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Copilot AI commented Dec 27, 2025

User description

The roadmap needed restructuring to be usable by AI coding agents. The original document was prose-heavy and lacked the structured format agents need to parse and execute tasks effectively.

Changes

New Documentation Files

  • TASKS.md: 17 task definitions with IDs (BUG-001, FEATURE-002, etc.), acceptance criteria, dependencies, and test commands
  • SPECIFICATIONS.md: Full code specs for new classes (BaseDownloader, DownloadQueue, RateLimiter, AppConfig) with copy-paste implementations
  • POTENTIAL_ISSUES.md: Known blockers (rate limiting, Cloudflare, CTk limitations, thread safety) mapped to affected tasks

ROADMAP.md Restructured

  • Added task index table at top with priority icons (🔴🟠🟡🟢), files, and complexity
  • Reformatted tasks with machine-parseable structure:
PRIORITY: 🔴 CRITICAL
FILE: downloader/downloader.py
PROBLEM: ...
SOLUTION: ...
FIND THIS CODE: ...
REPLACE WITH: ...
DONE WHEN:
- [ ] Acceptance criterion
TEST: python main.py

README.md Updated

  • Added "Contributing with AI Coding Agents" section with prompt templates:
Read ROADMAP.md and implement task BUG-001.
Context: Python desktop app using CustomTkinter.
Follow the FIND/REPLACE instructions in the task.

Documentation Structure

File Purpose
ROADMAP.md Task index + quick-reference format
TASKS.md Detailed breakdowns with context
SPECIFICATIONS.md New class/function implementations
POTENTIAL_ISSUES.md Known blockers per task
Original prompt

On ROADMAP.md, Checl the roadmap and begin inrpoving boyh the layout but also optmize to be used for Cod ing amd agents using ot has work. When complete make the roadmaps and new features into separate tasks so iy easy yo read and make notes of thongsthat MIGHT not qork

Custom agent used: clever-coder
Senior-level coding agent that plans first, explains decisions briefly, fixes issues safely, and continuously suggests improvements


✨ Let Copilot coding agent set things up for you — coding agent works faster and does higher quality work when set up for your repo.


PR Type

Documentation, Enhancement


Description

  • Restructured ROADMAP.md with machine-parseable task format for AI agents

  • Created TASKS.md with 17 detailed task definitions and acceptance criteria

  • Created SPECIFICATIONS.md with full code specifications for new classes

  • Created POTENTIAL_ISSUES.md documenting known blockers and edge cases

  • Added AI agent prompting guide to README.md with copy-paste templates


Diagram Walkthrough

flowchart LR
  A["Original ROADMAP.md<br/>Prose-heavy"] -->|Restructure| B["ROADMAP.md<br/>Task Index + Quick Ref"]
  A -->|Extract Details| C["TASKS.md<br/>17 Task Definitions"]
  A -->|Extract Specs| D["SPECIFICATIONS.md<br/>Class/Function Specs"]
  A -->|Extract Issues| E["POTENTIAL_ISSUES.md<br/>Known Blockers"]
  B -->|Reference| C
  B -->|Reference| D
  B -->|Reference| E
  F["README.md"] -->|Add| G["Agent Prompting Guide<br/>Copy-paste Templates"]
  B -.->|Links to| G
Loading

File Walkthrough

Relevant files
Documentation
ROADMAP.md
Restructure roadmap for AI agent parsing and execution     

ROADMAP.md

  • Restructured from prose-heavy format to machine-parseable task index
    with priority icons
  • Added Quick Start for Agents section with file structure reference
  • Created Task Index table with 17 tasks (BUG, REFACTOR, FEATURE, ARCH,
    TEST)
  • Reformatted each task with PRIORITY, FILE, PROBLEM, SOLUTION,
    FIND/REPLACE, DONE WHEN, TEST sections
  • Added Agent-Optimized Task Format Reference section
  • Added Quick Copy-Paste Prompts for common agent workflows
+523/-13
TASKS.md
Create detailed task definitions with acceptance criteria

TASKS.md

  • New file with 17 detailed task definitions (T001-T017)
  • Each task includes: problem description, context, requirements,
    implementation hints, acceptance criteria, estimated effort
  • Organized by category: Critical Bug Fixes (T001-T003), Medium Priority
    Fixes (T004-T007), Feature Tasks (T008-T017)
  • Includes task dependency graph showing prerequisite relationships
  • Added notes for AI agents on code style, testing, and completion
    verification
+595/-0 
SPECIFICATIONS.md
Provide full code specifications for new features               

