package squad

import (
	"context"
	"os"
	"path/filepath"
	"strings"
	"testing"
)

type stubRunner struct {
	calls []IntentStep
	text  string
	err   error
}

func (r *stubRunner) Run(ctx context.Context, step IntentStep) (*ExecResult, error) {
	r.calls = append(r.calls, step)
	if r.err != nil {
		return nil, r.err
	}
	patches := map[string][]byte{}
	for _, t := range step.Targets {
		patches[t] = []byte(r.text)
	}
	return &ExecResult{Success: true, Patches: patches, Logs: "stub-intent"}, nil
}

func testCatalog() *IntentCatalog {
	return &IntentCatalog{
		Revision: 1,
		Markdown: "## demo.run.status_query — 查询运行进度\n- 槽位 run_id（必填）\n  - 提问建议：要查询哪个运行？\n",
		Specs: map[string]IntentSpecView{
			"demo.run.status_query": {
				ID: "demo.run.status_query", Description: "查询运行进度", Handler: "taskrun.query_status",
				Slots: []IntentSlotView{
					{Key: "run_id", Required: true, Label: "运行编号", Question: "要查询哪个运行？"},
					{Key: "env", Enum: []string{"prod", "staging"}},
				},
				RequiredSlots: []string{"run_id"},
			},
		},
	}
}

func TestValidateIntentSteps(t *testing.T) {
	step := func(id, intent string, slots map[string]string) SquadPlan {
		return SquadPlan{Workflow: WorkflowPlan{Steps: []StepSpec{{ID: id, IntentID: intent, IntentSlots: slots}}}}
	}
	cases := []struct {
		name    string
		plan    SquadPlan
		catalog *IntentCatalog
		wantErr string
	}{
		{"ok", step("s1", "demo.run.status_query", map[string]string{"run_id": "run-1"}), testCatalog(), ""},
		{"no_catalog", step("s1", "demo.run.status_query", nil), nil, "未装配意图目录"},
		{"unknown_intent", step("s1", "demo.nope.x", nil), testCatalog(), "不存在意图"},
		{"missing_required", step("s1", "demo.run.status_query", nil), testCatalog(), "缺必填槽位 run_id（澄清建议：要查询哪个运行？）"},
		{"enum_violation", step("s1", "demo.run.status_query", map[string]string{"run_id": "run-1", "env": "dev"}), testCatalog(), "不在枚举"},
	}
	for _, tc := range cases {
		t.Run(tc.name, func(t *testing.T) {
			err := validateIntentSteps(&tc.plan, tc.catalog)
			if tc.wantErr == "" {
				if err != nil {
					t.Fatalf("unexpected error: %v", err)
				}
				return
			}
			if err == nil || !strings.Contains(err.Error(), tc.wantErr) {
				t.Fatalf("expected error containing %q, got %v", tc.wantErr, err)
			}
		})
	}
}

func newCatalogTestEngine(t *testing.T, runner IntentRunner, catalog *IntentCatalog) *SquadEngine {
	t.Helper()
	engine, _ := newTestEngine(t, NewRulePlanner(),
		map[string]map[string]string{"02_writer": {"output.md": goodReport}}, nil)
	if err := engine.Blueprints().Register(Blueprint{
		Key: "mixed_demo", Title: "混合演示", Match: []string{"混合演示"},
		Steps: []StepSpec{
			{ID: "sys1", Role: "researcher", Title: "查询运行进度",
				IntentID: "demo.run.status_query", IntentSlots: map[string]string{"run_id": "run-42"}},
			{ID: "write1", Role: "writer", Title: "汇总成文", Targets: []string{"output.md"}},
		},
	}); err != nil {
		t.Fatal(err)
	}
	// 产品侧经 Options 在 NewEngine 传入；测试在构造后注入，需同时更新
	// engineDeps（步骤执行走 deps 副本，构建期已定型）。
	engine.opts.IntentCatalog = catalog
	engine.opts.IntentRunner = runner
	engine.deps.IntentRunner = runner
	return engine
}

func TestIntentStepExecutedByRunnerNotBackend(t *testing.T) {
	runner := &stubRunner{text: "# 查询结果\n\nrun-42 进度 100%，内容满足最小质检长度要求，作为系统功能步产物。\n"}
	engine := newCatalogTestEngine(t, runner, testCatalog())
	res, err := engine.Run(context.Background(), Goal{Text: "做一次混合演示", HitlMode: HitlAuto}, RunOptions{})
	if err != nil {
		t.Fatal(err)
	}
	if res.Status != RunCompleted {
		t.Fatalf("expected completed, got %s (err=%s)", res.Status, res.Error)
	}
	if len(runner.calls) != 1 || runner.calls[0].IntentID != "demo.run.status_query" || runner.calls[0].Slots["run_id"] != "run-42" {
		t.Fatalf("runner calls: %+v", runner.calls)
	}
	// 系统功能步产物落盘。
	sysOut := filepath.Join(res.WorkDir, "tasks", "01_researcher", "output.md")
	if data, err := os.ReadFile(sysOut); err != nil || !strings.Contains(string(data), "查询结果") {
		t.Fatalf("intent step deliverable missing: %v", err)
	}
}

func TestIntentStepWithoutRunnerFailsClosed(t *testing.T) {
	engine := newCatalogTestEngine(t, nil, testCatalog())
	res, err := engine.Run(context.Background(), Goal{Text: "做一次混合演示", HitlMode: HitlAuto}, RunOptions{})
	if err != nil {
		t.Fatal(err)
	}
	if res.Status != RunFailed || !strings.Contains(res.Error, "IntentRunner") {
		t.Fatalf("expected fail-closed runner error, got %+v", res)
	}
}

func TestIntentStepPlanValidationFailsClosed(t *testing.T) {
	// 目录缺席时，含 intent 步的蓝图在计划校验即被拒（不到执行层）。
	engine := newCatalogTestEngine(t, &stubRunner{text: "x"}, nil)
	res, err := engine.Run(context.Background(), Goal{Text: "做一次混合演示", HitlMode: HitlAuto}, RunOptions{})
	if err != nil {
		t.Fatal(err)
	}
	if res.Status != RunFailed || !strings.Contains(res.Error, "未装配意图目录") {
		t.Fatalf("expected validation failure, got %+v", res)
	}
}

func TestLLMPlannerPromptIncludesCatalog(t *testing.T) {
	p := NewLLMPlanner(nil, "m")
	input := PlanInput{
		Goal:          Goal{Text: "目标"},
		Registry:      NewRoleRegistry(),
		IntentCatalog: testCatalog(),
	}
	got := p.buildPrompt(input)
	for _, want := range []string{"系统能力目录", "demo.run.status_query", "提问建议：要查询哪个运行"} {
		if !strings.Contains(got, want) {
			t.Fatalf("prompt missing %q", want)
		}
	}
	if strings.Contains(NewLLMPlanner(nil, "m").buildPrompt(PlanInput{Goal: Goal{Text: "g"}, Registry: NewRoleRegistry()}), "系统能力目录") {
		t.Fatal("catalog must be absent when not configured")
	}
}

func TestLeaderPromptIncludesCatalog(t *testing.T) {
	md := leaderPrompt(nil, testCatalog().Markdown)
	if !strings.Contains(md, "系统能力目录") || !strings.Contains(md, "demo.run.status_query") {
		t.Fatalf("leader prompt missing catalog:\n%s", md)
	}
	if strings.Contains(leaderPrompt(nil, ""), "系统能力目录") {
		t.Fatal("empty catalog must not add section")
	}
}