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

phase, plan, type, wave, depends_on, files_modified, autonomous, requirements, must_haves

phase	plan	type	wave	depends_on	files_modified	autonomous	requirements	must_haves
04-script-generation	01	tdd	1		imptune/generators/script_generator.py imptune/templates/scripts/install.ps1.j2 tests/test_script_generator.py	true	SCRPT-01 SCRPT-04 SCRPT-05	truths artifacts key_links render_install() produces a complete PowerShell script containing pnputil /add-driver, Add-PrinterPort, Add-PrinterDriver, Add-Printer, Set-PrintConfiguration Generated install script contains WOW64 relaunch guard as the first executable block Generated install script contains SYSTEM vs user detection with UAC self-elevation Set-PrintConfiguration receives translated duplex values (TwoSidedLongEdge, TwoSidedShortEdge) All add operations are wrapped in idempotency checks (Get-PrinterPort, Get-Printer) path provides exports imptune/generators/script_generator.py Jinja2 Environment + render_install function with duplex_map render_install path provides min_lines imptune/templates/scripts/install.ps1.j2 PowerShell install template with WOW64, UAC, pnputil, idempotency 30 path provides min_lines tests/test_script_generator.py Unit tests for SCRPT-01, SCRPT-04, SCRPT-05 40 from to via pattern imptune/generators/script_generator.py imptune/templates/scripts/install.ps1.j2 Jinja2 FileSystemLoader _env.get_template.*install from to via pattern imptune/generators/script_generator.py imptune/db/models.py Printer model fields used as template vars printer.name|printer.ip_address|printer.port_name

Create the script generator module and install.ps1 Jinja2 template with full correctness guards.

Purpose: The install script is the most complex of the three scripts (WOW64, UAC, pnputil two-step, idempotency, duplex mapping). Building it first with TDD ensures all edge cases are covered before the simpler templates.

Output: script_generator.py with render_install(), install.ps1.j2 template, and passing unit tests.

<execution_context> @C:/Users/SebastienQUEROL/.claude/get-shit-done/workflows/execute-plan.md @C:/Users/SebastienQUEROL/.claude/get-shit-done/templates/summary.md </execution_context>

@.planning/PROJECT.md @.planning/ROADMAP.md @.planning/STATE.md @.planning/phases/04-script-generation/04-RESEARCH.md

From imptune/db/models.py:

class Printer(BaseModel):
    name = CharField()
    ip_address = CharField()
    port_name = CharField()
    client = ForeignKeyField(Client, null=True, backref="printers")
    driver = ForeignKeyField(Driver, null=True, backref="printers")
    duplex_mode = CharField(default="OneSided")     # "OneSided" | "LongEdge" | "ShortEdge"
    color_mode = BooleanField(default=True)
    paper_size = CharField(default="A4")             # "A4" | "Letter" | "Legal"
    collate = BooleanField(default=True)

class Driver(BaseModel):
    sha256 = CharField(unique=True, index=True)
    original_filename = CharField()
    driver_desc = CharField(null=True)   # JSON list: '["HP Universal Printing PCL 6"]'
    inf_filename = CharField(null=True)  # e.g. "hpcu270u.inf"

From imptune/generators/intunewin_builder.py (pattern reference):

# Existing generator module pattern — script_generator.py follows same structure
# Module-level setup, public render functions

Install script generator with TDD imptune/generators/script_generator.py, imptune/templates/scripts/install.ps1.j2, tests/test_script_generator.py - render_install(printer_name, ip_address, port_name, driver_name, inf_filename, duplex_mode, color_mode, paper_size, collate) returns a string containing valid PowerShell - Output contains WOW64 guard: `$env:PROCESSOR_ARCHITECTURE -eq "x86"` and `SysNative` relaunch as the FIRST executable block - Output contains SYSTEM/admin detection: `WindowsIdentity::GetCurrent()`, `IsSystem`, `IsInRole(Administrator)`, `Start-Process -Verb Runas` - Output contains pnputil two-step: `pnputil.exe /add-driver "$PSScriptRoot\drivers\{inf_filename}" /install` then `Add-PrinterDriver -Name "{driver_name}"` - Output contains idempotent port creation: `Get-PrinterPort` check before `Add-PrinterPort` - Output contains idempotent printer creation: `Get-Printer` check before `Add-Printer` - Output contains `Set-PrintConfiguration` with translated duplex: "LongEdge" -> "TwoSidedLongEdge", "ShortEdge" -> "TwoSidedShortEdge", "OneSided" -> "OneSided" - Output contains correct boolean rendering: color_mode=True -> `$true`, color_mode=False -> `$false` - Output contains paper size and collate values - Script uses proper quoting for printer name, port name, driver name (double-quoted in PS) **RED phase — write tests first in tests/test_script_generator.py:**