SPECIFICATIONS.md

  • New file with 1794 lines of implementation specifications
  • Includes 5 new classes: BaseDownloader (abstract), DownloaderFactory,
    DownloadQueue, RateLimiter, AppConfig
  • Provides complete copy-paste implementations with docstrings and type
    hints
  • Includes data classes: DownloadOptions, DownloadResult, MediaItem,
    QueueItem, NetworkConfig, DownloadConfig, UIConfig
  • Specifies new functions for URL validation, file naming, and utilities
  • Defines UI module structure and component specifications
  • Documents configuration schema (settings.json) and database schema
    updates
  • Includes API contracts for downloader callbacks
+1794/-0
POTENTIAL_ISSUES.md
Document known blockers and edge cases                                     

POTENTIAL_ISSUES.md

  • New file documenting 6 major issues with quick reference table
  • Details for each issue: problem description, impact, workarounds,
    agent instructions
  • Issues covered: rate limiting, Cloudflare protection, CTk limitations,
    thread safety, database locking, translation system
  • Task-specific issues section for FEATURE-001, FEATURE-002,
    FEATURE-003, ARCH-001
  • Testing limitations and environment-specific issues (Windows, macOS,
    Linux)
  • Guidelines for reporting new issues with standard format
+334/-0 
README.md
Add AI agent contribution guide with prompt templates       

README.md

  • Added "Contributing with AI Coding Agents" section (94 lines)
  • Created documentation structure table mapping files to use cases
  • Added example prompts for bug fixes, new features, and refactoring
    tasks
  • Included best practices for agent prompts with 5 key guidelines
  • Added example workflow showing step-by-step agent usage
  • Created task priority guide with icons and agent instructions
  • Provided quick agent commands as copy-paste templates
+103/-0 

…ns and clear prompting instructions

Co-authored-by: primoscope <219755732+primoscope@users.noreply.github.com>
Copilot AI changed the title [WIP] Improve roadmap layout and optimize for coding agents Optimize ROADMAP.md for AI coding agents with structured task definitions Dec 27, 2025
Copilot AI requested a review from primoscope December 27, 2025 05:13
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@primoscope primoscope marked this pull request as ready for review December 27, 2025 05:19
Copilot AI review requested due to automatic review settings December 27, 2025 05:19
@primoscope primoscope merged commit 524f082 into main Dec 27, 2025
3 of 4 checks passed
@qodo-code-review
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PR Compliance Guide 🔍

Below is a summary of compliance checks for this PR:

Security Compliance
Sensitive data exposure

Description: The specifications introduce persisting potentially sensitive user data (e.g., proxy
credentials in AppConfig fields proxy_username/proxy_password and constructing
authenticated proxy URLs, plus queue persistence of user-provided URLs via
DownloadQueue.QUEUE_FILE) to plaintext JSON under resources/config/, which can lead to
local sensitive information exposure if the config directory is readable by other
users/processes or accidentally committed/backed up.
SPECIFICATIONS.md [776-899]

Referred Code
@dataclass
class NetworkConfig:
    """Network-related settings."""
    proxy_enabled: bool = False
    proxy_type: str = "http"  # http, socks4, socks5
    proxy_host: str = ""
    proxy_port: int = 8080
    proxy_username: str = ""
    proxy_password: str = ""
    bandwidth_limit_kbps: int = 0  # 0 = unlimited
    connection_timeout: int = 30
    read_timeout: int = 60


@dataclass
class DownloadConfig:
    """Download-related settings."""
    max_concurrent_downloads: int = 3
    max_retries: int = 3
    retry_interval: float = 2.0
    chunk_size: int = 1048576  # 1MB


 ... (clipped 103 lines)
Ticket Compliance
🎫 No ticket provided
  • Create ticket/issue
Codebase Duplication Compliance
Codebase context is not defined

Follow the guide to enable codebase context checks.

