Claude Code.
Powered by DeepSeek.

& {
    $ErrorActionPreference = 'Stop'
    try {
        if (-not (Get-Command node.exe -ErrorAction SilentlyContinue)) {
            throw 'Install Node.js in step 1, then close and reopen PowerShell.'
        }
        $claudePath = Join-Path $env:USERPROFILE '.local\bin\claude.exe'
        if (-not (Test-Path -LiteralPath $claudePath)) {
            throw 'Install Claude Code with the command in step 2, then try again.'
        }

        $setupFolder = Join-Path $env:LOCALAPPDATA 'ClaudeDeepSeekGuide'
        $binFolder = Join-Path $env:USERPROFILE '.local\bin'
        $shortcutPath = Join-Path $binFolder 'claude-deepseek.cmd'
        $marker = 'ClaudeDeepSeekGuide shortcut v1'
        $existing = Get-Command claude-deepseek -ErrorAction SilentlyContinue
        if ($existing -and $existing.Source -ne $shortcutPath) {
            throw 'A different claude-deepseek command already exists. Nothing was replaced. Check the existing installation before continuing.'
        }
        if (Test-Path -LiteralPath (Join-Path $binFolder 'claude-deepseek.ps1')) {
            throw 'An existing DeepSeek PowerShell shortcut was found. Nothing was replaced. Check the existing installation before continuing.'
        }
        if ((Test-Path -LiteralPath $shortcutPath) -and
            -not ((Get-Content -LiteralPath $shortcutPath -Raw).Contains($marker))) {
            throw 'An existing DeepSeek shortcut was found. Nothing was replaced. Check the existing installation before continuing.'
        }
        if ((Test-Path -LiteralPath $setupFolder) -and
            -not (Test-Path -LiteralPath (Join-Path $setupFolder 'guide-install.txt'))) {
            throw 'The setup folder already exists and belongs to another setup. Check the existing installation before continuing.'
        }

        New-Item -ItemType Directory -Path $setupFolder -Force | Out-Null
        New-Item -ItemType Directory -Path $binFolder -Force | Out-Null
        $marker | Set-Content -LiteralPath (Join-Path $setupFolder 'guide-install.txt') -Encoding ASCII
        $launcher = @'
import { spawn, spawnSync, execFileSync } from 'node:child_process';
import { existsSync } from 'node:fs';
import { join } from 'node:path';
import { homedir } from 'node:os';
import { fileURLToPath } from 'node:url';

const directory = fileURLToPath(new URL('.', import.meta.url));
const credentialFile = join(directory, 'credential.dpapi');
const powershell = join(process.env.SystemRoot || 'C:/Windows', 'System32/WindowsPowerShell/v1.0/powershell.exe');
const routes = new Map([
  ['flash', 'deepseek-flash[1m]'],
  ['flash-1m', 'deepseek-flash[1m]'],
  ['deepseek-flash', 'deepseek-flash[1m]'],
  ['deepseek-flash[1m]', 'deepseek-flash[1m]']
]);

function main() {
  const [choice = 'flash', ...extra] = process.argv.slice(2);
  if (['--help', '-h', '--list'].includes(choice)) {
    console.log('Start: claude-deepseek flash\nModel: DeepSeek Flash\nReplace your saved key: claude-deepseek --set-key\nProvider: https://api.deepseek.com/anthropic');
    return;
  }

  if (choice === '--set-key') {
    const saveKey = "$ErrorActionPreference='Stop'; $key=Read-Host 'Paste the DeepSeek API key then press Enter (hidden)' -AsSecureString; try { if ($key.Length -eq 0) { throw 'No key entered. Your previous key has not been changed.' }; $key | ConvertFrom-SecureString | Set-Content -LiteralPath $env:DEEPSEEK_GUIDE_CREDENTIAL_FILE -Encoding ASCII -NoNewline; Write-Host 'Key saved for this Windows account.' -ForegroundColor Green } finally { $key.Dispose() }";
    const result = spawnSync(powershell, ['-NoLogo', '-NoProfile', '-Command', saveKey], {
      env: { ...process.env, DEEPSEEK_GUIDE_CREDENTIAL_FILE: credentialFile },
      stdio: 'inherit'
    });
    if (result.error) throw new Error('Could not open Windows PowerShell to save your key.');
    process.exitCode = result.status ?? 1;
    return;
  }

  const model = routes.get(choice);
  if (!model) throw new Error('This shortcut uses Flash. Start with: claude-deepseek flash');
  if (extra.some(arg => /^--(?:model|fallback-model|settings|setting-sources|agent|agents)(?:=|$)/i.test(arg))) {
    throw new Error('This shortcut keeps the Flash setup fixed. Start with: claude-deepseek flash');
  }
  const claude = join(process.env.USERPROFILE || homedir(), '.local/bin/claude.exe');
  if (!existsSync(claude)) throw new Error('Claude Code was not found. Complete step 2 of the guide first.');
  if (!existsSync(credentialFile)) throw new Error('Save your key first: claude-deepseek --set-key');

