<#
.SYNOPSIS
    Build ROA2WEB Telegram Bot for Windows Server Deployment

.DESCRIPTION
    This script creates a deployment package for the Telegram bot:
    - Copies application source files (app/)
    - Copies requirements.txt
    - Copies PowerShell deployment scripts
    - Creates .env.example template
    - Creates deployment README
    - Excludes development files (venv, data, logs, etc.)
    - Optionally transfers to remote server

.PARAMETER SourcePath
    Path to telegram-bot source (default: ../../reports-app/telegram-bot)

.PARAMETER OutputPath
    Output path for deployment package (default: ../deploy-package/telegram-bot)

.PARAMETER ServerHost
    Remote server hostname/IP for automatic deployment (optional)

.PARAMETER ServerPath
    Remote server path for automatic deployment (optional)

.PARAMETER Clean
    Clean output directory before building (default: true)

.EXAMPLE
    .\Build-TelegramBot.ps1
    Build with defaults

.EXAMPLE
    .\Build-TelegramBot.ps1 -OutputPath "D:\deployments\telegram-bot-$(Get-Date -Format 'yyyyMMdd')"
    Build to custom output path

.EXAMPLE
    .\Build-TelegramBot.ps1 -ServerHost "10.0.20.36" -ServerPath "C:\Temp\telegram-bot-deploy"
    Build and transfer to remote server

.NOTES
    Author: ROA2WEB Team
    Requires: PowerShell 5.1+
    Can run on: WSL, Windows, Linux
#>

[CmdletBinding()]
param(
    [string]$SourcePath = "../../../reports-app/telegram-bot",
    [string]$OutputPath = "../deploy-package/telegram-bot",
    [string]$ServerHost = "",
    [string]$ServerPath = "",
    [bool]$Clean = $true
)

$ErrorActionPreference = "Stop"

# =============================================================================
# HELPER FUNCTIONS
# =============================================================================

function Write-Step {
    param([string]$Message)
    Write-Host "`n[*] $Message" -ForegroundColor Cyan
}

function Write-Success {
    param([string]$Message)
    Write-Host "    [OK] $Message" -ForegroundColor Green
}

function Write-Error {
    param([string]$Message)
    Write-Host "    [ERROR] $Message" -ForegroundColor Red
}

function Write-Warning {
    param([string]$Message)
    Write-Host "    [WARN] $Message" -ForegroundColor Yellow
}

function Resolve-FullPath {
    param([string]$Path)

    $scriptDir = $PSScriptRoot
    $fullPath = Join-Path $scriptDir $Path

    # Convert to absolute path and resolve .. and . properly
    $fullPath = [System.IO.Path]::GetFullPath($fullPath)

    return $fullPath
}

function Test-SourceDirectory {
    param([string]$Path)

    Write-Step "Validating source directory..."

    if (-not (Test-Path $Path)) {
        throw "Source path not found: $Path"
    }

    # Check for required files/directories
    $requiredPaths = @(
        (Join-Path $Path "app"),
        (Join-Path $Path "requirements.txt")
    )

    foreach ($reqPath in $requiredPaths) {
        if (-not (Test-Path $reqPath)) {
            throw "Required path not found: $reqPath"
        }
    }

    Write-Success "Source directory validated: $Path"
}

function New-CleanOutputDirectory {
    param([string]$Path)

    if ($Clean -and (Test-Path $Path)) {
        Write-Step "Cleaning output directory..."
        Remove-Item -Path $Path -Recurse -Force
        Write-Success "Output directory cleaned"
    }

    if (-not (Test-Path $Path)) {
        New-Item -ItemType Directory -Path $Path -Force | Out-Null
        Write-Success "Created output directory: $Path"
    }
}

function Copy-ApplicationFiles {
    param(
        [string]$SourcePath,
        [string]$DestPath
    )

    Write-Step "Copying application files..."