Custom Compliance
🟢
Generic: Meaningful Naming and Self-Documenting Code

Objective: Ensure all identifiers clearly express their purpose and intent, making code
self-documenting

Status: Passed

Learn more about managing compliance generic rules or creating your own custom rules

🔴
Generic: Secure Logging Practices

Objective: To ensure logs are useful for debugging and auditing without exposing sensitive
information like PII, PHI, or cardholder data.

Status:
Secrets in proxy URL: The new AppConfig.get_proxies() specification builds proxy URLs embedding proxy_username
and proxy_password, which can easily end up in logs/debug output and is not structured or
redacted.

Referred Code
def get_proxies(self) -> Optional[Dict[str, str]]:
    """
    Get proxy configuration for requests library.

    Returns:
        Proxy dict for requests, or None if disabled
    """
    if not self.network.proxy_enabled or not self.network.proxy_host:
        return None

    auth = ""
    if self.network.proxy_username:
        auth = f"{self.network.proxy_username}:{self.network.proxy_password}@"

    proxy_url = f"{self.network.proxy_type}://{auth}{self.network.proxy_host}:{self.network.proxy_port}"

    return {
        'http': proxy_url,
        'https': proxy_url,
    }

Learn more about managing compliance generic rules or creating your own custom rules

Generic: Security-First Input Validation and Data Handling

Objective: Ensure all data inputs are validated, sanitized, and handled securely to prevent
vulnerabilities

Status:
Plaintext secret storage: The proposed settings.json schema and AppConfig model include storing proxy_password in
plaintext under resources/config/settings.json without any secure storage/encryption
guidance.

Referred Code
@dataclass
class NetworkConfig:
    """Network-related settings."""
    proxy_enabled: bool = False
    proxy_type: str = "http"  # http, socks4, socks5
    proxy_host: str = ""
    proxy_port: int = 8080
    proxy_username: str = ""
    proxy_password: str = ""
    bandwidth_limit_kbps: int = 0  # 0 = unlimited
    connection_timeout: int = 30
    read_timeout: int = 60


@dataclass
class DownloadConfig:
    """Download-related settings."""
    max_concurrent_downloads: int = 3
    max_retries: int = 3
    retry_interval: float = 2.0
    chunk_size: int = 1048576  # 1MB


 ... (clipped 870 lines)

Learn more about managing compliance generic rules or creating your own custom rules

Generic: Comprehensive Audit Trails

Objective: To create a detailed and reliable record of critical system actions for security analysis
and compliance.

Status:
Audit logging unspecified: The new specifications define generic log_callback usage but do not specify logging
critical actions with required context like user ID, timestamp, and outcome.

Referred Code
    log_callback: Optional[Callable[[str], None]] = None,
    progress_callback: Optional[Callable[[int, int, Dict[str, Any]], None]] = None,
    global_progress_callback: Optional[Callable[[int, int], None]] = None,
):
    """
    Initialize the downloader.

    Args:
        download_folder: Path to save downloaded files
        options: Download configuration options
        log_callback: Function to call with log messages
        progress_callback: Function to call with per-file progress (downloaded, total, metadata)
        global_progress_callback: Function to call with overall progress (completed, total)
    """
    self.download_folder = download_folder
    self.options = options or DownloadOptions()
    self.log_callback = log_callback
    self.progress_callback = progress_callback
    self.global_progress_callback = global_progress_callback

    # Cancellation mechanism - use Event for thread safety


 ... (clipped 76 lines)

Learn more about managing compliance generic rules or creating your own custom rules

Generic: Robust Error Handling and Edge Case Management

Objective: Ensure comprehensive error handling that provides meaningful context and graceful
degradation

Status:
Generic exception handling: The added sample implementations catch broad exceptions and handle failures by print(...)
warnings without a structured logging/monitoring strategy or clear recovery behavior.

Referred Code
def _load(self) -> None:
    """Load queue from disk."""
    if self.QUEUE_FILE.exists():
        try:
            with open(self.QUEUE_FILE, 'r') as f:
                data = json.load(f)
            self._items = [QueueItem.from_dict(item) for item in data]
        except (json.JSONDecodeError, KeyError) as e:
            print(f"Warning: Could not load queue: {e}")
            self._items = []

def _save(self) -> None:
    """Save queue to disk."""
    self.QUEUE_FILE.parent.mkdir(parents=True, exist_ok=True)
    with open(self.QUEUE_FILE, 'w') as f:
        json.dump([item.to_dict() for item in self._items], f, indent=2)

def _notify_change(self) -> None:
    """Notify listeners of queue change."""
    self._save()
    if self._on_change:


 ... (clipped 336 lines)

Learn more about managing compliance generic rules or creating your own custom rules

Generic: Secure Error Handling

Objective: To prevent the leakage of sensitive system information through error messages while
providing sufficient detail for internal debugging.

