module events

import os
import src.history
import src.snapshot
import src.storage

fn make_repo(name string) !storage.Store {
	dir := os.join_path(os.temp_dir(), 'koh3_events_${os.getpid()}_${name}')
	os.rmdir_all(dir) or {}
	os.mkdir_all(dir, os.MkdirParams{})!
	return storage.create(dir)!
}

fn test_flags_are_derived_from_the_newest_event() {
	mut store := make_repo('flags')!
	defer {
		store.close()
		os.rmdir_all(store.root) or {}
	}
	os.write_file(os.join_path(store.root, 'a.txt'), 'hello\n')!
	save := history.save_worktree(store, store.root, snapshot.Ignore{}, history.SaveInput{
		message: 'first'
	})!

	// Unflagged to begin with: absence of an event is the flag state.
	assert !flag_state(store, save.id)!.flagged

	flag(store, save.id, 'broken build')!
	state := flag_state(store, save.id)!
	assert state.flagged
	assert state.reason == 'broken build'

	clear_flag(store, save.id)!
	assert !flag_state(store, save.id)!.flagged

	// Clearing is itself an event, so flagging stays undoable: the events are
	// all still there, newest simply wins — even when both land in the same
	// second, which is the normal case for an agent.
	all_events := all(store)!
	assert all_events.len == 2
	assert all_events[0].kind == kind_flag
	assert all_events[1].kind == kind_clear
	assert all_events[1].created_at > all_events[0].created_at
}

fn test_event_ids_are_stable_for_the_same_record() {
	first := Event{
		kind:       kind_flag
		save_id:    'abcdef123456'
		reason:     'why'
		created_at: 1790000000
		machine:    'here'
	}
	second := first
	assert event_id(first) == event_id(second)
	assert event_id(first).len == 12
	mut other := first
	other.reason = 'different'
	assert event_id(other) != event_id(first)
}

fn test_strip_events_are_recorded_separately() {
	mut store := make_repo('strip')!
	defer {
		store.close()
		os.rmdir_all(store.root) or {}
	}
	strip(store, 'abc123abc123', 'secrets.txt')!
	stripped := strip_events(store)!
	assert stripped.len == 1
	assert stripped[0].path == 'secrets.txt'
	assert stripped[0].save_id == 'abc123abc123'
}