    # Exclude patterns
    $excludeDirs = @(
        "venv",
        "data",
        "logs",
        "temp",
        "backups",
        "__pycache__",
        ".pytest_cache",
        "tests",
        ".git"
    )

    $excludeFiles = @(
        ".env",
        "*.pyc",
        "*.pyo",
        "*.log",
        "*.db",
        ".DS_Store",
        "Thumbs.db"
    )

    # Create app directory in destination
    $destApp = Join-Path $DestPath "app"
    New-Item -ItemType Directory -Path $destApp -Force | Out-Null

    # Copy app/ directory
    $sourceApp = Join-Path $SourcePath "app"
    $fileCount = 0

    Get-ChildItem -Path $sourceApp -Recurse | ForEach-Object {
        # Check if in excluded directory
        $inExcludedDir = $false
        foreach ($excludeDir in $excludeDirs) {
            if ($_.FullName -like "*\$excludeDir\*" -or $_.FullName -like "*/$excludeDir/*") {
                $inExcludedDir = $true
                break
            }
        }

        if ($inExcludedDir) {
            return
        }

        # Check if excluded file
        $isExcludedFile = $false
        foreach ($pattern in $excludeFiles) {
            if ($_.Name -like $pattern) {
                $isExcludedFile = $true
                break
            }
        }

        if ($isExcludedFile) {
            return
        }

        # Calculate relative path and destination
        $relativePath = $_.FullName.Substring($sourceApp.Length)
        $destFile = Join-Path $destApp $relativePath

        if ($_.PSIsContainer) {
            # Create directory
            if (-not (Test-Path $destFile)) {
                New-Item -ItemType Directory -Path $destFile -Force | Out-Null
            }
        } else {
            # Copy file
            $destFileDir = Split-Path $destFile -Parent
            if (-not (Test-Path $destFileDir)) {
                New-Item -ItemType Directory -Path $destFileDir -Force | Out-Null
            }
            Copy-Item -Path $_.FullName -Destination $destFile -Force
            $fileCount++
        }
    }

    Write-Success "Copied $fileCount application files"
}

function Copy-RequirementsFile {
    param(
        [string]$SourcePath,
        [string]$DestPath
    )

    Write-Step "Copying requirements.txt..."

    $sourceReq = Join-Path $SourcePath "requirements.txt"
    $destReq = Join-Path $DestPath "requirements.txt"

    if (Test-Path $sourceReq) {
        Copy-Item -Path $sourceReq -Destination $destReq -Force
        Write-Success "requirements.txt copied"
    } else {
        Write-Warning "requirements.txt not found in source"
    }
}

function New-EnvironmentTemplate {
    param([string]$DestPath)

    Write-Step "Creating .env.example template..."

    $envTemplate = @"
# ROA2WEB Telegram Bot - Production Configuration Template

# Telegram Bot Configuration
TELEGRAM_BOT_TOKEN=your_production_bot_token_from_@BotFather

# Claude API Configuration
CLAUDE_API_KEY=your_production_claude_api_key_from_anthropic_console

# Backend API Configuration
BACKEND_URL=http://localhost:8000
BACKEND_TIMEOUT=30

# SQLite Database Configuration
SQLITE_DB_PATH=C:\inetpub\wwwroot\roa2web\telegram-bot\data\telegram_bot.db

# Internal API Configuration (for backend callbacks)
INTERNAL_API_HOST=127.0.0.1
INTERNAL_API_PORT=8002

# Logging Configuration
LOG_LEVEL=INFO
LOG_FILE=C:\inetpub\wwwroot\roa2web\telegram-bot\logs\bot.log

# Environment
ENVIRONMENT=production

# Authentication Configuration
AUTH_CODE_EXPIRY_MINUTES=15
JWT_REFRESH_THRESHOLD_MINUTES=5

# Session Configuration
SESSION_TIMEOUT_MINUTES=60
MAX_CONVERSATION_HISTORY=20
"@

    $envPath = Join-Path $DestPath ".env.example"
    Set-Content -Path $envPath -Value $envTemplate -Encoding UTF8
    Write-Success ".env.example template created"
}

function Copy-DeploymentScripts {
    param(
        [string]$SourceScriptsPath,
        [string]$DestPath
    )

    Write-Step "Copying deployment scripts..."