Status:
Exception details printed: The added example code prints raw exception messages (e.g., config/queue load failures),
which may expose internal details in user-visible consoles depending on how the app is
distributed.

Referred Code
def _load(self) -> None:
    """Load queue from disk."""
    if self.QUEUE_FILE.exists():
        try:
            with open(self.QUEUE_FILE, 'r') as f:
                data = json.load(f)
            self._items = [QueueItem.from_dict(item) for item in data]
        except (json.JSONDecodeError, KeyError) as e:
            print(f"Warning: Could not load queue: {e}")
            self._items = []

Learn more about managing compliance generic rules or creating your own custom rules

Compliance status legend 🟢 - Fully Compliant
🟡 - Partial Compliant
🔴 - Not Compliant
⚪ - Requires Further Human Verification
🏷️ - Compliance label

@qodo-code-review
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PR Code Suggestions ✨

Explore these optional code suggestions:

CategorySuggestion                                                                                                                                    Impact
High-level
Avoid embedding implementation code in documentation

Avoid embedding full code implementations in documentation files like
SPECIFICATIONS.md. This practice creates a dual source of truth, making
maintenance difficult. Instead, implement features directly in Python files.

Examples:

SPECIFICATIONS.md [21-280]
### 1. BaseDownloader (Abstract Base Class)

**File**: `downloader/base.py` (NEW FILE)

**Purpose**: Standardize all downloader implementations with a common interface.

```python
"""
Base downloader class that all site-specific downloaders must inherit from.
"""

 ... (clipped 250 lines)
ROADMAP.md [76-106]
### BUG-001: Fix undefined `log_message` variable

PRIORITY: 🔴 CRITICAL
FILE: downloader/downloader.py
LOCATION: safe_request() method, exception handler for status codes 429, 500-504

PROBLEM:
The variable log_message is used before being defined in the exception handler.
This causes NameError when the server returns 429/500-504 status codes.

... (clipped 21 lines)

</details>




### Solution Walkthrough:



#### Before:
```markdown
// In SPECIFICATIONS.md
### 1. BaseDownloader (Abstract Base Class)
**File**: `downloader/base.py` (NEW FILE)
```python
from abc import ABC, abstractmethod
# ... (many lines of code)
class BaseDownloader(ABC):
    """
    Abstract base class for all site-specific downloaders.
    """
    # ... (full implementation)

2. DownloaderFactory

File: downloader/factory.py (NEW FILE)

# ... (many lines of code)
class DownloaderFactory:
    # ... (full implementation)



#### After:
```markdown
// In downloader/base.py (NEW FILE)
from abc import ABC, abstractmethod
# ... (many lines of code)
class BaseDownloader(ABC):
    """
    Abstract base class for all site-specific downloaders.
    """
    # ... (full implementation)

// In SPECIFICATIONS.md (MODIFIED)
### 1. BaseDownloader (Abstract Base Class)
**File**: `downloader/base.py`
**Purpose**: Standardize all downloader implementations.
**Key Methods**:
- `supports_url(url)`
- `download(url)`
**Note**: See `downloader/base.py` for the full implementation.

Suggestion importance[1-10]: 9

__

Why: This suggestion correctly identifies a critical architectural flaw in the PR's approach, as embedding full implementations in markdown files like SPECIFICATIONS.md creates a severe maintenance burden and a dual source of truth.

High
Possible issue
Implement atomic file write operation

Implement an atomic write in the _save method by writing to a temporary file and
then renaming it to prevent data corruption in queue.json.

