import fs from "fs"
import os from "os"
import path from "path"

let LOG_DIR = "/tmp/opencode-matrix-plugin"
let LOG_FILE = path.join(LOG_DIR, "plugin.log")

export function setLogDir(dir: string): void {
  LOG_DIR = dir
  LOG_FILE = path.join(dir, "plugin.log")
}

export function log(message: string): void {
  try {
    const timestamp = new Date().toISOString()
    const line = `[${timestamp}] ${message}\n`
    fs.mkdirSync(LOG_DIR, { recursive: true })
    fs.appendFileSync(LOG_FILE, line)
  } catch (e) {
    try {
      const timestamp = new Date().toISOString()
      fs.appendFileSync("/tmp/opencode-matrix-fallback.log", `[${timestamp}] ${message}\n`)
    } catch {
      // silent fallback
    }
  }
}