    $scriptsDir = Join-Path $DestPath "scripts"
    New-Item -ItemType Directory -Path $scriptsDir -Force | Out-Null

    # List of scripts to copy
    $scripts = @(
        "Install-TelegramBot.ps1",
        "Deploy-TelegramBot.ps1",
        "Start-TelegramBot.ps1",
        "Stop-TelegramBot.ps1",
        "Restart-TelegramBot.ps1",
        "Backup-TelegramDB.ps1",
        "Setup-DailyBackup.ps1",
        "Setup-ClaudeAuth.ps1"
    )

    $copiedCount = 0
    foreach ($script in $scripts) {
        $sourcePath = Join-Path $SourceScriptsPath $script
        if (Test-Path $sourcePath) {
            $destScript = Join-Path $scriptsDir $script
            Copy-Item -Path $sourcePath -Destination $destScript -Force
            $copiedCount++
        } else {
            Write-Warning "Script not found: $script"
        }
    }

    Write-Success "Copied $copiedCount deployment scripts"
}

function Copy-ConfigTemplates {
    param(
        [string]$SourceConfigPath,
        [string]$DestPath
    )

    Write-Step "Copying configuration templates..."

    $configDir = Join-Path $DestPath "config"
    New-Item -ItemType Directory -Path $configDir -Force | Out-Null

    # Copy .env.production.windows.telegram if it exists
    $prodEnv = Join-Path $SourceConfigPath ".env.production.windows.telegram"
    if (Test-Path $prodEnv) {
        Copy-Item -Path $prodEnv -Destination (Join-Path $configDir ".env.production.windows.telegram") -Force
        Write-Success "Production config template copied"
    }
}

function New-DeploymentReadme {
    param([string]$DestPath)

    Write-Step "Creating deployment README..."

    $readme = @"
# ROA2WEB Telegram Bot - Deployment Package

**Created**: $(Get-Date -Format "yyyy-MM-dd HH:mm:ss")
**Version**: Production Deployment Package

## Contents

- ``app/`` - Telegram bot application source code
- ``scripts/`` - PowerShell deployment and management scripts
- ``config/`` - Configuration templates
- ``requirements.txt`` - Python dependencies
- ``.env.example`` - Environment configuration template
- ``README.txt`` - This file

## Deployment Instructions

### 1. Initial Installation

Run as Administrator on Windows Server:

```powershell
cd scripts
.\Install-TelegramBot.ps1
```

This will:
- Check Python 3.11+ installation
- Install NSSM (service manager)
- Create directory structure
- Create virtual environment
- Install Python dependencies
- Create Windows Service (ROA2WEB-TelegramBot)
- Create configuration template

### 2. Configuration

Edit the ``.env`` file:

```powershell
notepad C:\inetpub\wwwroot\roa2web\telegram-bot\.env
```

Required settings:
- ``TELEGRAM_BOT_TOKEN`` - Get from @BotFather on Telegram
- ``CLAUDE_API_KEY`` - Get from Anthropic console
- ``BACKEND_URL`` - Usually http://localhost:8000

### 3. Start Service

```powershell
cd C:\inetpub\wwwroot\roa2web\telegram-bot\scripts
.\Start-TelegramBot.ps1
```

### 4. Verify Deployment

Check health endpoint:

```powershell
Invoke-WebRequest http://localhost:8002/internal/health
```

View logs:

```powershell
Get-Content C:\inetpub\wwwroot\roa2web\telegram-bot\logs\stdout.log -Tail 50 -Wait
```

## Management Commands

- **Start**: ``.\Start-TelegramBot.ps1``
- **Stop**: ``.\Stop-TelegramBot.ps1``
- **Restart**: ``.\Restart-TelegramBot.ps1``
- **Deploy Update**: ``.\Deploy-TelegramBot.ps1 -SourcePath "path\to\new\package"``
- **Backup Database**: ``.\Backup-TelegramDB.ps1``
- **Setup Daily Backup**: ``.\Setup-DailyBackup.ps1``

## Directory Structure

```
C:\inetpub\wwwroot\roa2web\telegram-bot\
├── app\                 # Application source code
├── venv\                # Python virtual environment
├── data\                # SQLite database (telegram_bot.db)
├── logs\                # Application logs
├── backups\             # Database backups
├── temp\                # Temporary files
├── scripts\             # Management scripts
├── config\              # Configuration templates
├── requirements.txt     # Python dependencies
└── .env                 # Environment configuration
```

## Troubleshooting

### Service won't start

Check logs:

```powershell
Get-Content C:\inetpub\wwwroot\roa2web\telegram-bot\logs\stderr.log -Tail 100
```