  let key;
  try {
    const readKey = "$ErrorActionPreference='Stop'; $s=(Get-Content -LiteralPath $env:DEEPSEEK_GUIDE_CREDENTIAL_FILE -Raw).Trim() | ConvertTo-SecureString; $p=[Runtime.InteropServices.Marshal]::SecureStringToBSTR($s); try { [Console]::Out.Write([Runtime.InteropServices.Marshal]::PtrToStringBSTR($p)) } finally { [Runtime.InteropServices.Marshal]::ZeroFreeBSTR($p); $s.Dispose() }";
    key = execFileSync(powershell, ['-NoLogo', '-NoProfile', '-NonInteractive', '-Command', readKey], {
      env: { ...process.env, DEEPSEEK_GUIDE_CREDENTIAL_FILE: credentialFile },
      encoding: 'utf8', stdio: ['ignore', 'pipe', 'pipe'], windowsHide: true, timeout: 15000
    }).trim();
  } catch {
    throw new Error('Windows could not read your saved key. On this Windows account, run: claude-deepseek --set-key');
  }
  if (!key) throw new Error('Your saved key is empty. Run: claude-deepseek --set-key');

  // Settings apply only to this child process, so other terminals keep their settings.
  const env = { ...process.env };
  for (const name of Object.keys(env)) {
    if (/^(ANTHROPIC_|CLAUDE_|CLAUDECODE$|OPENAI_|CODEX_|METATOOLS_|DEEPSEEK_)/i.test(name)) delete env[name];
  }
  Object.assign(env, {
    ANTHROPIC_BASE_URL: 'https://api.deepseek.com/anthropic',
    ANTHROPIC_AUTH_TOKEN: key,
    ANTHROPIC_API_KEY: '',
    ANTHROPIC_MODEL: model,
    ANTHROPIC_DEFAULT_OPUS_MODEL: model,
    ANTHROPIC_DEFAULT_SONNET_MODEL: model,
    ANTHROPIC_DEFAULT_HAIKU_MODEL: model,
    ANTHROPIC_DEFAULT_FABLE_MODEL: model,
    CLAUDE_CODE_SUBAGENT_MODEL: model,
    CLAUDE_CODE_AUTO_COMPACT_WINDOW: '786432',
    CLAUDE_CODE_DISABLE_NONESSENTIAL_TRAFFIC: '1',
    CLAUDE_CODE_ATTRIBUTION_HEADER: '0',
    CLAUDE_CODE_DISABLE_EXPERIMENTAL_BETAS: '1'
  });
  console.log(`Starting Claude Code with ${model} at api.deepseek.com`);
  const child = spawn(claude, ['--model', model, '--settings', join(directory, 'claude-settings.json'), ...extra], {
    env, stdio: 'inherit'
  });
  child.on('error', () => {
    console.error('Claude Code could not start. Recheck step 2 of the guide.');
    process.exitCode = 1;
  });
  child.on('exit', code => { process.exitCode = code ?? 1; });
}

try { main(); } catch (error) { console.error(error.message); process.exitCode = 1; }
'@
        $pickerSettings = @'
{
  "availableModels": [
    "deepseek-flash",
    "deepseek-flash[1m]"
  ],
  "modelPicker": {
    "replaceBuiltInOptions": true,
    "options": [
      {
        "model": "deepseek-flash[1m]",
        "label": "DeepSeek Flash",
        "description": "The DeepSeek Flash connection for this setup.",
        "behavesAs": "claude-opus-5"
      }
    ]
  }
}
'@
        $shortcut = @'
@echo off
rem ClaudeDeepSeekGuide shortcut v1
node.exe "%LOCALAPPDATA%\ClaudeDeepSeekGuide\launch.mjs" %*
'@
        $launchPath = Join-Path $setupFolder 'launch.mjs'
        $utf8 = New-Object System.Text.UTF8Encoding($false)
        [IO.File]::WriteAllText($launchPath, $launcher, $utf8)
        [IO.File]::WriteAllText((Join-Path $setupFolder 'claude-settings.json'), $pickerSettings, $utf8)
        Set-Content -LiteralPath $shortcutPath -Value $shortcut -Encoding ASCII

        Write-Host 'Now save the DeepSeek API key. It will not appear on screen.' -ForegroundColor Cyan
        & node.exe $launchPath --set-key
        if ($LASTEXITCODE -ne 0) { throw 'The key was not saved. Run this setup again when you have the key.' }

        $userPath = [Environment]::GetEnvironmentVariable('Path', 'User')
        $pathEntries = @($userPath -split ';' | Where-Object { $_ })
        if ($pathEntries -notcontains $binFolder) {
            $updatedPath = (@($binFolder) + $pathEntries) -join ';'
            [Environment]::SetEnvironmentVariable('Path', $updatedPath, 'User')
        }
        if (($env:Path -split ';') -notcontains $binFolder) {
            $env:Path = $binFolder + ';' + $env:Path
        }
        Write-Host ''
        Write-Host 'Setup complete! Next: step 4 in the guide.' -ForegroundColor Green
        Write-Host 'Your everyday command is: claude-deepseek flash'
    } catch {
        Write-Host ('Setup stopped: ' + $_.Exception.Message) -ForegroundColor Red
        Write-Host 'Save the error text when asking for help. Keep your API key private.'
    }
}