docker_entrypoint.ps1

[cmdletbinding()]
param()

function Get-FromEnv {
    [cmdletbinding()]
    param(
        [parameter(Mandatory)]
        $Name,

        [parameter(Mandatory)]
        $Default
    )

    $envValue = Get-ChildItem -Path Env: |
        Where-Object { $_.Name.ToUpper() -eq $Name.ToUpper() } |
            Select-Object -First 1 |
                ForEach-Object {
                    $_.Value
                }
    if ($envValue -eq $null) {
        Write-Verbose "$Name = $Default"
        Write-Output $Default
    } else {
        Write-Verbose "$Name = $envValue"
        Write-Output $envValue
    }
}

$VerbosePreference = 'Continue'

# SLACK_TOKEN and BOT_ADMINS environment variables are REQUIRED
# If they where not passed in then bail
$slackToken = Get-FromEnv -Name 'SLACK_TOKEN' -Default [string]::empty
$BotAdmins = Get-FromEnv -Name 'BOT_ADMINS' -Default @([string]::empty)
if ([string]::IsNullOrEmpty($SlackToken) -or $BotAdmins.Count -eq 0) {
    Write-Error -Message 'Please specify your Slack token and initial list of bot administrators'
    exit 1
}

Import-Module -Name PoshBot -ErrorAction Ignore

$cmdPrefix = Get-FromEnv -Name 'POSHBOT_CMD_PREFIX' -Default '!'

$altCmdPrefixes = Get-FromEnv -Name 'POSHBOT_ALT_CMD_PREFIXES' -Default 'poshbot'
$altCmdPrefixes = $altCmdPrefixes -split ';'

$pluginRepos = Get-FromEnv -Name 'POSHBOT_PLUGIN_REPOSITORIES' -Default 'PSGallery'
$pluginRepos = $pluginRepos -split ';'

$logDir = Get-FromEnv -Name 'POSHBOT_LOG_DIR' -Default 'c:/poshbot_data/logs'

$botName = Get-FromEnv -Name 'POSHBOT_NAME' -Default 'PoshBot_Docker'

$confDir = Get-FromEnv -Name 'POSHBOT_CONF_DIR' -Default 'c:/poshbot_data'

$logLevel = Get-FromEnv -Name 'POSHBOT_LOG_LEVEL' -Default 'Verbose'

$pluginDir = Get-FromEnv -Name 'POSHBOT_PLUGIN_DIR' -Default 'c:/poshbot'

$muteUnknownCommand = Get-FromEnv -Name 'POSHBOT_MUTE_UNKNOWN_CMD' -Default $false

$manifestsToLoad = Get-FromEnv -Name 'POSHBOT_MANIFESTS_TO_LOAD' -Default @()
$manifestsToLoad = $manifestsToLoad -split ';'

$altCmdPrefixSep = Get-FromEnv -Name 'POSHBOT_ALT_CMD_PREFIX_SEP' -Default @(':',',',';')
$altCmdPrefixSep = $altCmdPrefixSep.ToCharArray()

$sendCmdRespToPriv = Get-FromEnv -Name 'POSHBOT_SEND_CMD_RESP_TO_PRIV' -Default @()
$sendCmdRespToPriv = $sendCmdRespToPriv -split ';'

$configPSD1 = (Join-Path -Path $confDir -ChildPath 'PoshBot.psd1')
if (-not (Test-Path -Path $configPSD1)) {
    # Create the initial configuration
    $hash = @{
        Name = $botName
        ConfigurationDirectory = $confDir
        CommandPrefix = $cmdPrefix
        PluginRepository = $pluginRepos
        LogDirectory = $logDir
        BotAdmins = $BotAdmins
        BackendConfiguration = @{
            Token = $slackToken
            Name = 'SlackBackend'
        }
        LogLevel = $logLevel
        AlternateCommandPrefixes = $altCmdPrefixes
        PluginDirectory = $pluginDir
        MuteUnknownCommand = $muteUnknownCommand
        ModuleManifestsToLoad = $manifestsToLoad
        AlternateCommandPrefixSeperators = $altCmdPrefixSep
        SendCommandResponseToPrivate = $sendCmdRespToPriv
        PluginConfiguration = @{}
    }
    $config = New-PoshBotConfiguration @hash -Verbose
    if (-not (Test-Path -Path $confDir)) {
        New-Item -Path $confDir -ItemType Directory -Force > $null
    }
    $config | Save-PoshBotConfiguration -Path $configPSD1 -Force -Verbose
    $pbc = Get-PoshBotConfiguration -Path $configPSD1 -Verbose
} else {
    # There was a previous configuraiton
    # Merge any values from env vars into config
    $config = Import-PowerShellDataFile -Path $configPSD1
    $config.Name = $botName
    $config.ConfigurationDirectory = $confDir
    $config.CommandPrefix = $cmdPrefix
    $config.PluginRepository = $pluginRepos
    $config.LogDirectory = $logDir
    $config.BotAdmins = $BotAdmins
    $config.BackendConfiguration = @{
        Token = $slackToken
        Name = 'SlackBackend'
    }
    $config.LogLevel = $logLevel
    $config.AlternateCommandPrefixes = $altCmdPrefixes
    $config.PluginDirectory = $pluginDir
    $config.MuteUnknownCommand = $muteUnknownCommand
    $config.ModuleManifestsToLoad = $manifestsToLoad
    $config.AlternateCommandPrefixSeperators = $altCmdPrefixSep
    $config.SendCommandResponseToPrivate = $sendCmdRespToPriv

    $config | Save-PoshBotConfiguration -Path $configPSD1 -Force -Verbose
    $pbc = Get-PoshBotConfiguration -Path $configPSD1 -Verbose
}

$backend = New-PoshBotSlackBackend -Configuration $pbc.BackendConfiguration -Verbose
$bot = New-PoshBotInstance -Configuration $pbc -Backend $backend -Verbose
$bot.Start()