# Mosaic Bootstrap — Windows Installer
# PowerShell equivalent of install.sh
#
# Usage:
#   powershell -ExecutionPolicy Bypass -File install.ps1
#
$ErrorActionPreference = "Stop"

$SourceDir = $PSScriptRoot
$TargetDir = if ($env:MOSAIC_HOME) { $env:MOSAIC_HOME } else { Join-Path $env:USERPROFILE ".config\mosaic" }

function Write-Ok   { param([string]$Msg) Write-Host "  ✓ " -ForegroundColor Green -NoNewline; Write-Host $Msg }
function Write-Warn { param([string]$Msg) Write-Host "  ⚠ " -ForegroundColor Yellow -NoNewline; Write-Host $Msg }
function Write-Fail { param([string]$Msg) Write-Host "  ✗ " -ForegroundColor Red -NoNewline; Write-Host $Msg }
function Write-Step { param([string]$Msg) Write-Host ""; Write-Host $Msg -ForegroundColor White -BackgroundColor DarkGray }

# ── Install framework ────────────────────────────────────────
Write-Step " Installing Mosaic framework "

if (-not (Test-Path $TargetDir)) { New-Item -ItemType Directory -Path $TargetDir -Force | Out-Null }

Get-ChildItem $TargetDir -Exclude ".git" | Remove-Item -Recurse -Force
Get-ChildItem $SourceDir -Exclude ".git" | ForEach-Object {
    $dest = Join-Path $TargetDir $_.Name
    if ($_.PSIsContainer) {
        Copy-Item $_.FullName $dest -Recurse -Force
    }
    else {
        Copy-Item $_.FullName $dest -Force
    }
}

Write-Ok "Framework installed to $TargetDir"

# ── Post-install tasks ───────────────────────────────────────
Write-Step " Post-install tasks "

$binDir = Join-Path $TargetDir "bin"

try {
    & "$binDir\mosaic-link-runtime-assets.ps1" *>$null
    Write-Ok "Runtime assets linked"
}
catch {
    Write-Warn "Runtime asset linking failed (non-fatal)"
}

if ($env:MOSAIC_SKIP_SKILLS_SYNC -eq "1") {
    Write-Ok "Skills sync skipped (MOSAIC_SKIP_SKILLS_SYNC=1)"
}
else {
    try {
        & "$binDir\mosaic-sync-skills.ps1" *>$null
        Write-Ok "Skills synced"
    }
    catch {
        Write-Warn "Skills sync failed (non-fatal)"
    }
}

try {
    & "$binDir\mosaic-migrate-local-skills.ps1" -Apply *>$null
    Write-Ok "Local skills migrated"
}
catch {
    Write-Warn "Local skill migration failed (non-fatal)"
}

try {
    & "$binDir\mosaic-doctor.ps1" *>$null
    Write-Ok "Health audit passed"
}
catch {
    Write-Warn "Health audit reported issues — run 'mosaic doctor' for details"
}

# ── PATH configuration ───────────────────────────────────────
Write-Step " PATH configuration "

$mosaicBin = Join-Path $TargetDir "bin"
$userPath = [Environment]::GetEnvironmentVariable("Path", "User")
$pathChanged = $false

if ($userPath -and $userPath.Split(";") -contains $mosaicBin) {
    Write-Ok "Already in User PATH"
}
else {
    $newPath = if ($userPath) { "$mosaicBin;$userPath" } else { $mosaicBin }
    [Environment]::SetEnvironmentVariable("Path", $newPath, "User")
    $env:Path = "$mosaicBin;$env:Path"
    Write-Ok "Added to User PATH"
    $pathChanged = $true
}

# ── Summary ──────────────────────────────────────────────────
Write-Host ""
Write-Host "  Mosaic installed successfully." -ForegroundColor Green
Write-Host ""

$nextSteps = @()

if ($pathChanged) {
    $nextSteps += "Open a new terminal (or log out and back in) to activate PATH."
}

$soulPath = Join-Path $TargetDir "SOUL.md"
if (-not (Test-Path $soulPath)) {
    $nextSteps += "Run 'mosaic init' to set up your agent identity (SOUL.md)."
}

if ($nextSteps.Count -gt 0) {
    Write-Host "  Next steps:" -ForegroundColor White
    for ($i = 0; $i -lt $nextSteps.Count; $i++) {
        Write-Host "  $($i + 1). " -NoNewline
        Write-Host $nextSteps[$i] -ForegroundColor Cyan
    }
    Write-Host ""
}