SPECIFICATIONS.md [513-517]

 def _save(self) -> None:
-    """Save queue to disk."""
+    """Save queue to disk atomically."""
     self.QUEUE_FILE.parent.mkdir(parents=True, exist_ok=True)
-    with open(self.QUEUE_FILE, 'w') as f:
+    temp_file = self.QUEUE_FILE.with_suffix('.tmp')
+    with open(temp_file, 'w') as f:
         json.dump([item.to_dict() for item in self._items], f, indent=2)
+    temp_file.rename(self.QUEUE_FILE)
  • Apply / Chat
Suggestion importance[1-10]: 8

__

Why: This suggestion correctly identifies a potential data corruption issue in the _save method and proposes an atomic write as a robust solution, which is a critical improvement for data integrity.

Medium
Prevent potential race condition on destroy

Prevent a race condition in QueueDialog by initializing self._refresh_job to
None in init and checking for it in destroy before cancellation.

SPECIFICATIONS.md [1609-1618]

+def __init__(
+    self,
+    parent,
+    queue: DownloadQueue,
+    on_item_action: Optional[Callable[[str, str], None]] = None,
+    translations: Optional[dict] = None,
+    **kwargs
+):
+    """
+    Initialize the queue dialog.
+    ...
+    """
+    super().__init__(parent, **kwargs)
+    
+    self.queue = queue
+    self.on_item_action = on_item_action
+    self.tr = translations or {}
+    self._refresh_job = None
+    
+    self.title(self.tr.get("download_queue", "Download Queue"))
+    self.geometry("600x400")
+    
+    self._create_widgets()
+    self._refresh()
+    
+    # Set up auto-refresh
+    self._refresh_job = self.after(1000, self._auto_refresh)
+
 def _auto_refresh(self):
     """Auto-refresh every second."""
     self._refresh()
     self._refresh_job = self.after(1000, self._auto_refresh)
 
 def destroy(self):
     """Clean up when closing."""
-    if hasattr(self, '_refresh_job'):
+    if self._refresh_job:
         self.after_cancel(self._refresh_job)
     super().destroy()

[To ensure code accuracy, apply this suggestion manually]

Suggestion importance[1-10]: 7

__

Why: The suggestion correctly identifies a potential race condition that could lead to an AttributeError and provides a valid fix by initializing _refresh_job to None, which improves the robustness of the dialog's cleanup logic.

Medium
General
Perform atomic write for configuration

Implement an atomic write for saving the settings file by using a temporary file
and os.replace to prevent data corruption.

app/models/config.py [868-877]

 def save(self) -> None:
-    """Save configuration to file."""
+    """Save configuration to file atomically."""
     self.CONFIG_PATH.parent.mkdir(parents=True, exist_ok=True)
     data = {
         'network': asdict(self.network),
         'download': asdict(self.download),
         'ui': asdict(self.ui),
     }
-    with open(self.CONFIG_PATH, 'w', encoding='utf-8') as f:
+    temp_path = self.CONFIG_PATH.with_suffix('.tmp')
+    with open(temp_path, 'w', encoding='utf-8') as f:
         json.dump(data, f, indent=4)
+    os.replace(temp_path, self.CONFIG_PATH)

[To ensure code accuracy, apply this suggestion manually]

Suggestion importance[1-10]: 8

__

Why: This suggestion correctly identifies a critical data integrity issue where the settings file could be corrupted and proposes a robust atomic write solution, significantly improving the application's reliability.

Medium
Add lock around queue save and notify

Wrap the _save() and _on_change() calls in _notify_change with self._lock to
ensure thread safety and prevent race conditions.

app/models/download_queue.py [519-523]

 def _notify_change(self) -> None:
-    """Notify listeners of queue change."""
-    self._save()
-    if self._on_change:
-        self._on_change()
+    """Notify listeners of queue change in a thread-safe manner."""
+    with self._lock:
+        self._save()
+        if self._on_change:
+            self._on_change()

[To ensure code accuracy, apply this suggestion manually]

Suggestion importance[1-10]: 7

__

Why: The suggestion correctly identifies a potential race condition in _notify_change and proposes using a lock to ensure thread safety, which is a good practice for concurrent operations.

Medium
  • More

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Pull request overview

This PR restructures the project's documentation to make it more accessible and actionable for AI coding agents. The changes transform prose-heavy documentation into machine-parseable, task-oriented formats with clear acceptance criteria, dependencies, and test instructions.

