// Name: Install Node + Vercel + pnpm
// Description: Installs Node.js (if missing), then pnpm and Vercel CLI globally.
// Author: alexdev888
// GitHub: alexdev888

import "@johnlindquist/kit"

const has = (cmd: string) => {
  try {
    return !!which(cmd)
  } catch {
    return false
  }
}

const run = async (command: string) => {
  try {
    const { all } = await exec(command)
    return { ok: true, out: all || "" }
  } catch (err: any) {
    return { ok: false, out: err?.all || String(err) }
  }
}

let logs: string[] = []
const log = (s: string) => {
  logs.push(s)
  console.log(s)
}

const ensureNode = async () => {
  if (has("node")) {
    log(`✅ Node is already installed: ${(await exec("node -v")).all?.trim()}`)
    return
  }

  log("⬇️ Installing Node.js...")

  if (isMac) {
    if (has("brew")) {
      const r = await run("brew install node")
      log(r.out)
    } else {
      // Fallback to nvm on macOS if Homebrew not found
      const nvmInstall = await run(
        'bash -lc \'curl -o- https://raw.githubusercontent.com/nvm-sh/nvm/v0.39.7/install.sh | bash\''
      )
      log(nvmInstall.out)
      const nvmUse = await run('bash -lc "source ~/.nvm/nvm.sh && nvm install --lts && nvm use --lts"')
      log(nvmUse.out)
    }
  } else if (isLinux) {
    if (has("apt-get")) {
      const ns = await run(
        "curl -fsSL https://deb.nodesource.com/setup_lts.x | sudo -E bash -"
      )
      log(ns.out)
      const inst = await run("sudo apt-get install -y nodejs")
      log(inst.out)
    } else if (has("pacman")) {
      const inst = await run("sudo pacman -S --noconfirm nodejs npm")
      log(inst.out)
    } else if (has("dnf")) {
      const enable = await run("sudo dnf module enable nodejs:20 -y || true")
      log(enable.out)
      const inst = await run("sudo dnf install -y nodejs")
      log(inst.out)
    } else {
      // Fallback to nvm on unknown Linux
      const nvmInstall = await run(
        'bash -lc \'curl -o- https://raw.githubusercontent.com/nvm-sh/nvm/v0.39.7/install.sh | bash\''
      )
      log(nvmInstall.out)
      const nvmUse = await run('bash -lc "source ~/.nvm/nvm.sh && nvm install --lts && nvm use --lts"')
      log(nvmUse.out)
    }
  } else if (isWin) {
    if (has("winget")) {
      const r = await run('winget install -e --id OpenJS.NodeJS.LTS --accept-package-agreements --accept-source-agreements')
      log(r.out)
    } else if (has("choco")) {
      const r = await run("choco install nodejs-lts -y")
      log(r.out)
    } else if (has("scoop")) {
      const r = await run("scoop install nodejs-lts")
      log(r.out)
    } else {
      log("❌ No supported package manager found on Windows (winget/choco/scoop). Please install Node.js LTS manually from https://nodejs.org")
    }
  }

  if (has("node")) {
    log(`✅ Node installed: ${(await exec("node -v")).all?.trim()}`)
  } else {
    log("❌ Node installation appears to have failed or requires a new shell session.")
  }
}

const ensurePnpm = async () => {
  if (has("pnpm")) {
    log(`✅ pnpm is already installed: ${(await exec("pnpm -v")).all?.trim()}`)
    return
  }

  log("⬇️ Installing pnpm...")
  // Try corepack first (Node 16.13+)
  let r = await run("corepack enable || true")
  log(r.out)
  r = await run("corepack prepare pnpm@latest --activate")
  log(r.out)

  if (!has("pnpm")) {
    // Fallback to npm -g
    r = await run("npm i -g pnpm")
    log(r.out)
  }

  if (has("pnpm")) {
    log(`✅ pnpm installed: ${(await exec("pnpm -v")).all?.trim()}`)
  } else {
    log("❌ pnpm installation appears to have failed.")
  }
}

const ensureVercel = async () => {
  if (has("vercel")) {
    log(`✅ Vercel CLI is already installed: ${(await exec("vercel --version")).all?.trim()}`)
    return
  }

  log("⬇️ Installing Vercel CLI globally...")
  if (has("pnpm")) {
    const r = await run("pnpm add -g vercel")
    log(r.out)
  } else {
    const r = await run("npm i -g vercel")
    log(r.out)
  }

  if (has("vercel")) {
    log(`✅ Vercel CLI installed: ${(await exec("vercel --version")).all?.trim()}`)
  } else {
    log("❌ Vercel CLI installation appears to have failed.")
  }
}

// Execute
await ensureNode()
await ensurePnpm()
await ensureVercel()

// Versions summary
const nodeV = has("node") ? (await exec("node -v")).all?.trim() : "not found"
const npmV = has("npm") ? (await exec("npm -v")).all?.trim() : "not found"
const pnpmV = has("pnpm") ? (await exec("pnpm -v")).all?.trim() : "not found"
const vercelV = has("vercel") ? (await exec("vercel --version")).all?.trim() : "not found"

const summary = md(`
# Installation Summary

- Node: ${nodeV}
- npm: ${npmV}
- pnpm: ${pnpmV}
- Vercel: ${vercelV}

${isWin ? "_If commands aren't found, open a new terminal window so PATH updates take effect._" : ""}
`)

await div(summary)