make windows feel more like zsh

profile.ps1

# ==============================================================================
# 1. Shell Environment & Initialization
# ==============================================================================

# Eject the default, outdated PSReadLine module from memory
Remove-Module PSReadLine -ErrorAction SilentlyContinue

# Import the newly installed version
Import-Module PSReadLine

# PSReadLine Configurations
Set-PSReadLineOption -PredictionSource History
Set-PSReadLineOption -PredictionViewStyle ListView

# Starship Prompt (Renders the Unix look and feel)
if (Get-Command starship -ErrorAction SilentlyContinue) {
    Invoke-Expression (&starship init powershell)
}

# Zoxide (Smart directory jumper)
if (Get-Command zoxide -ErrorAction SilentlyContinue) {
    Invoke-Expression (& { (zoxide init powershell | Out-String) })
}

# ==============================================================================
# 2. Core Unix Utilities & Environment Shims
# ==============================================================================

# Quick Directory Navigation
function ..   { Set-Location .. }
function ...  { Set-Location ../.. }
function .... { Set-Location ../../.. }

# 'la' and 'll' implementations (Handles hidden files and long lists)
function la {
    if (Get-Command eza -ErrorAction SilentlyContinue) {
        eza -a @args
    } else {
        Get-ChildItem -Path $PWD.ProviderPath -Force @args
    }
}

function ll {
    if (Get-Command eza -ErrorAction SilentlyContinue) {
        eza -la @args
    } else {
        Get-ChildItem -Path $PWD.ProviderPath -Force @args | Format-Table Attributes, Name, @{Name="Size(KB)";Expression={[math]::round($_.Length / 1KB, 2)}}, LastWriteTime
    }
}

# 'which' implementation (Returns exact path of executable or function)
function which ($command) {
    $cmd = Get-Command $command -ErrorAction SilentlyContinue
    if ($cmd) {
        $cmd | Select-Object -ExpandProperty Source
    } else {
        Write-Error "Command not found: $command"
    }
}

# 'touch' implementation (Create empty file or update timestamp)
function touch ($file) {
    if (Test-Path $file) {
        (Get-Item $file).LastWriteTime = Get-Date
    } else {
        New-Item -ItemType File -Path $file -Force | Out-Null
    }
}

# 'ln' implementation (Handles standard symbolic links)
# Usage: ln -s target_path link_path
function ln {
    param([string]$arg1, [string]$arg2, [string]$arg3)
    
    if ($arg1 -eq "-s") {
        New-Item -ItemType SymbolicLink -Path $arg3 -Value $arg2
    } else {
        New-Item -ItemType HardLink -Path $arg2 -Value $arg1
    }
}

# Bash-style 'alias' function wrapper
# Usage: alias ll="ls -la" or alias mycmd="git status"
function alias {
    param([string]$expression)
    
    if (-not $expression -or -not ($expression -contains "=")) {
        Get-Alias | Select-Object Name, Definition
        return
    }

    $name, $definition = $expression -split '=', 2
    $name = $name.Trim()
    $definition = $definition.Trim().Trim('"').Trim("'")

    if (-not ($definition -match '\s')) {
        Set-Alias -Name $name -Value $definition -Scope Global -Force
    } else {
        ScriptBlock::Create("function Global:$name { $definition `$args }") | Invoke-Command
    }
}

# 'export' implementation (Sets environment variables for the current session)
# Usage: export MY_VAR="value"
function export {
    param([string]$expression)
    if ($expression -match '=') {
        $name, $value = $expression -split '=', 2
        $value = $value.Trim('"').Trim("'")
        [System.Environment]::SetEnvironmentVariable($name, $value, "Process")
    }
}

# 'ps' implementation (Supports 'aux' syntax and converts objects to searchable text lines)
# Usage: ps aux | grep node
function ps {
    param([string]$flags)

    if ($flags -match 'a|u|x') {
        Get-Process | ForEach-Object {
            [PSCustomObject]@{
                PID    = $_.Id
                Name   = $_.ProcessName
                CPU    = [math]::Round($_.CPU, 2)
                WS_MB  = [math]::Round($_.WorkingSet / 1MB, 2)
                Id     = $_.Id
            }
        } | Out-String -Stream
    } else {
        Get-Process @args
    }
}

# 'pkill' implementation (Kill processes easily by application name)
# Usage: pkill node
function pkill ($name) {
    Stop-Process -Name $name -Force -ErrorAction SilentlyContinue
}

# Clear Terminal Shorthand
Set-Alias -Name c -Value Clear-Host

# ==============================================================================
# 3. Modern CLI Upgrades (Dynamic Mappings with Force Teardown)
# ==============================================================================

# Forcefully remove built-in locked aliases so our modern binaries can take over
if (Get-Alias cat  -ErrorAction SilentlyContinue) { Remove-Item alias:\cat  -Force -ErrorAction SilentlyContinue }
if (Get-Alias ls   -ErrorAction SilentlyContinue) { Remove-Item alias:\ls   -Force -ErrorAction SilentlyContinue }
if (Get-Alias grep -ErrorAction SilentlyContinue) { Remove-Item alias:\grep -Force -ErrorAction SilentlyContinue }

# Drop-in modern CLI tools if they are available on the machine
if (Get-Command bat -ErrorAction SilentlyContinue) { Set-Alias cat bat }
if (Get-Command eza -ErrorAction SilentlyContinue) { Set-Alias ls eza }
if (Get-Command fd -ErrorAction SilentlyContinue)  { Set-Alias find fd }

# Prioritize ripgrep -> system native grep -> custom object function match
if (Get-Command rg -ErrorAction SilentlyContinue) { 
    Set-Alias grep rg 
} elseif (Get-Command grep -ErrorAction SilentlyContinue) {
    # Let system-installed native GNU grep.exe execute directly
} else {
    function grep ($pattern, $path="*") { Select-String -Pattern $pattern -Path $path }
}

# ==============================================================================
# 4. Custom Functions & Shortcuts
# ==============================================================================

# Fixed Hist Function (Safe from quote parsing errors)
function hist {
    param([string]$Find)
    $HistoryPath = (Get-PSReadlineOption).HistorySavePath

    if (-not $Find) {
        Get-Content $HistoryPath | Get-Unique | more
        return
    }

    Write-Host "Searching history for: $Find" -ForegroundColor Cyan
    Get-Content $HistoryPath | Where-Object { $_ -like "*$Find*" } | Get-Unique | more
}

# Git Shortcuts
function gs  { git status @args }
function ga  { git add @args }
function gc  { git commit @args }
function gcm { git commit -m $args[0] }
function gp  { git push @args }

# ==============================================================================
# 5. External Tooling Integrations (Chocolatey, etc.)
# ==============================================================================
$ChocolateyProfile = "$env:ChocolateyInstall\helpers\chocolateyProfile.psm1"
if (Test-Path($ChocolateyProfile)) {
    Import-Module "$ChocolateyProfile"
}