extends RefCounted

## Round manager tests — state machine logic, constants, win conditions.
##
## Tests pure logic functions and constants. The state machine itself
## requires NetworkTime.tick and a multiplayer peer for server checks,
## so we test the isolated decision functions here.

const ROUNDS_TO_WIN := 13
const MAX_ROUNDS := 24

# RoundState enum values (mirrors RoundManager.RoundState)
enum RoundState { WARMUP = 0, FREEZE_TIME = 1, ACTIVE = 2, ROUND_END = 3 }

func test_round_state_enum_values() -> String:
	var e := ""
	var w = RoundState.WARMUP
	if w != 0: e += "  WARMUP should be 0"
	if int(RoundState.FREEZE_TIME) != 1: e += "  FREEZE_TIME should be 1"
	if int(RoundState.ACTIVE) != 2:      e += "  ACTIVE should be 2"
	if int(RoundState.ROUND_END) != 3:  e += "  ROUND_END should be 3"
	return e

func test_check_match_over_by_score() -> String:
	# _check_match_over() returns true if any team reaches rounds_to_win
	var e := ""

	# Scenario: T has 13, CT has 5 → match over
	var t_score := ROUNDS_TO_WIN
	var ct_score := 5
	if not (t_score >= ROUNDS_TO_WIN):
		e += "  T should win at %d rounds" % ROUNDS_TO_WIN

	# Scenario: CT has 13, T has 7 → match over
	t_score = 7
	ct_score = ROUNDS_TO_WIN
	if not (ct_score >= ROUNDS_TO_WIN):
		e += "  CT should win at %d rounds" % ROUNDS_TO_WIN

	# Scenario: Both below threshold → match not over
	t_score = 8
	ct_score = 9
	if (t_score >= ROUNDS_TO_WIN) or (ct_score >= ROUNDS_TO_WIN):
		e += "  Neither team should have won yet"
	return e

func test_check_match_over_by_round_limit() -> String:
	# If round_number >= max_rounds → match over
	var e := ""

	# Round 24 of 24 → over
	var round_num := MAX_ROUNDS
	if not (round_num >= MAX_ROUNDS):
		e += "  Round %d should end the match" % MAX_ROUNDS

	# Round 12 of 24 → not over
	round_num = 12
	if round_num >= MAX_ROUNDS:
		e += "  Round 12 should not end the match"
	return e

func test_check_match_over_8_8_tie() -> String:
	# 8-8 at round 16 → match not over (no one hit 13)
	var t_score := 8
	var ct_score := 8
	var round_num := 16
	var over := (t_score >= ROUNDS_TO_WIN) or (ct_score >= ROUNDS_TO_WIN) or (round_num >= MAX_ROUNDS)
	if over:
		return "8-8 at round 16 should not end the match"
	return ""

func test_check_match_over_12_12_overtime_possible() -> String:
	# 12-12 at round 24 → match over (max_rounds reached)
	var t_score := 12
	var ct_score := 12
	var round_num := 24
	var over := (t_score >= ROUNDS_TO_WIN) or (ct_score >= ROUNDS_TO_WIN) or (round_num >= MAX_ROUNDS)
	if not over:
		return "12-12 at round 24 should end the match (max rounds)"
	return ""

func test_count_alive_basic() -> String:
	# Simulate alive tracking
	var alive := { 101: true, 102: true, 103: false, 104: true }
	var team_assignments := { 101: 0, 102: 0, 103: 0, 104: 1 }

	var t_count := 0
	var ct_count := 0
	for pid in team_assignments:
		var is_alive = alive.get(pid, false)
		if is_alive:
			if team_assignments[pid] == 0:  # T
				t_count += 1
			elif team_assignments[pid] == 1:  # CT
				ct_count += 1

	var e := ""
	if t_count != 2:   e += "  T should have 2 alive, got %d" % t_count
	if ct_count != 1:  e += "  CT should have 1 alive, got %d" % ct_count
	return e

func test_count_alive_all_dead() -> String:
	var alive := { 101: false, 102: false }
	var team_assignments := { 101: 0, 102: 1 }

	var t_count := 0
	var ct_count := 0
	for pid in team_assignments:
		var is_alive = alive.get(pid, false)
		if is_alive:
			if team_assignments[pid] == 0:
				t_count += 1
			elif team_assignments[pid] == 1:
				ct_count += 1

	var e := ""
	if t_count != 0:   e += "  T alive should be 0"
	if ct_count != 0:  e += "  CT alive should be 0"
	return e

func test_elimination_win() -> String:
	# CT all dead → T wins by elimination
	var alive := { 101: true, 102: true, 103: false, 104: false }
	var team_assignments := { 101: 0, 102: 0, 103: 1, 104: 1 }

	var t_alive := 0
	var ct_alive := 0
	for pid in team_assignments:
		var is_alive = alive.get(pid, false)
		if is_alive:
			if team_assignments[pid] == 0:  t_alive += 1
			elif team_assignments[pid] == 1: ct_alive += 1

	# T wins if CT alive == 0
	if ct_alive != 0:
		return "CT should be eliminated"
	if t_alive <= 0:
		return "T should have survivors"

	return ""

func test_bomb_prevents_elimination_win() -> String:
	# All Ts dead BUT bomb is planted → round continues (T can still win via explosion)
	var alive := { 101: false, 102: false, 103: true, 104: true }
	var team_assignments := { 101: 0, 102: 0, 103: 1, 104: 1 }
	var bomb_planted := true

	var t_alive := 0
	var ct_alive := 0
	for pid in team_assignments:
		var is_alive = alive.get(pid, false)
		if is_alive:
			if team_assignments[pid] == 0:  t_alive += 1
			elif team_assignments[pid] == 1: ct_alive += 1

	# Logic from round-manager.gd:108
	var should_end := false
	if ct_alive == 0:
		should_end = true  # T wins
	elif t_alive == 0 and not bomb_planted:
		should_end = true  # CT wins

	if should_end:
		return "Round should NOT end — bomb is planted"
	return ""

func test_timeout_win() -> String:
	# Bomb not planted, time runs out → CT win
	var bomb_planted := false
	var time_expired := true

	if time_expired and not bomb_planted:
		# CT wins
		return ""  # pass

	return "CT should win on timeout if bomb not planted"