#!/usr/bin/env pwsh
# migrate-types.ps1 - 类型导入迁移脚本
# 用法: ./scripts/migrate-types.ps1 [-DryRun]

param(
    [switch]$DryRun
)

$ErrorActionPreference = "Stop"
$ProjectRoot = Split-Path -Parent $PSScriptRoot

Write-Host "========================================" -ForegroundColor Cyan
Write-Host "  Type Import Migration Script" -ForegroundColor Cyan
Write-Host "========================================" -ForegroundColor Cyan
Write-Host ""

if ($DryRun) {
    Write-Host "🔍 DRY RUN MODE - No files will be modified" -ForegroundColor Yellow
    Write-Host ""
}

# 定义迁移规则
$MigrationRules = @(
    @{
        Pattern = "from ['`"]\.\.\/models\/User['`"]"
        Replacement = "from '@shared/types'"
        Description = "User model import"
    },
    @{
        Pattern = "from ['`"]\.\.\/models\/Product['`"]"
        Replacement = "from '@shared/types'"
        Description = "Product model import"
    },
    @{
        Pattern = "from ['`"]\.\.\/models\/Order['`"]"
        Replacement = "from '@shared/types'"
        Description = "Order model import"
    },
    @{
        Pattern = "from ['`"]\.\.\/types\/user['`"]"
        Replacement = "from '@shared/types'"
        Description = "User type import (frontend)"
    },
    @{
        Pattern = "from ['`"]\.\.\/types\/product['`"]"
        Replacement = "from '@shared/types'"
        Description = "Product type import (frontend)"
    },
    @{
        Pattern = "from ['`"]\.\.\/types\/order['`"]"
        Replacement = "from '@shared/types'"
        Description = "Order type import (frontend)"
    }
)

$TotalFiles = 0
$TotalChanges = 0

# 迁移后端文件
Write-Host "[1/2] Migrating server files..." -ForegroundColor Yellow
$ServerFiles = Get-ChildItem -Path "$ProjectRoot/server/src" -Include "*.ts" -Recurse

foreach ($File in $ServerFiles) {
    $Content = Get-Content $File.FullName -Raw
    $OriginalContent = $Content
    $FileChanged = $false
    
    foreach ($Rule in $MigrationRules) {
        if ($Content -match $Rule.Pattern) {
            $Content = $Content -replace $Rule.Pattern, $Rule.Replacement
            Write-Host "  📝 $($File.Name): $($Rule.Description)" -ForegroundColor Gray
            $FileChanged = $true
        }
    }
    
    if ($FileChanged) {
        $TotalFiles++
        $TotalChanges++
        
        if (-not $DryRun) {
            Set-Content -Path $File.FullName -Value $Content -NoNewline
        }
    }
}

# 迁移前端文件
Write-Host "[2/2] Migrating dashboard files..." -ForegroundColor Yellow
$DashboardFiles = Get-ChildItem -Path "$ProjectRoot/dashboard/src" -Include "*.ts", "*.tsx" -Recurse

foreach ($File in $DashboardFiles) {
    $Content = Get-Content $File.FullName -Raw
    $OriginalContent = $Content
    $FileChanged = $false
    
    foreach ($Rule in $MigrationRules) {
        if ($Content -match $Rule.Pattern) {
            $Content = $Content -replace $Rule.Pattern, $Rule.Replacement
            Write-Host "  📝 $($File.Name): $($Rule.Description)" -ForegroundColor Gray
            $FileChanged = $true
        }
    }
    
    if ($FileChanged) {
        $TotalFiles++
        $TotalChanges++
        
        if (-not $DryRun) {
            Set-Content -Path $File.FullName -Value $Content -NoNewline
        }
    }
}

Write-Host ""
Write-Host "========================================" -ForegroundColor Cyan
Write-Host "  Migration Summary" -ForegroundColor Cyan
Write-Host "========================================" -ForegroundColor Cyan
Write-Host "  Files processed: $TotalFiles" -ForegroundColor White
Write-Host "  Total changes:   $TotalChanges" -ForegroundColor White

if ($DryRun) {
    Write-Host ""
    Write-Host "  This was a DRY RUN. Run without -DryRun to apply changes." -ForegroundColor Yellow
} else {
    Write-Host ""
    Write-Host "  ✅ Migration complete!" -ForegroundColor Green
    Write-Host "  Please run: ./scripts/check-types.ps1" -ForegroundColor Yellow
}

Write-Host "========================================" -ForegroundColor Cyan