### Bot not responding on Telegram

1. Verify service is running: ``Get-Service ROA2WEB-TelegramBot``
2. Check health endpoint: ``Invoke-WebRequest http://localhost:8002/internal/health``
3. Verify ``.env`` configuration (TELEGRAM_BOT_TOKEN)
4. Check logs for errors

### Database errors

Run database backup and check integrity:

```powershell
.\Backup-TelegramDB.ps1
```

## Support

- Documentation: ``C:\inetpub\wwwroot\roa2web\deployment\windows\docs\TELEGRAM_BOT_DEPLOYMENT.md``
- Project repository: ROA2WEB on GitHub
- Contact: ROA2WEB Team

"@

    $readmePath = Join-Path $DestPath "README.txt"
    Set-Content -Path $readmePath -Value $readme -Encoding UTF8
    Write-Success "Deployment README created"
}

function Copy-ClaudeCredentials {
    param([string]$PackagePath)

    Write-Host "`n" + ("=" * 60) -ForegroundColor Yellow
    Write-Host "  OPTIONAL: Claude Credentials" -ForegroundColor Yellow
    Write-Host ("=" * 60) -ForegroundColor Yellow
    Write-Host ""
    Write-Host "If you have Claude Pro/Max credentials from 'claude-code login',"
    Write-Host "you can include them in the deployment package for easy setup."
    Write-Host ""

    $response = Read-Host "Copy Claude credentials to deployment package? (Y/N)"

    if ($response -eq "Y" -or $response -eq "y") {
        # Try to find credentials automatically in both possible locations
        $possiblePaths = @(
            (Join-Path $env:USERPROFILE ".claude\.credentials.json"),  # Correct location
            (Join-Path $env:APPDATA "claude\credentials.json")         # Alternative location
        )

        $defaultCredPath = $null
        foreach ($path in $possiblePaths) {
            if (Test-Path $path) {
                $defaultCredPath = $path
                break
            }
        }

        if ($defaultCredPath) {
            Write-Host "`nFound credentials at: $defaultCredPath" -ForegroundColor Green
            $usePath = Read-Host "Use this path? (Y/N)"

            if ($usePath -eq "Y" -or $usePath -eq "y") {
                $credPath = $defaultCredPath
            } else {
                $credPath = Read-Host "Enter path to credentials.json"
            }
        } else {
            Write-Host "`nCredentials not found at default locations" -ForegroundColor Yellow
            Write-Host "  Checked: $($possiblePaths -join ', ')" -ForegroundColor Gray
            $credPath = Read-Host "Enter full path to credentials.json"
        }

        if (Test-Path $credPath) {
            try {
                $destCredPath = Join-Path $PackagePath "claude-credentials.json"
                Copy-Item -Path $credPath -Destination $destCredPath -Force
                Write-Success "Claude credentials copied to deployment package"
                Write-Host "    Location: $destCredPath" -ForegroundColor Gray
                Write-Host "    The Setup-ClaudeAuth.ps1 script will detect and use this file automatically" -ForegroundColor Gray
                return $true
            } catch {
                Write-Warning "Failed to copy credentials: $_"
                return $false
            }
        } else {
            Write-Warning "Credentials file not found at: $credPath"
            return $false
        }
    } else {
        Write-Host "Skipping credentials copy. You can set up Claude auth manually on the server." -ForegroundColor Gray
        return $false
    }
}

function Transfer-ToServerSSH {
    param([string]$PackagePath)

    Write-Host "`n" + ("=" * 60) -ForegroundColor Yellow
    Write-Host "  OPTIONAL: SSH Transfer to Server" -ForegroundColor Yellow
    Write-Host ("=" * 60) -ForegroundColor Yellow
    Write-Host ""
    Write-Host "You can automatically transfer the deployment package to"
    Write-Host "the Windows Server via SSH/SCP (requires SSH server on Windows)."
    Write-Host ""

    $response = Read-Host "Transfer package to server via SSH? (Y/N)"

    if ($response -eq "Y" -or $response -eq "y") {
        Write-Host ""
        $sshUser = Read-Host "Enter SSH username (e.g., Administrator)"
        $sshHost = Read-Host "Enter server hostname/IP (e.g., 10.0.20.36)"
        $sshPort = Read-Host "Enter SSH port (default: 22, press Enter for default)"
        if ([string]::IsNullOrWhiteSpace($sshPort)) {
            $sshPort = "22"
        }

