# Activity服务接入YARP网关配置脚本
# PowerShell: pwsh Register-ActivityService.ps1 -GatewayUrl "http://localhost:5000"

param(
    [string]$GatewayUrl = "http://localhost:5000",
    [string]$ServiceName = "activity",
    [string]$ClusterId = "activity-service",
    [string]$PathPattern = "/api/activity/{**path}",
    [string]$InstanceAddress = "http://localhost:5001",
    [string]$DestinationId = "activity-1",
    [int]$Weight = 1,
    [switch]$IsGlobal = $true,
    [string]$TenantCode = ""
)

$ErrorActionPreference = "Stop"

function Register-ActivityService {
    param(
        [string]$GatewayUrl,
        [string]$ServiceName,
        [string]$ClusterId,
        [string]$PathPattern,
        [string]$InstanceAddress,
        [string]$DestinationId,
        [int]$Weight,
        [bool]$IsGlobal,
        [string]$TenantCode
    )

    Write-Host "========================================" -ForegroundColor Cyan
    Write-Host "Activity Service Gateway Configuration" -ForegroundColor Cyan
    Write-Host "========================================" -ForegroundColor Cyan
    Write-Host ""

    # Step 1: Add Service Instance (Cluster)
    Write-Host "[Step 1] Adding service instance to cluster..." -ForegroundColor Yellow
    $instanceBody = @{
        destinationId = $DestinationId
        address       = $InstanceAddress
        weight        = $Weight
    } | ConvertTo-Json

    try {
        $instanceResponse = Invoke-RestMethod -Uri "$GatewayUrl/api/gateway/clusters/$ClusterId/instances" `
            -Method Post `
            -ContentType "application/json" `
            -Body $instanceBody

        Write-Host "  ✓ Instance added: $DestinationId -> $InstanceAddress" -ForegroundColor Green
    }
    catch {
        if ($_.Exception.Response.StatusCode -eq "BadRequest") {
            Write-Host "  ℹ Instance already exists, skipping..." -ForegroundColor Gray
        }
        else {
            throw $_
        }
    }

    # Step 2: Add Route
    Write-Host ""
    Write-Host "[Step 2] Adding gateway route..." -ForegroundColor Yellow

    if ($IsGlobal) {
        $routeBody = @{
            serviceName = $ServiceName
            clusterId   = $ClusterId
            pathPattern = $PathPattern
        } | ConvertTo-Json

        $routeUrl = "$GatewayUrl/api/gateway/routes/global"
        $routeDescription = "global route"
    }
    else {
        $routeBody = @{
            serviceName = $ServiceName
            pathPattern = $PathPattern
        } | ConvertTo-Json

        $routeUrl = "$GatewayUrl/api/gateway/tenants/$TenantCode/routes"
        $routeDescription = "tenant route for $TenantCode"
    }

    try {
        $routeResponse = Invoke-RestMethod -Uri $routeUrl `
            -Method Post `
            -ContentType "application/json" `
            -Body $routeBody

        Write-Host "  ✓ Route added: $PathPattern -> $ClusterId" -ForegroundColor Green
    }
    catch {
        if ($_.Exception.Response.StatusCode -eq "BadRequest") {
            Write-Host "  ℹ Route already exists, skipping..." -ForegroundColor Gray
        }
        else {
            throw $_
        }
    }

    # Step 3: Reload Config
    Write-Host ""
    Write-Host "[Step 3] Reloading gateway configuration..." -ForegroundColor Yellow

    $reloadResponse = Invoke-RestMethod -Uri "$GatewayUrl/api/gateway/reload" -Method Post
    Write-Host "  ✓ Configuration reloaded" -ForegroundColor Green

    # Summary
    Write-Host ""
    Write-Host "========================================" -ForegroundColor Cyan
    Write-Host "Configuration Complete!" -ForegroundColor Cyan
    Write-Host "========================================" -ForegroundColor Cyan
    Write-Host ""
    Write-Host "Service: $ServiceName" -ForegroundColor White
    Write-Host "Cluster: $ClusterId" -ForegroundColor White
    Write-Host "Route:   $routeDescription" -ForegroundColor White
    Write-Host "Pattern: $PathPattern" -ForegroundColor White
    Write-Host "Target:  $InstanceAddress" -ForegroundColor White
    Write-Host ""
    Write-Host "Test the service at:" -ForegroundColor Yellow
    Write-Host "  $GatewayUrl$($PathPattern.Replace('{**path}', 'campaigns'))" -ForegroundColor Cyan
    Write-Host ""
}

# Execute
Register-ActivityService -GatewayUrl $GatewayUrl `
    -ServiceName $ServiceName `
    -ClusterId $ClusterId `
    -PathPattern $PathPattern `
    -InstanceAddress $InstanceAddress `
    -DestinationId $DestinationId `
    -Weight $Weight `
    -IsGlobal $IsGlobal.IsPresent `
    -TenantCode $TenantCode