1. Create `imptune/templates/scripts/` directory (empty, needed for Jinja2 loader)
2. Write tests that import `render_install` from `imptune.generators.script_generator` and assert on rendered output:
   - `test_render_install_contains_pnputil`: assert `pnputil.exe /add-driver` and `Add-PrinterDriver` in output
   - `test_render_install_print_config`: assert `Set-PrintConfiguration` with `-DuplexingMode TwoSidedLongEdge` when duplex_mode="LongEdge"
   - `test_render_install_wow64_guard`: assert `PROCESSOR_ARCHITECTURE` and `SysNative` in output
   - `test_render_install_uac_guard`: assert `IsSystem` and `Start-Process` and `-Verb Runas` in output
   - `test_render_install_idempotency`: assert `Get-PrinterPort` and `Get-Printer` checks before add operations
   - `test_render_install_booleans`: assert `$true` / `$false` for color and collate
3. Run tests — all MUST fail (RED)

**GREEN phase — implement:**

4. Create `imptune/generators/script_generator.py`:
   - Module-level Jinja2 Environment with `FileSystemLoader` pointing to `imptune/templates/scripts/`
   - `trim_blocks=True`, `lstrip_blocks=True`, `keep_trailing_newline=True`
   - `_duplex_map` dict: `{"OneSided": "OneSided", "LongEdge": "TwoSidedLongEdge", "ShortEdge": "TwoSidedShortEdge"}`
   - `render_install(printer_name, ip_address, port_name, driver_name, inf_filename, duplex_mode, color_mode, paper_size, collate) -> str`
     - Translates duplex_mode via `_duplex_map`
     - Converts color_mode/collate bools to `"true"` / `"false"` (lowercase, template adds `$` prefix)
     - Calls `_env.get_template("install.ps1.j2").render(...)` with all variables
   - Use plain string parameters (not ORM objects) so the function is testable without DB

5. Create `imptune/templates/scripts/install.ps1.j2`:
   Template structure (in this exact order):
   ```
   # Header comment: Generated by ImpTune, printer name, install command hint
   # WOW64 Guard (FIRST executable block)
   if ($env:PROCESSOR_ARCHITECTURE -eq "x86" -and $env:PROCESSOR_ARCHITEW6432) { ... relaunch 64-bit ... exit }
   # SYSTEM/Admin check + UAC elevation
   $id = [System.Security.Principal.WindowsIdentity]::GetCurrent()
   $isSystem = $id.IsSystem
   $isAdmin = ... IsInRole(Administrator)
   if (-not $isSystem -and -not $isAdmin) { Start-Process -Verb Runas ... exit }
   # pnputil driver staging
   pnputil.exe /add-driver "$PSScriptRoot\drivers\{{ inf_filename }}" /install
   # Add-PrinterDriver
   Add-PrinterDriver -Name "{{ driver_name }}"
   # Idempotent port creation
   if (-not (Get-PrinterPort -Name "{{ port_name }}" -ErrorAction SilentlyContinue)) { Add-PrinterPort ... }
   # Idempotent printer creation
   if (-not (Get-Printer -Name "{{ printer_name }}" -ErrorAction SilentlyContinue)) { Add-Printer ... }
   # Set-PrintConfiguration
   Set-PrintConfiguration -PrinterName "{{ printer_name }}" -DuplexingMode {{ duplex_mode }} -Color ${{ color }} -PaperSize {{ paper_size }} -Collate ${{ collate }}
   ```

6. Run tests — all MUST pass (GREEN)

**Important notes:**
- Use plain string args for render_install, NOT Printer ORM object — keeps tests DB-free
- The `_duplex_map` must translate BEFORE passing to template (template receives already-mapped value)
- Boolean values: pass as lowercase string `"true"` / `"false"` so template renders `$true` / `$false` with `${{ color }}`
- Template must use `{{ }}` for all variable interpolation — no `{% set %}` for simple values
- All PowerShell string parameters (printer_name, port_name, driver_name) must be double-quoted in the template

```bash python -m pytest tests/test_script_generator.py -x -q ``` All 6+ tests pass. Rendered install script contains all required blocks in correct order.

<success_criteria>

• render_install() produces complete PowerShell install script
• WOW64 guard appears before any other logic
• UAC self-elevation skips when SYSTEM
• Duplex mode values correctly translated (LongEdge -> TwoSidedLongEdge)
• All add operations wrapped in idempotency checks
• All unit tests pass </success_criteria>

After completion, create `.planning/phases/04-script-generation/04-01-SUMMARY.md`