Fix crash when df produces unexpected output that results in empty
AVAILABLE_SPACE variable, causing 'integer expression expected' error.
Problem:
- df may produce unexpected output format (different locale, unusual
filesystem name spanning lines, or non-standard df implementation)
- While '|| echo "0"' handles pipeline failures, it doesn't trigger if
awk succeeds but produces no output (empty string)
- When AVAILABLE_SPACE is empty, comparison [ "$AVAILABLE_SPACE" -lt 500 ]
fails with 'integer expression expected' error
- With set -e, this causes script to exit unexpectedly
Solution:
- Add AVAILABLE_SPACE=${AVAILABLE_SPACE:-0} before comparison to ensure
variable always has a numeric value (defaults to 0 if empty)
- This gracefully handles edge cases where df/awk produces unexpected output
Address PR review feedback for array-of-objects helpers:
1. Schema resolution: Use getSchemaProperty() instead of manual traversal
- Fixes nested array-of-objects schema lookup (e.g., news.custom_feeds)
- Now properly descends through .properties for nested objects
2. Reindexing: Replace brittle regex with targeted patterns
- Only replace index in bracket notation [0], [1], etc. for names
- Only replace _item_<digits> pattern for IDs (not arbitrary digits)
- Use specific function parameter patterns for onclick handlers
- Prevents corruption of fieldId, pluginId, or other numeric values
3. File upload: Disable widget until properly implemented
- Hide/disable upload button with clear message
- Show existing logos if present but disable upload functionality
- Prevents silent failures when users attempt to upload files
- Added TODO comments for future implementation
Also fixes exit code handling in one-shot-install.sh to properly capture
first_time_install.sh exit status before error trap fires.
- Create comprehensive one-shot installer with robust error handling
- Includes network checks, disk space validation, and retry logic
- Handles existing installations gracefully (idempotent)
- Updates README with quick install command prominently featured
- Manual installation instructions moved to collapsible section
The script provides explicit error messages and never fails silently.
All prerequisites are validated before starting installation.
