# ESP-IDF Tools Installer for Windows

This directory contains source files required to build the tools installer for Windows.

The installer is built using [Inno Setup](http://www.jrsoftware.org/isinfo.php). At the time of writing, the installer can be built with Inno Setup version 6.0.2.

The main source file of the installer is `idf_tools_setup.iss`. PascalScript code is split into multiple `*.iss.inc` files.

Some functionality of the installer depends on additional programs:

* [Inno Download Plugin](https://bitbucket.org/mitrich_k/inno-download-plugin) — used to download additional files during the installation.

* [7-zip](https://www.7-zip.org) — used to extract downloaded IDF archives.

* [cmdlinerunner](cmdlinerunner/cmdlinerunner.c) — a helper DLL used to run external command-line programs from the installer, capture live console output, and get the exit code.

## Installation of dependencies via Chocolatey

Run with Administrator privileges:

```
choco install inno-download-plugin
```

## Building the installer

### In Docker

This uses `wine-innosetup` Docker image and `build_installer.sh` script. This is how the installer is built in CI.

```
docker run --rm -v $IDF_PATH:/idf -w /idf/tools/windows/tool_setup -it $CI_DOCKER_REGISTRY/wine-innosetup:1 /bin/bash build_installer.sh
```

### Manually, step by step

* Build cmdlinerunner DLL.
  - On Linux/Mac, install mingw-w64 toolchain (`i686-w64-mingw32-gcc`). Then build the DLL using CMake:
    ```
    mkdir -p cmdlinerunner/build
    cd cmdlinerunner/build
    cmake -DCMAKE_TOOLCHAIN_FILE=../toolchain-i686-w64-mingw32.cmake -DCMAKE_BUILD_TYPE=Release ..
    cmake --build .
    ```
    This will produce `cmdlinerunner.dll` in the build directory.
  - On Windows, it is possible to build using Visual Studio, with CMake support installed. By default, VS produces build artifacts in some hard to find directory. You can adjust this in CmakeSettings.json file generated by VS.

* Download 7zip.exe [("standalone console version")](https://www.7-zip.org/download.html) and put it into `unzip` directory (to get `unzip/7za.exe`).

* Download [idf_versions.txt](https://dl.espressif.com/dl/esp-idf/idf_versions.txt) and place it into the current directory. The installer will use it as a fallback, if it can not download idf_versions.txt at run time.

* Create the `dist` directory and populate it with the tools which should be bundled with the installer. At the moment the easiest way to obtain it is to use `install.sh`/`install.bat` in IDF, and then copy the contents of `$HOME/.espressif/dist` directory. If the directory is empty, the installer should still work, and the tools will be downloaded during the installation.

* Build the installer using Inno Setup Compiler: `ISCC.exe idf_tools_setup.iss`.

## Signing the installer

* Obtain the signing key (e.g `key.pem`) and the certificate chain (e.g. `certchain.pem`). Set the environment variables to point to these files:
  - `export KEYFILE=key.pem`
  - `export CERTCHAIN=certchain.pem`

* Run `sign_installer.sh` script. This will ask for the `key.pem` password, and produce the signed installer in the Output directory. If you plan to run the script multiple times, you may also set `KEYPASSWORD` environment variable to the `key.pem` password, to avoid the prompt.

## Development and testing of the installer

Development and testing of the installer can be simplified by using command line parameters which can be passed to the installer.

Select Run - Parameters in Inno Setup and add parameters.

Example of parameters:

```
/SKIPSYSTEMCHECK=yes /IDFVERSIONSURL=http://localhost:8000/idf_versions.txt /GITRESET=no /GITREPO=C:/projects/esp-idf /GITRECURSIVE=no
```

These combinations of parameters will result:
* ``SKIPSYSTEMCHECK=yes`` - The screen with System Check will be skipped.
* ``IDFVERSIONURL`` - idf_versions.txt will be downloaded from localhost:8000
  - it's possible to add branch name into idf_versions.txt, e.g. feature/win_inst
* ``GITRESET=no`` - Git repository won't be reset after clone, it can save time and add custom changes in case of the zip archive with repository
* ``GITREPO`` - The version will be cloned from the specific location, e.g. from a local directory
* ``GITRECURSIVE=no`` - The clone of the repo won't contain modules, it speeds up the cloning process. Use when modules are not necessary.

Documentation of parameters is available in api-guides/tools/idf-windows-installer.rst

### Testing installation in Docker with Windows containers

The testing script is stored in docker-compose.yml. The test perform full silent installation and executes build of get-started example.

Commands for testing multiple versions:

```
$env:IDF_VERSION="v4.1"; docker-compose.exe run idf-setup-test
$env:IDF_VERSION="v4.0.2"; docker-compose.exe run idf-setup-test
$env:IDF_VERSION="v3.3.4"; docker-compose.exe run idf-setup-test
$env:IDF_VERSION="release/v4.2"; docker-compose.exe run idf-setup-test
$env:IDF_VERSION="release/v4.1"; docker-compose.exe run idf-setup-test
$env:IDF_VERSION="release/v4.0"; docker-compose.exe run idf-setup-test
$env:IDF_VERSION="release/v3.3"; docker-compose.exe run idf-setup-test
$env:IDF_VERSION="master"; docker-compose.exe run idf-setup-test
```

The installation log is not displayed immediately on the screen. It's stored in the file and it's displayed when the installation finishes. The glitch of Inno Setup is that in case of failed installation it won't terminate and it keeps hanging.

Recommendation: Use Visual Studio Code with Docker plugin to work with container.
The log file is then accessible under Docker - Containers - Container - Files - Temp - install.txt - right click - Open.