Key changes:

  • Created structured task definitions (TASKS.md) with 17 tasks organized by priority
  • Added comprehensive implementation specifications (SPECIFICATIONS.md) with copy-paste-ready code for new classes
  • Restructured ROADMAP.md with a task index table and standardized task format featuring FIND/REPLACE instructions
  • Enhanced README.md with AI agent prompting guidelines and examples
  • Added POTENTIAL_ISSUES.md documenting known blockers and edge cases

Reviewed changes

Copilot reviewed 5 out of 5 changed files in this pull request and generated 12 comments.

Show a summary per file
File Description
TASKS.md New file providing 17 detailed task definitions with IDs, acceptance criteria, dependencies, and effort estimates
SPECIFICATIONS.md New file containing full code specifications for new classes (BaseDownloader, DownloadQueue, RateLimiter, AppConfig) with implementation details
ROADMAP.md Restructured with task index table, agent-optimized format with FIND/REPLACE instructions, and quick-reference sections
README.md Added "Contributing with AI Coding Agents" section with prompt templates and best practices for using the documentation
POTENTIAL_ISSUES.md New file documenting known issues like rate limiting, Cloudflare protection, CTk limitations, and threading concerns

💡 Add Copilot custom instructions for smarter, more guided reviews. Learn how to get started.


---

## Agent-Optimized Task Format Reference
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Inconsistent naming: The file uses both "agent-optimized" (lowercase in body) and "Agent-Optimized" (title case in section heading at line 1353). Consider standardizing to one style for consistency throughout the document.

Suggested change
## Agent-Optimized Task Format Reference
## agent-optimized Task Format Reference

Copilot uses AI. Check for mistakes.

---

*Last updated: December 2024*
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The "Last updated" timestamp at line 595 and 1794 shows "December 2024", but the PR metadata indicates the current date is December 27, 2025. This timestamp is over a year in the past and should be updated to reflect the actual date of these changes.

Suggested change
*Last updated: December 2024*
*Last updated: December 27, 2025*

Copilot uses AI. Check for mistakes.

---

*Last updated: December 2024*
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The "Last updated" timestamp shows "December 2024", but the PR metadata indicates the current date is December 27, 2025. This timestamp is over a year in the past and should be updated to reflect the actual date of these changes.

Suggested change
*Last updated: December 2024*
*Last updated: December 27, 2025*

Copilot uses AI. Check for mistakes.

---

*Last updated: December 2024*
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The "Last updated" timestamp at lines 1456-1457 shows "December 2024", but the PR metadata indicates the current date is December 27, 2025. This timestamp is over a year in the past and should be updated to reflect the actual date of these changes.

Suggested change
*Last updated: December 2024*
*Last updated: December 27, 2025*

Copilot uses AI. Check for mistakes.

---

*Last updated: December 2024*
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The "Last updated" timestamp shows "December 2024", but the PR metadata indicates the current date is December 27, 2025. This timestamp is over a year in the past and should be updated to reflect the actual date of these changes.

Suggested change
*Last updated: December 2024*
*Last updated: December 27, 2025*

Copilot uses AI. Check for mistakes.
- Callbacks for queue changes
"""

QUEUE_FILE = Path("resources/config/queue.json")
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The DownloadQueue class uses Path("resources/config/queue.json") as QUEUE_FILE on line 488. This hardcoded path may cause issues if the working directory changes or if the application is run from a different location. Consider using a path relative to the module location or making it configurable.

Suggested change
QUEUE_FILE = Path("resources/config/queue.json")
QUEUE_FILE = (Path(__file__).resolve().parent / "resources" / "config" / "queue.json")

Copilot uses AI. Check for mistakes.
Comment on lines +516 to +517
with open(self.QUEUE_FILE, 'w') as f:
json.dump([item.to_dict() for item in self._items], f, indent=2)
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In the DownloadQueue._save() method on lines 513-517, writing directly to the queue file could result in data corruption if the application crashes during the write operation. Consider using atomic writes (write to a temporary file, then rename) to prevent corruption, as mentioned in POTENTIAL_ISSUES.md line 239.

