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

const LOG_DIR = path.join(os.homedir(), ".opencode-matrix-plugin")
const LOG_FILE = path.join(LOG_DIR, "plugin.log")

let appLog: ((data: any) => Promise<void>) | null = null

export function setAppLog(fn: (data: any) => Promise<void>): void {
  appLog = fn
}

export function log(message: string): void {
  // Try OpenCode's logging API first
  if (appLog) {
    appLog({
      service: "matrix-plugin",
      level: "info",
      message,
    }).catch(() => {
      // Fallback to file logging
      try {
        fs.mkdirSync(LOG_DIR, { recursive: true })
        fs.appendFileSync(LOG_FILE, `[${new Date().toISOString()}] [matrix-plugin] ${message}\n`)
      } catch {
        // silent
      }
    })
  } else {
    // No app log available, use file logging
    try {
      fs.mkdirSync(LOG_DIR, { recursive: true })
      fs.appendFileSync(LOG_FILE, `[${new Date().toISOString()}] [matrix-plugin] ${message}\n`)
    } catch {
      // silent
    }
  }
}

export function logError(message: string): void {
  // Try OpenCode's logging API first
  if (appLog) {
    appLog({
      service: "matrix-plugin",
      level: "error",
      message,
    }).catch(() => {
      // Fallback to file logging
      try {
        fs.mkdirSync(LOG_DIR, { recursive: true })
        fs.appendFileSync(LOG_FILE, `[${new Date().toISOString()}] [matrix-plugin] ERROR: ${message}\n`)
      } catch {
        // silent
      }
    })
  } else {
    // No app log available, use file logging
    try {
      fs.mkdirSync(LOG_DIR, { recursive: true })
      fs.appendFileSync(LOG_FILE, `[${new Date().toISOString()}] [matrix-plugin] ERROR: ${message}\n`)
    } catch {
      // silent
    }
  }
}