#!/usr/bin/env pwsh

$pkg_cmd_name = "go"
New-Item "$Env:USERPROFILE\Downloads\webi" -ItemType Directory -Force | Out-Null
$pkg_download = "$Env:USERPROFILE\Downloads\webi\$Env:WEBI_PKG_FILE"

$pkg_src = "$Env:USERPROFILE\.local\opt\$pkg_cmd_name-v$Env:WEBI_VERSION"

$pkg_dst = "$Env:USERPROFILE\.local\opt\$pkg_cmd_name"
$pkg_dst_cmd = "$pkg_dst\bin\$pkg_cmd_name"
$pkg_dst_bin = "$pkg_dst\bin"

if (!(Get-Command "git.exe" -ErrorAction SilentlyContinue)) {
    & "$Env:USERPROFILE\.local\bin\webi-pwsh.ps1" git
    $null = Sync-EnvPath
}

# Fetch archive
if (!(Test-Path -Path "$pkg_download")) {
    Write-Output "Downloading $Env:PKG_NAME from $Env:WEBI_PKG_URL to $pkg_download"
    & curl.exe -A "$Env:WEBI_UA" -fsSL "$Env:WEBI_PKG_URL" -o "$pkg_download.part"
    & Move-Item "$pkg_download.part" "$pkg_download"
}

if (!(Test-Path -Path "$pkg_src")) {
    Write-Output "Installing $pkg_cmd_name"
    # TODO: temp directory

    # Enter opt
    Push-Location .local\tmp

    # Remove any leftover tmp cruft
    Remove-Item -Path "$pkg_cmd_name*" -Recurse -ErrorAction Ignore

    # Unpack archive
    # Windows BSD-tar handles zip. Imagine that.
    Write-Output "Unpacking $pkg_download"
    & tar xf "$pkg_download"

    # Settle unpacked archive into place
    Write-Output "New Name: $pkg_cmd_name-v$Env:WEBI_VERSION"
    Get-ChildItem "$pkg_cmd_name*" | Select-Object -f 1 | Rename-Item -NewName "$pkg_cmd_name-v$Env:WEBI_VERSION"
    Write-Output "New Location: $pkg_src"
    Move-Item -Path "$pkg_cmd_name-v$Env:WEBI_VERSION" -Destination "$Env:USERPROFILE\.local\opt"

    # Exit tmp
    Pop-Location
}

Write-Output "Copying into '$pkg_dst' from '$pkg_src'"
Remove-Item -Path "$pkg_dst" -Recurse -ErrorAction Ignore
Copy-Item -Path "$pkg_src" -Destination "$pkg_dst" -Recurse
if (!(Test-Path -Path go\bin)) { New-Item -Path go\bin -ItemType Directory -Force | Out-Null }

# Add to path
webi_path_add ~/.local/opt/go/bin

# Special to go: add default GOBIN to PATH
webi_path_add ~/go/bin