ImpTune/.planning/phases/04-script-generation/04-01-SUMMARY.md

phase, plan, subsystem, tags, one_liner, dependency_graph, tech_stack, key_files, decisions, metrics

phase	plan	subsystem	tags	one_liner	dependency_graph	tech_stack	key_files	decisions	metrics
04-script-generation	01	script-generator	jinja2 powershell tdd wow64 uac pnputil idempotency	Jinja2-based install.ps1 generator with WOW64 guard, UAC elevation, pnputil two-step, and duplex mapping	requires provides affects render_install install.ps1.j2 imptune.generators.script_generator imptune.templates.scripts	added patterns Jinja2 FileSystemLoader with trim_blocks + lstrip_blocks for PowerShell templates Plain-string function parameters for DB-free unit testability _duplex_map translation dict (model values -> PowerShell cmdlet values)	created modified imptune/generators/script_generator.py imptune/templates/scripts/install.ps1.j2 tests/test_script_generator.py	render_install() takes plain string args (not ORM Printer object) — keeps tests DB-free Boolean color_mode/collate converted to lowercase 'true'/'false' strings; template adds $ prefix _duplex_map translates before rendering: LongEdge->TwoSidedLongEdge, ShortEdge->TwoSidedShortEdge WOW64 guard comment avoids 'pnputil.exe' text to preserve ordering assertion in test	duration completed_date tasks_completed files_created files_modified tests_added tests_passing ~2 min 2026-04-10 1 3 0 7 68

Phase 4 Plan 01: Script Generator (Install) Summary

One-liner: Jinja2-based install.ps1 generator with WOW64 guard, UAC elevation, pnputil two-step, and duplex mapping

What Was Built

A TDD-developed module imptune/generators/script_generator.py with a single public function render_install() that renders the install.ps1.j2 Jinja2 template into a complete, production-ready PowerShell printer install script.

render_install() function

• Takes plain string arguments (no ORM dependency) for easy unit testing
• Translates duplex_mode via _duplex_map before passing to template
• Converts Python booleans to lowercase strings ("true"/"false") for PowerShell $true/$false rendering

install.ps1.j2 template structure (in order)

1. Header comment with printer name and required Intune install command
2. WOW64 guard ($env:PROCESSOR_ARCHITECTURE + SysNative relaunch) — FIRST executable block
3. SYSTEM vs admin detection ([WindowsIdentity]::GetCurrent(), IsSystem, IsInRole(Administrator)) + UAC self-elevation via Start-Process -Verb Runas
4. pnputil two-step: /add-driver to stage INF, then Add-PrinterDriver to register
5. Idempotent port creation: Get-PrinterPort check before Add-PrinterPort
6. Idempotent printer creation: Get-Printer check before Add-Printer
7. Set-PrintConfiguration with translated duplex, color, paper size, collate

TDD Execution

RED Phase (commit b4f2c64)

7 tests written in tests/test_script_generator.py covering SCRPT-01, SCRPT-04, SCRPT-05. All failed with ModuleNotFoundError (confirmed RED).

GREEN Phase (commit 8193e9d)

• imptune/generators/script_generator.py created
• imptune/templates/scripts/install.ps1.j2 created

One auto-fix required during GREEN: template comment contained "pnputil.exe" before the WOW64 PROCESSOR_ARCHITECTURE check text, causing the ordering assertion in test_render_install_wow64_guard to fail. Fixed by removing .exe from the comment text. Not a logic error — purely a textual ordering issue in the rendered output.

All 7 new tests pass. Full suite: 68/68 passing.

Commits

Hash	Type	Description
b4f2c64	test	RED phase — 7 failing tests for script_generator
8193e9d	feat	GREEN phase — script_generator.py + install.ps1.j2

Deviations from Plan

Auto-fixed Issues

1. [Rule 1 - Bug] Template comment contained 'pnputil.exe' before WOW64 guard text

• Found during: GREEN phase test run
• Issue: Comment in the WOW64 guard block header said "pnputil.exe is 64-bit only", so the string "pnputil.exe" appeared in the rendered output before "PROCESSOR_ARCHITECTURE", breaking the ordering assertion in test_render_install_wow64_guard
• Fix: Changed "pnputil.exe is 64-bit only" to "pnputil is 64-bit only" in the template comment
• Files modified: imptune/templates/scripts/install.ps1.j2
• Commit: 8193e9d (included in same GREEN commit)

Self-Check: PASSED

All created files verified on disk. All commits verified in git log.

Item	Status
imptune/generators/script_generator.py	FOUND
imptune/templates/scripts/install.ps1.j2	FOUND
tests/test_script_generator.py	FOUND
Commit b4f2c64 (RED)	FOUND
Commit 8193e9d (GREEN)	FOUND