"""Codex CLI: `codex exec --json ... -o last.md -` (stdin prompt), resume with `codex exec resume <thread>`.
Thread id comes from the `thread.started` event in events.jsonl; the last message from last.md."""
import json

from .base import ExecResult, RunnerExecutor, parse_exit


class CodexExecutor(RunnerExecutor):
    stdout_name = "events.jsonl"
    COLLECT = [("read", "exit.txt"), ("read", "last.md"), ("grep", "events.jsonl", "thread.started"),
               ("tail", "stderr.txt", 5), ("tail", "events.jsonl", 1)]

    def collect(self, handle):
        exit_text, last, line, err_tail, last_event = self.fetch(handle, self.COLLECT)   # one remote call
        thread = handle.get("thread_id")
        if line:
            try:
                thread = json.loads(line).get("thread_id") or thread
            except ValueError:
                pass
        tail = (err_tail + "\n" + last_event[-600:]).strip()
        return ExecResult((last or "").strip(), parse_exit(exit_text), thread,
                          self.logs(handle, "events.jsonl", "stderr.txt", "last.md"), tail)