        $remotePath = Read-Host "Enter remote path (e.g., C:/Temp/telegram-bot-deploy)"

        # Convert Windows path to SCP format if needed
        $remotePath = $remotePath -replace '\\', '/'
        if ($remotePath -match '^[A-Za-z]:') {
            # Convert C:/path to /c/path format for SCP
            $remotePath = $remotePath -replace '^([A-Za-z]):', '/$1'
        }

        Write-Host "`nTransfer Configuration:" -ForegroundColor Cyan
        Write-Host "  Source: $PackagePath"
        Write-Host "  Target: ${sshUser}@${sshHost}:${remotePath}"
        Write-Host "  Port: $sshPort"
        Write-Host ""

        $confirm = Read-Host "Proceed with transfer? (Y/N)"

        if ($confirm -eq "Y" -or $confirm -eq "y") {
            Write-Step "Transferring package via SCP..."

            try {
                # Use SCP to transfer
                $scpTarget = "${sshUser}@${sshHost}:${remotePath}"

                # Build SCP command
                $scpArgs = @(
                    "-P", $sshPort,
                    "-r",
                    $PackagePath,
                    $scpTarget
                )

                Write-Host "    Running: scp $scpArgs" -ForegroundColor Gray

                & scp @scpArgs

                if ($LASTEXITCODE -eq 0) {
                    Write-Success "Package transferred successfully!"
                    Write-Host "    Remote location: $scpTarget" -ForegroundColor Gray
                    return $true
                } else {
                    Write-Warning "SCP transfer failed with exit code: $LASTEXITCODE"
                    Write-Host "    You can transfer manually via RDP or network share" -ForegroundColor Yellow
                    return $false
                }
            } catch {
                Write-Warning "Transfer failed: $_"
                Write-Host "    Make sure 'scp' is available in PATH" -ForegroundColor Yellow
                Write-Host "    Alternative: Use WinSCP, FileZilla, or manual RDP copy" -ForegroundColor Yellow
                return $false
            }
        } else {
            Write-Host "Transfer cancelled" -ForegroundColor Gray
            return $false
        }
    } else {
        Write-Host "Skipping SSH transfer. Transfer package manually via RDP or network share." -ForegroundColor Gray
        return $false
    }
}

function Show-PackageSummary {
    param(
        [string]$PackagePath,
        [bool]$CredentialsCopied,
        [bool]$TransferredToServer
    )

    Write-Host "`n" + ("=" * 80) -ForegroundColor Cyan
    Write-Host "  DEPLOYMENT PACKAGE CREATED SUCCESSFULLY" -ForegroundColor Green
    Write-Host ("=" * 80) -ForegroundColor Cyan

    Write-Host "`nPackage Location:" -ForegroundColor Yellow
    Write-Host "  $PackagePath"

    # Calculate package size
    $files = Get-ChildItem -Path $PackagePath -Recurse -File
    $totalSize = ($files | Measure-Object -Property Length -Sum).Sum / 1MB

    Write-Host "`nPackage Contents:" -ForegroundColor Yellow
    Write-Host "  Files: $($files.Count)"
    Write-Host "  Total Size: $([math]::Round($totalSize, 2)) MB"
    if ($CredentialsCopied) {
        Write-Host "  ✓ Claude credentials included" -ForegroundColor Green
    }

    if ($TransferredToServer) {
        Write-Host "`nDeployment Status:" -ForegroundColor Yellow
        Write-Host "  ✓ Package transferred to server via SSH" -ForegroundColor Green
        Write-Host ""
        Write-Host "Next Steps on Server:" -ForegroundColor Yellow
        Write-Host "  1. SSH to server or RDP"
        Write-Host "  2. Navigate to deployment location"
        Write-Host "  3. Run: scripts\Install-TelegramBot.ps1 (as Administrator)"
        Write-Host "  4. Run: scripts\Setup-ClaudeAuth.ps1 (will auto-detect credentials)"
        Write-Host "  5. Configure: .env file with Telegram bot token"
        Write-Host "  6. Run: scripts\Start-TelegramBot.ps1"
    } else {
        Write-Host "`nNext Steps:" -ForegroundColor Yellow
        Write-Host "  1. Transfer package to Windows Server (10.0.20.36)"
        Write-Host "     - Via network share: Copy-Item -Path $PackagePath -Destination \\10.0.20.36\C$\Temp\telegram-bot-deploy -Recurse"
        Write-Host "     - Via RDP: Manual copy"
        Write-Host "  2. On server, run: scripts\Install-TelegramBot.ps1 (as Administrator)"
        Write-Host "  3. Configure: .env file with production credentials"
        Write-Host "  4. Run: scripts\Start-TelegramBot.ps1"
    }

