package validate

import (
	"path/filepath"
	"testing"
)

// Regression: validateMobs must reject a fighting mob authored without an
// attack speed (engine.ToTicks clips 0 to 1, so the mob would attack every
// tick) or without a max hit for a declared attack type (a silent no-op).
// Task worksites are explicitly exempt: data/mobs/examples/solar_panel_frame.yaml
// ships max_melee_hit: 0 and must remain valid.

func writeMob(t *testing.T, dir, name, body string) {
	t.Helper()
	writeFile(t, filepath.Join(dir, "mobs", name+".yaml"), body)
}

func TestMobMissingSpeedIsError(t *testing.T) {
	dir := t.TempDir()
	writeMob(t, dir, "test_mob", `id: test_mob
name: test mob
combat:
  kind: combat
  attack_types: [crush]
  stats:
    hp: 10
    speed: 0
    max_melee_hit: 5
`)
	issues := validateMobs(newSource(dir))
	if !containsMsg(issues, "stats.speed") {
		t.Fatalf("expected missing-speed error, got: %+v", issues)
	}
}

func TestMobMissingMaxMeleeHitIsError(t *testing.T) {
	dir := t.TempDir()
	writeMob(t, dir, "test_mob", `id: test_mob
name: test mob
combat:
  kind: combat
  attack_types: [crush]
  stats:
    hp: 10
    speed: 5
    max_melee_hit: 0
`)
	issues := validateMobs(newSource(dir))
	if !containsMsg(issues, "max_melee_hit") {
		t.Fatalf("expected missing-melee-hit error, got: %+v", issues)
	}
}

func TestMobMissingMaxRangedHitIsError(t *testing.T) {
	dir := t.TempDir()
	writeMob(t, dir, "test_mob", `id: test_mob
name: test mob
combat:
  kind: combat
  attack_types: [crush, ranged]
  stats:
    hp: 10
    speed: 5
    max_melee_hit: 3
`)
	issues := validateMobs(newSource(dir))
	if !containsMsg(issues, "max_ranged_hit") {
		t.Fatalf("expected missing-ranged-hit error, got: %+v", issues)
	}
}

func TestTaskWorksiteMobExemptFromCombatStatChecks(t *testing.T) {
	dir := t.TempDir()
	writeMob(t, dir, "test_worksite", `id: test_worksite
name: test worksite
combat:
  kind: task
  attack_types: [crush]
  stats:
    hp: 10
    speed: 0
    max_melee_hit: 0
`)
	if issues := validateMobs(newSource(dir)); len(issues) != 0 {
		t.Fatalf("task worksite must be exempt from combat-stat checks, got: %+v", issues)
	}
}

func TestValidCombatMobProducesNoIssue(t *testing.T) {
	dir := t.TempDir()
	writeMob(t, dir, "test_mob", `id: test_mob
name: test mob
combat:
  kind: combat
  attack_types: [slash, ranged, science]
  stats:
    hp: 10
    speed: 4
    max_melee_hit: 3
    max_ranged_hit: 4
    max_science_hit: 5
`)
	if issues := validateMobs(newSource(dir)); len(issues) != 0 {
		t.Fatalf("valid combat mob must validate cleanly, got: %+v", issues)
	}
}