = self.__fd_artifact(hw, kind, name)
             artio.save_artifact(thumbnail, dst)
@@ -339,7 +318,7 @@ class AdvancedContext:
     def dup_fd_artifact(
         self, src_kind: FdContext, src_name: str, dst_kind: FdContext, dst_name: str
     ) -> None:
-        logging.info(
+        LOGGER.info(
             'Duplicating FreeDesktop artifact from kind "%s" name "%s" to kind "%s" name "%s".',
             src_kind,
             src_name,
@@ -353,7 +332,7 @@ class AdvancedContext:
             )
 
     def __win_artifact(self, kind: WinCategory, name: str) -> Path:
-        return self.__context.output_artifact(_ART_WIN, str(kind), f"{name}.ico")
+        return self.output_artifact(_ART_WIN, str(kind), f"{name}.ico")
 
     def save_win_artifact(self, art: Artifact, kind: WinCategory, name: str) -> None:
         """
@@ -361,15 +340,15 @@ class AdvancedContext:
 
         :param name: The name of saved artifact. The file extension ".ico" is not required.
         """
-        logging.info(
+        LOGGER.info(
             'Saving Windows-only artifact with kind "%s" and name "%s".', kind, name
         )
-        artrender.render_ico(art, self.__win_artifact(kind, name))
+        artrdr.render_ico(art, self.__win_artifact(kind, name))
 
     def dup_win_artifact(
         self, src_kind: WinCategory, src_name: str, dst_kind: WinCategory, dst_name: str
     ) -> None:
-        logging.info(
+        LOGGER.info(
             'Duplicating Windows-only artifact from kind "%s" name "%s" to kind "%s" name "%s".',
             src_kind,
             src_name,
@@ -382,7 +361,7 @@ class AdvancedContext:
         )
 
     def __mac_artifact(self, kind: MacCategory, name: str) -> Path:
-        return self.__context.output_artifact(_ART_MAC, str(kind), f"{name}.icns")
+        return self.output_artifact(_ART_MAC, str(kind), f"{name}.icns")
 
     def save_mac_artifact(self, art: Artifact, kind: MacCategory, name: str) -> None:
         """
@@ -390,15 +369,15 @@ class AdvancedContext:
 
         :param name: The name of saved artifact. The file extension ".icns" is not required.
         """
-        logging.info(
+        LOGGER.info(
             'Saving macOS-only artifact with kind "%s" and name "%s".', kind, name
         )
-        artrender.render_icns(art, self.__mac_artifact(kind, name))
+        artrdr.render_icns(art, self.__mac_artifact(kind, name))
 
     def dup_mac_artifact(
         self, src_kind: MacCategory, src_name: str, dst_kind: MacCategory, dst_name: str
     ) -> None:
-        logging.info(
+        LOGGER.info(
             'Duplicating macOS-only artifact from kind "%s" name "%s" to kind "%s" name "%s".',
             src_kind,
             src_name,
diff --git a/tool/src/aurora_iconset_builder/assemblicon/highlevel/utils.py b/tool/src/aurora_iconset_builder/assemblicon/highlevel/utils.py
new file mode 100644
index 0000000..57abbf3
--- /dev/null
+++ b/tool/src/aurora_iconset_builder/assemblicon/highlevel/utils.py
@@ -0,0 +1,11 @@
+from ..lowlevel.utils import Artifact, ArtifactFile
+
+VART_HW: int = 1024
+"""The height or width of Vanilla Artifact."""
+
+
+def check_vanilla_artifact(art: Artifact) -> None:
+    if art.size != (VART_HW, VART_HW):
+        raise ValueError(
+            f"The size of general highlevel used artifact must be {VART_HW}x{VART_HW}, got {art.width}x{art.height} instead"
+        )
diff --git a/tool/src/aurora_iconset_builder/assemblicon/logger.py b/tool/src/aurora_iconset_builder/assemblicon/logger.py
new file mode 100644
index 0000000..bead702
--- /dev/null
+++ b/tool/src/aurora_iconset_builder/assemblicon/logger.py
@@ -0,0 +1,20 @@
+import logging
+
+
+class LoggerFactory:
+    def __init__(self) -> None:
+        # setup log format and level
+        logging.basicConfig(
+            format="[%(levelname)s][%(name)s] %(message)s", level=logging.INFO
+        )
+
+    def get_lowlevel_logger(self) -> logging.Logger:
+        return logging.getLogger("Lowlevel")
+
+    def get_highlevel_logger(self) -> logging.Logger:
+        return logging.getLogger("Highlevel")
+
+
+LOGGER_FACTORY = LoggerFactory()
+LOWLEVEL_LOGGER = LOGGER_FACTORY.get_lowlevel_logger()
+HIGHLEVEL_LOGGER = LOGGER_FACTORY.get_highlevel_logger()
diff --git a/tool/src/aurora_iconset_builder/assemblicon/lowlevel/__init__.py b/tool/src/aurora_iconset_builder/assemblicon/lowlevel/__init__.py
new file mode 100644
index 0000000..e69de29
diff --git a/tool/src/aurora_iconset_builder/assemblicon/artio.py b/tool/src/aurora_iconset_builder/assemblicon/lowlevel/artio.py
similarity index 56%
rename from tool/src/aurora_iconset_builder/assemblicon/artio.py
rename to tool/src/aurora_iconset_builder/assemblicon/lowlevel/artio.py
index efd0ff3..dec1e03 100644
--- a/tool/src/aurora_iconset_builder/assemblicon/artio.py
+++ b/tool/src/aurora_iconset_builder/assemblicon/lowlevel/artio.py
@@ -1,40 +1,38 @@
-import logging
 import shutil
 from pathlib import Path
 import PIL.Image
 from .utils import Artifact, ArtifactFile
+from ..logger import LOWLEVEL_LOGGER as LOGGER
 