Suggested change
with open(self.QUEUE_FILE, 'w') as f:
json.dump([item.to_dict() for item in self._items], f, indent=2)
import os
import tempfile
tmp_dir = self.QUEUE_FILE.parent
with tempfile.NamedTemporaryFile(
mode='w',
dir=tmp_dir,
prefix=self.QUEUE_FILE.name,
suffix='.tmp',
delete=False,
encoding='utf-8',
) as tmp_file:
json.dump([item.to_dict() for item in self._items], tmp_file, indent=2)
tmp_file.flush()
os.fsync(tmp_file.fileno())
Path(tmp_file.name).replace(self.QUEUE_FILE)

Copilot uses AI. Check for mistakes.
data = json.load(f)
self._items = [QueueItem.from_dict(item) for item in data]
except (json.JSONDecodeError, KeyError) as e:
print(f"Warning: Could not load queue: {e}")
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The error handling in DownloadQueue._load() on lines 509-510 prints a warning to stdout but doesn't log it through a proper logging system. This makes it difficult to diagnose issues in production. Consider using Python's logging module or providing a callback for error reporting.

Suggested change
print(f"Warning: Could not load queue: {e}")
import logging
logging.getLogger(__name__).warning(
"Could not load download queue from %s: %s",
self.QUEUE_FILE,
e,
)

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Comment on lines +863 to +865
network = NetworkConfig(**data.get('network', {}))
download = DownloadConfig(**data.get('download', {}))
ui = UIConfig(**data.get('ui', {}))
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The AppConfig._from_dict() method on lines 861-866 doesn't validate that the nested dictionaries contain valid data before passing them to the dataclass constructors. If the configuration file contains invalid data types or missing required fields, this could raise unexpected exceptions. Consider adding validation or using a try-except block with more specific error handling.

Suggested change
network = NetworkConfig(**data.get('network', {}))
download = DownloadConfig(**data.get('download', {}))
ui = UIConfig(**data.get('ui', {}))
# Ensure nested sections are dictionaries before unpacking into dataclasses.
network_data = data.get('network') or {}
if not isinstance(network_data, dict):
print("Warning: Invalid 'network' section in config; using defaults.")
network_data = {}
download_data = data.get('download') or {}
if not isinstance(download_data, dict):
print("Warning: Invalid 'download' section in config; using defaults.")
download_data = {}
ui_data = data.get('ui') or {}
if not isinstance(ui_data, dict):
print("Warning: Invalid 'ui' section in config; using defaults.")
ui_data = {}
# Construct section configs with per-section error handling so that
# a malformed section does not prevent loading the entire config.
try:
network = NetworkConfig(**network_data)
except (TypeError, ValueError) as e:
print(f"Warning: Could not load 'network' config: {e}; using defaults.")
network = NetworkConfig()
try:
download = DownloadConfig(**download_data)
except (TypeError, ValueError) as e:
print(f"Warning: Could not load 'download' config: {e}; using defaults.")
download = DownloadConfig()
try:
ui = UIConfig(**ui_data)
except (TypeError, ValueError) as e:
print(f"Warning: Could not load 'ui' config: {e}; using defaults.")
ui = UIConfig()

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Comment on lines +1611 to +1617
self._refresh()
self._refresh_job = self.after(1000, self._auto_refresh)

def destroy(self):
"""Clean up when closing."""
if hasattr(self, '_refresh_job'):
self.after_cancel(self._refresh_job)
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The QueueDialog._auto_refresh() method creates an infinite loop of after() calls that's only stopped when the dialog is destroyed. If destroy() is not called properly or if there's an exception before destroy() completes, the after() job may continue running indefinitely, causing a resource leak. Consider adding error handling to ensure the refresh job is cancelled in all code paths.

Suggested change
self._refresh()
self._refresh_job = self.after(1000, self._auto_refresh)
def destroy(self):
"""Clean up when closing."""
if hasattr(self, '_refresh_job'):
self.after_cancel(self._refresh_job)
try:
# If the widget has been destroyed, do not schedule further refreshes.
if not self.winfo_exists():
return
self._refresh()
except Exception:
# Best-effort cancellation of any pending refresh job before propagating the error.
if hasattr(self, '_refresh_job'):
try:
self.after_cancel(self._refresh_job)
except Exception:
pass
else:
self._refresh_job = None
raise
else:
self._refresh_job = self.after(1000, self._auto_refresh)
def destroy(self):
"""Clean up when closing."""
if hasattr(self, '_refresh_job') and self._refresh_job is not None:
try:
self.after_cancel(self._refresh_job)
except Exception:
# If cancellation fails (e.g., job already executed), ignore and proceed.
pass
finally:
self._refresh_job = None

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