<# tg.ps1 — PowerShell helpers for tg_post.py (now with Topic support)

Usage examples (after loading this file in $PROFILE):
  tg "Hello"                                  # text to default target
  tg "Bold" -Html                             # HTML text
  tg -Text "*Bold*" -Md -NoPreview            # Markdown, no link preview
  tgPhoto -Path "cover.jpg" -Caption "New"    # photo with caption
  tgVideo -Path "clip.mp4" -Caption "Ep.1"    # video with caption
  tgFile  -Path "report.pdf" -Caption "Q3"    # any document

  # Post into a forum topic (topic root message id)
  tg "In a topic"      -To -1001234567890 -TopicId 54321
  tgPhoto -Path x.jpg  -To -1001234567890 -TopicId 54321 -Caption "Pic in topic"
#>

# ---- Config (edit these) ----
$DefaultTo   = "@TrueDelta"   # Default target (channel/group/user). Change if needed.
$Python      = "python"       # Or full path to python.exe if not in PATH
$ScriptPath  = Join-Path $PSScriptRoot "tg_post.py"   # Path to the Python script

# ---- Internal helper ----
function Invoke-TgPost {
    param(
        [Parameter(Mandatory=$false)][string]$To = $DefaultTo,
        [Parameter(Mandatory=$false)][string]$Text,
        [switch]$Html,
        [switch]$Md,
        [switch]$NoPreview,
        [switch]$Silent,
        [switch]$Pin,
        [int]$Reply,
        [int]$TopicId,

        [string]$Photo,
        [string]$Video,
        [string]$File,
        [string]$Caption
    )

    if (-not (Test-Path $ScriptPath)) {
        Write-Error "tg_post.py not found at '$ScriptPath'. Update `$ScriptPath in tg.ps1."
        return
    }

    $args = @($ScriptPath, "--to", $To)

    if ($Text)      { $args += @("--text", $Text) }
    if ($Html)      { $args += "--html" }
    if ($Md)        { $args += "--md" }
    if ($NoPreview) { $args += "--no-preview" }
    if ($Silent)    { $args += "--silent" }
    if ($Pin)       { $args += "--pin" }
    if ($Reply)     { $args += @("--reply", $Reply) }
    if ($TopicId)   { $args += @("--topic-id", $TopicId) }

    if ($Photo)     { $args += @("--photo", $Photo) }
    if ($Video)     { $args += @("--video", $Video) }
    if ($File)      { $args += @("--file",  $File) }
    if ($Caption)   { $args += @("--caption", $Caption) }

    & $Python $args
}

# ---- Public commands ----

function tg {
<#
.SYNOPSIS
  Send a text message quickly (supports forum topics with -TopicId).
#>
    [CmdletBinding()]
    param(
        [Parameter(Position=0, Mandatory=$false)][string]$Text,
        [string]$To = $DefaultTo,
        [switch]$Html,
        [switch]$Md,
        [switch]$NoPreview,
        [switch]$Silent,
        [switch]$Pin,
        [int]$Reply,
        [int]$TopicId
    )

    if (-not $Text) {
        Write-Error 'Provide message text, e.g.  tg "Hello world"'
        return
    }

    Invoke-TgPost -To $To -Text $Text -Html:$Html -Md:$Md -NoPreview:$NoPreview -Silent:$Silent -Pin:$Pin -Reply:$Reply -TopicId:$TopicId
}

function tgPhoto {
<#
.SYNOPSIS
  Send a photo (optionally with caption). Supports -TopicId.
#>
    [CmdletBinding()]
    param(
        [Parameter(Mandatory=$true)][Alias("File","Image")][string]$Path,
        [string]$Caption,
        [string]$To = $DefaultTo,
        [switch]$Silent,
        [switch]$Pin,
        [int]$Reply,
        [int]$TopicId
    )

    if (-not (Test-Path $Path)) { Write-Error "Photo not found: $Path"; return }
    Invoke-TgPost -To $To -Photo $Path -Caption $Caption -Silent:$Silent -Pin:$Pin -Reply:$Reply -TopicId:$TopicId
}

function tgVideo {
<#
.SYNOPSIS
  Send a video (streamable) with optional caption. Supports -TopicId.
#>
    [CmdletBinding()]
    param(
        [Parameter(Mandatory=$true)][Alias("File")][string]$Path,
        [string]$Caption,
        [string]$To = $DefaultTo,
        [switch]$Silent,
        [switch]$Pin,
        [int]$Reply,
        [int]$TopicId
    )

    if (-not (Test-Path $Path)) { Write-Error "Video not found: $Path"; return }
    Invoke-TgPost -To $To -Video $Path -Caption $Caption -Silent:$Silent -Pin:$Pin -Reply:$Reply -TopicId:$TopicId
}

function tgFile {
<#
.SYNOPSIS
  Send any file/document with optional caption. Supports -TopicId.
#>
    [CmdletBinding()]
    param(
        [Parameter(Mandatory=$true)][string]$Path,
        [string]$Caption,
        [string]$To = $DefaultTo,
        [switch]$Silent,
        [switch]$Pin,
        [int]$Reply,
        [int]$TopicId
    )

    if (-not (Test-Path $Path)) { Write-Error "File not found: $Path"; return }
    Invoke-TgPost -To $To -File $Path -Caption $Caption -Silent:$Silent -Pin:$Pin -Reply:$Reply -TopicId:$TopicId
}

# Optional: quick aliases
Set-Alias -Name tgtext  -Value tg      -Force
Set-Alias -Name tgphoto -Value tgPhoto -Force
Set-Alias -Name tgvideo -Value tgVideo -Force
Set-Alias -Name tgfile  -Value tgFile  -Force