    Write-Host "`n" + ("=" * 80) -ForegroundColor Cyan
}

function Transfer-ToServer {
    param(
        [string]$PackagePath,
        [string]$ServerHost,
        [string]$ServerPath
    )

    if (-not $ServerHost -or -not $ServerPath) {
        return
    }

    Write-Step "Transferring to server $ServerHost..."

    try {
        # Check if server is reachable
        if (Test-Connection -ComputerName $ServerHost -Count 1 -Quiet) {
            Write-Success "Server is reachable"
        } else {
            Write-Warning "Server is not reachable, skipping transfer"
            return
        }

        # Transfer files (using Copy-Item for network path or RoboCopy)
        $networkPath = "\\$ServerHost\$(($ServerPath -replace ':', '$'))"

        Write-Step "Copying to: $networkPath"

        # Ensure destination exists
        if (-not (Test-Path $networkPath)) {
            New-Item -ItemType Directory -Path $networkPath -Force | Out-Null
        }

        # Copy package
        Copy-Item -Path "$PackagePath\*" -Destination $networkPath -Recurse -Force

        Write-Success "Package transferred to server"
    } catch {
        Write-Warning "Failed to transfer to server: $_"
        Write-Host "    You can manually copy the package from: $PackagePath" -ForegroundColor Yellow
    }
}

# =============================================================================
# MAIN BUILD FLOW
# =============================================================================

function Main {
    Write-Host @"

    ====================================================================
     ROA2WEB Telegram Bot - Build Deployment Package
     Creating production-ready deployment package
    ====================================================================

"@ -ForegroundColor Cyan

    # Resolve paths
    $sourcePath = Resolve-FullPath -Path $SourcePath
    $outputPath = Resolve-FullPath -Path $OutputPath
    $scriptsPath = $PSScriptRoot

    Write-Step "Build Configuration"
    Write-Host "    Source: $sourcePath" -ForegroundColor Gray
    Write-Host "    Output: $outputPath" -ForegroundColor Gray

    try {
        # Build steps
        Test-SourceDirectory -Path $sourcePath
        New-CleanOutputDirectory -Path $outputPath
        Copy-ApplicationFiles -SourcePath $sourcePath -DestPath $outputPath
        Copy-RequirementsFile -SourcePath $sourcePath -DestPath $outputPath
        New-EnvironmentTemplate -DestPath $outputPath
        Copy-DeploymentScripts -SourceScriptsPath $scriptsPath -DestPath $outputPath

        # Copy config templates if they exist
        $configPath = Join-Path (Split-Path $scriptsPath -Parent) "config"
        if (Test-Path $configPath) {
            Copy-ConfigTemplates -SourceConfigPath $configPath -DestPath $outputPath
        }

        New-DeploymentReadme -DestPath $outputPath

        # Interactive: Copy Claude credentials to package
        $credentialsCopied = Copy-ClaudeCredentials -PackagePath $outputPath

        # Interactive: Transfer to server via SSH
        $transferredToServer = $false
        if (-not ($ServerHost -and $ServerPath)) {
            # Interactive SSH transfer
            $transferredToServer = Transfer-ToServerSSH -PackagePath $outputPath
        } else {
            # Legacy non-interactive transfer (if parameters provided)
            Transfer-ToServer -PackagePath $outputPath -ServerHost $ServerHost -ServerPath $ServerPath
            $transferredToServer = $true
        }

        # Show summary with deployment status
        Show-PackageSummary -PackagePath $outputPath -CredentialsCopied $credentialsCopied -TransferredToServer $transferredToServer

        Write-Host "`nBuild completed successfully!" -ForegroundColor Green

    } catch {
        Write-Host "`n[BUILD FAILED] $_" -ForegroundColor Red
        Write-Host $_.ScriptStackTrace -ForegroundColor Red
        exit 1
    }
}

# Run main build
Main