package ai

import (
	"context"
	"strings"
	"testing"
	"time"

	"crypto-miner-server/internal/strategy"
)

type mockCourt struct {
	atlas     string
	phenotype *strategy.FleetPhenotype
}

func (m *mockCourt) FailureAtlasSummary(_, _ string) string { return m.atlas }
func (m *mockCourt) BestPhenotype(_, _ string) (*strategy.FleetPhenotype, bool) {
	if m.phenotype == nil {
		return nil, false
	}
	return m.phenotype, true
}

func stuckSpreadAttempts() []TierAttempt {
	attempts := make([]TierAttempt, 0, len(defaultSpreadTiers))
	for _, tier := range defaultSpreadTiers {
		attempts = append(attempts, TierAttempt{Tier: tier, OK: false, Error: "blocked"})
	}
	return attempts
}

func TestBuildCourtPromptProsecutorFailures(t *testing.T) {
	snap := AgentSnapshot{
		AgentID:        "agent-stuck",
		Name:           "stuck-host",
		GOOS:           "windows",
		MiningHashrate: 0,
		Stuck:          true,
		ChainExhausted: true,
		LOTLAttempts:   stuckSpreadAttempts(),
	}
	bundle := BuildCourtPrompt(snap, "docker 8/8 failed (100%)", nil, PersonaBalanced)
	if !strings.Contains(bundle.SystemPrompt, "## PROSECUTOR") {
		t.Fatal("expected prosecutor section in system prompt")
	}
	if !strings.Contains(bundle.ProsecutorSnippet, "14/14 failed") {
		t.Fatalf("prosecutor missing failure count: %s", bundle.ProsecutorSnippet)
	}
	if !strings.Contains(bundle.ProsecutorSnippet, "Failure atlas: docker 8/8 failed") {
		t.Fatalf("prosecutor missing atlas: %s", bundle.ProsecutorSnippet)
	}
}

func TestBuildCourtPromptDefenderPhenotype(t *testing.T) {
	phenotype := &strategy.FleetPhenotype{
		Fingerprint:     "windows|1|0|1|0|0|10.0.0",
		SourceAgentID:   "agent-ok",
		SourceAgentName: "agent-ok",
		ActiveTier:      "container",
		PeakHashrate:    1500,
		TierOrder:       []string{"container", "inprocess"},
	}
	snap := AgentSnapshot{
		AgentID: "agent-stuck",
		Stuck:   true,
		LOTLAttempts: []TierAttempt{
			{Tier: "docker", OK: false, Error: "denied"},
		},
	}
	bundle := BuildCourtPrompt(snap, "", phenotype, PersonaPersuasive)
	if !strings.Contains(bundle.DefenderSnippet, "Fleet phenotype from agent-ok") {
		t.Fatalf("defender missing phenotype: %s", bundle.DefenderSnippet)
	}
	if !strings.Contains(bundle.DefenderSnippet, "Winning tier: container") {
		t.Fatalf("defender missing winning tier: %s", bundle.DefenderSnippet)
	}
	if !strings.Contains(bundle.SystemPrompt, "## DEFENDER") {
		t.Fatal("expected defender section in system prompt")
	}
}

func TestParseCommandsFromCourtResponse(t *testing.T) {
	raw := "Verdict: restart mining after tier exhaustion.\n{\"commands\":[{\"type\":\"restart_mining\",\"args\":{}},{\"type\":\"noop\",\"args\":{}}]}"
	verdict := ExtractJudgeVerdict(raw)
	if !strings.Contains(verdict, "restart mining") {
		t.Fatalf("verdict: %q", verdict)
	}
	cmds := ParseCommands(raw)
	if len(cmds) != 2 || cmds[0].Type != CmdRestartMining {
		t.Fatalf("cmds: %+v", cmds)
	}
}

func TestShouldUseCourtStuckOrAllFailed(t *testing.T) {
	if !ShouldUseCourt(AgentSnapshot{Stuck: true}) {
		t.Fatal("expected court for stuck")
	}
	snap := AgentSnapshot{LOTLAttempts: stuckSpreadAttempts()}
	if !ShouldUseCourt(snap) {
		t.Fatal("expected court when all spread tiers failed")
	}
	if ShouldUseCourt(AgentSnapshot{LOTLAttempts: []TierAttempt{{Tier: "docker", OK: true}}}) {
		t.Fatal("expected mission prompt when a tier succeeded")
	}
}

func TestSchedulerUsesCourtWhenStuck(t *testing.T) {
	old := DecideFunc
	defer func() { DecideFunc = old }()
	var gotSystem, gotUser string
	DecideFunc = func(_ context.Context, _, _, systemPrompt, userPrompt string) (string, error) {
		gotSystem = systemPrompt
		gotUser = userPrompt
		return "Verdict: noop.\n{\"commands\":[{\"type\":\"noop\",\"args\":{}}]}", nil
	}

	exec := &mockExec{}
	store := &mockStore{}
	court := &mockCourt{atlas: "wsl 5/5 failed (100%)"}
	sched := NewScheduler(
		&mockCfg{cfg: Config{Enabled: true, Endpoint: "http://test/v1", IntervalSec: 1}},
		&mockSnap{
			ids: []string{"agent-1"},
			snap: AgentSnapshot{
				AgentID: "agent-1", Name: "host", Stuck: true,
				LOTLAttempts: stuckSpreadAttempts(),
			},
		},
		exec,
		store,
		court,
		nil,
	)
	sched.lastRun["agent-1"] = time.Now().Add(-2 * time.Minute)
	sched.Tick()

	if !strings.Contains(gotSystem, "## PROSECUTOR") {
		t.Fatalf("expected court system prompt, got: %s", gotSystem)
	}
	if !strings.Contains(gotUser, "## JUDGE") {
		t.Fatalf("expected judge user prompt, got: %s", gotUser)
	}
}