 
 def new_artifact(size: tuple[int, int]) -> Artifact:
     """
     Create new RGBA empty (#ffffff00) artifact with given size.
     """
-    return PIL.Image.new(
-        "RGBA", size, "#ffffff00"
-    )
+    return PIL.Image.new("RGBA", size, "#ffffff00")
 
 
 def load_input_artifact(p: Path) -> ArtifactFile:
     """
-    Load input artifact used for building temporary and output artifact.
+    Load bitmap artifact (PNG, JPEG or BMP) which usually is located in input directory.
     """
-    logging.debug("Loading input artifact: %s", p)
+    LOGGER.debug("Loading input artifact: %s", p)
     return PIL.Image.open(p, "r", ["PNG", "JPEG", "BMP"])
 
 
 def load_artifact(p: Path) -> ArtifactFile:
     """
-    Load artifact saved previously as the intermediary.
+    Load bitmap artifact (PNG-only) saved previously as the intermediary.
     """
-    logging.debug("Loading temporary or output artifact: %s", p)
+    LOGGER.debug("Loading temporary or output artifact: %s", p)
     return PIL.Image.open(p, "r", ["PNG"])
 
 
 def save_artifact(art: Artifact, p: Path) -> None:
-    logging.debug("Saving artifact: %s", p)
+    LOGGER.debug("Saving artifact: %s", p)
     art.save(p, format="PNG")
 
 
 def dup_artifact(src: Path, dst: Path) -> None:
-    logging.debug("Duplicating artifact: %s -> %s", src, dst)
+    LOGGER.debug("Duplicating artifact: %s -> %s", src, dst)
     shutil.copyfile(src, dst)
diff --git a/tool/src/aurora_iconset_builder/assemblicon/artproc.py b/tool/src/aurora_iconset_builder/assemblicon/lowlevel/artproc.py
similarity index 100%
rename from tool/src/aurora_iconset_builder/assemblicon/artproc.py
rename to tool/src/aurora_iconset_builder/assemblicon/lowlevel/artproc.py
diff --git a/tool/src/aurora_iconset_builder/assemblicon/artrender.py b/tool/src/aurora_iconset_builder/assemblicon/lowlevel/artrdr.py
similarity index 90%
rename from tool/src/aurora_iconset_builder/assemblicon/artrender.py
rename to tool/src/aurora_iconset_builder/assemblicon/lowlevel/artrdr.py
index 15d658a..d102a9f 100644
--- a/tool/src/aurora_iconset_builder/assemblicon/artrender.py
+++ b/tool/src/aurora_iconset_builder/assemblicon/lowlevel/artrdr.py
@@ -39,7 +39,16 @@ def render_svg(src: Path, dst: Path, kind: SvgRenderKind, cfg: SvgConfig) -> Non
     :param kind: The selected SVG render kind.
     :param cfg: The configuration when rendering.
     """
-    logging.debug("Rendering SVG artifact with render %s: %s -> %s", kind.name, src, dst)
+    logging.debug(
+        "Rendering SVG artifact with render %s: %s -> %s", kind.name, src, dst
+    )
+
+    # YYC MARK:
+    # Inkscape will silently quit with return code 0
+    # if given source file doesn't exist in file system.
+    # So we need to check whether it is existing and popularize it to all render.
+    if not src.is_file():
+        raise ValueError(f"Source SVG file is not presented in file system: {src}")
 
     match kind:
         case SvgRenderKind.Inkscape:
@@ -78,8 +87,7 @@ def render_svg(src: Path, dst: Path, kind: SvgRenderKind, cfg: SvgConfig) -> Non
     proc = subprocess.run(cmd, capture_output=False)
     if proc.returncode != 0:
         raise RuntimeError(
-            f"Fail to execute SVG render {kind.name}. "
-            f"Return code is {proc.returncode}"
+            f"Fail to execute SVG render {kind.name}. Return code is {proc.returncode}"
         )
 
