// dsh-usage 插件 — Host 半
// 通过 cordis_define 定义（动态 Cordis 插件）。
// 提供两个 Package-private RPC：
//   usage/balance   — 读取 %DSH_HOME%\.credentials.yaml 的 DEEPSEEK_API_KEY，
//                     调用 DeepSeek 官方余额 API（GET /user/balance），返回 JSON。
//   usage/openPortal— 用系统默认浏览器打开官网用量页。
// 密钥只在 node 子进程内读取与使用，绝不打印、不入库。
return {
  inject: ['shell'],
  apply(ctx) {
    harness.handle('usage/balance', async (args) => {
      const script = [
        "const fs = require('node:fs');",
        "const os = require('node:os');",
        "const path = require('node:path');",
        "const home = process.env.DSH_HOME || path.join(os.homedir(), '.dsh');",
        "const file = path.join(home, '.credentials.yaml');",
        "let key = null;",
        "try { const txt = fs.readFileSync(file, 'utf8'); const m = txt.match(/DEEPSEEK_API_KEY:\\s*(\\S+)/); if (m) key = m[1]; } catch (e) {}",
        "if (!key) { console.log(JSON.stringify({ error: 'no-api-key', file: file })); process.exit(0); }",
        "fetch('https://api.deepseek.com/user/balance', { headers: { Authorization: 'Bearer ' + key, Accept: 'application/json' }, signal: AbortSignal.timeout(15000) })",
        "  .then(r => r.json().then(j => console.log(JSON.stringify(Object.assign({ status: r.status }, j)))))",
        "  .catch(e => console.log(JSON.stringify({ error: String((e && e.message) || e) })));",
      ].join('\n')
      try {
        const spec = ctx.shell.resolve({ command: 'node', args: ['-e', script] })
        const res = await ctx.shell.run(spec)
        const stdout = String(res.stdout || '')
        const lines = stdout.trim().split(/\r?\n/).filter(Boolean)
        if (lines.length) return JSON.parse(lines[lines.length - 1])
        return { error: 'empty-output', stderr: String(res.stderr || '').slice(0, 400) }
      } catch (e) {
        return { error: String((e && e.message) || e) }
      }
    })

    harness.handle('usage/openPortal', async () => {
      try {
        const spec = ctx.shell.resolve({ command: 'cmd', args: ['/c', 'start', '', 'https://platform.deepseek.com/usage'] })
        await ctx.shell.run(spec)
        return { ok: true }
      } catch (e) {
        return { ok: false, error: String((e && e.message) || e) }
      }
    })
  },
}