 
@@ -135,6 +143,11 @@ def render_blender(src: Path, dst: Path, temp_script: Path, cfg: BlenderConfig)
     """
     logging.debug("Rendering Blender artifact: %s -> %s", src, dst)
 
+    if not src.is_file():
+        raise ValueError(
+            f"Source Blender composition file is not presented in file system: {src}"
+        )
+
     script = _BLENDER_RENDER_SCRIPT.format(
         width=cfg.width, height=cfg.height, dst=repr(str(dst))
     )
@@ -160,7 +173,7 @@ def render_blender(src: Path, dst: Path, temp_script: Path, cfg: BlenderConfig)
 def render_thumbnail(art: Artifact, hws: Iterable[int]) -> Iterator[Artifact]:
     """
     Render given artifact as multiple resolution thumbnails.
-    
+
     :param art: The artifact to be rendered.
     :param hws: The int iterable holding all resolution of thumbnails (square thumbnail only)
     :return: A generator outputing thumbnail one by one with the order of given resolution.
@@ -176,7 +189,7 @@ def render_thumbnail(art: Artifact, hws: Iterable[int]) -> Iterator[Artifact]:
 def render_ico(art: Artifact, dst: Path) -> None:
     """
     Render given artifact as Windows ICO in given path.
-    
+
     :param art: The artifact to be rendered.
     :param dst: The path to rendered result.
     """
@@ -198,7 +211,7 @@ def render_ico(art: Artifact, dst: Path) -> None:
 def render_icns(art: Artifact, dst: Path) -> None:
     """
     Render given artifact as macOS ICNS in given path.
-    
+
     :param art: The artifact to be rendered.
     :param dst: The path to rendered result.
     """
diff --git a/tool/src/aurora_iconset_builder/assemblicon/lowlevel/utils.py b/tool/src/aurora_iconset_builder/assemblicon/lowlevel/utils.py
new file mode 100644
index 0000000..46c0b2e
--- /dev/null
+++ b/tool/src/aurora_iconset_builder/assemblicon/lowlevel/utils.py
@@ -0,0 +1,5 @@
+from PIL.Image import Image
+from PIL.ImageFile import ImageFile
+
+type Artifact = Image
+type ArtifactFile = ImageFile
diff --git a/tool/src/aurora_iconset_builder/assemblicon/utils.py b/tool/src/aurora_iconset_builder/assemblicon/utils.py
deleted file mode 100644
index 5e80e08..0000000
--- a/tool/src/aurora_iconset_builder/assemblicon/utils.py
+++ /dev/null
@@ -1,20 +0,0 @@
-import logging
-from PIL.Image import Image
-from PIL.ImageFile import ImageFile
-
-type Artifact = Image
-type ArtifactFile = ImageFile
-
-
-def setup_logging() -> None:
-    logging.basicConfig(format="[%(levelname)s] %(message)s", level=logging.INFO)
-
-
-VANILLA_ARTIFACT_HW: int = 1024
-
-
-def check_vanilla_artifact(art: Artifact) -> None:
-    if art.size != (VANILLA_ARTIFACT_HW, VANILLA_ARTIFACT_HW):
-        raise ValueError(
-            f"Icon art must be {VANILLA_ARTIFACT_HW}x{VANILLA_ARTIFACT_HW}, got {art.width}x{art.height} instead"
-        )
diff --git a/tool/src/aurora_iconset_builder/cli.py b/tool/src/aurora_iconset_builder/cli.py
deleted file mode 100644
index 0b75e85..0000000
--- a/tool/src/aurora_iconset_builder/cli.py
+++ /dev/null
@@ -1,42 +0,0 @@
-import argparse
-import enum
-from dataclasses import dataclass
-from .assemblicon import artrender
-
-
-class SvgRender(enum.StrEnum):
-    Inkscape = "inkscape"
-    ReSvg = "resvg"
-
-    def to_assemblicon_type(self) -> artrender.SvgRenderKind:
-        match self:
-            case SvgRender.Inkscape:
-                return artrender.SvgRenderKind.Inkscape
-            case SvgRender.ReSvg:
-                return artrender.SvgRenderKind.ReSvg
-
-
-@dataclass(frozen=True)
-class Cli:
-    svg_render: SvgRender
-
-
-def parse() -> Cli:
-    parser = argparse.ArgumentParser(
-        prog="Aurora Icon Set Builder",
-        description="The Programmatic Icon Assembly Workflow for Aurora Icon Set.",
-    )
-    parser.add_argument(
-        "-s",
-        "--svg-render",
-        dest="svg_render",
-        action="store",
-        type=SvgRender,
-        default=SvgRender.Inkscape,
-        help="The render used for rendering SVG into PNG.",
-        metavar="RENDER",
-    )
-    args = parser.parse_args()
-    return Cli(
-        svg_render=args.svg_render,
-    )