package app

import (
	"context"
	"net/http"
	"path/filepath"
	"testing"
)

func TestAPIResolveRouteReturnsSelectedRoute(t *testing.T) {
	handler := NewAPIHandler("secret-token", ActionSet{
		ResolveRoute: func(_ context.Context, req ResolveRouteRequest) (ResolveRouteInfo, error) {
			if req.LogicalGroupID != "gpt-shared" {
				t.Fatalf("LogicalGroupID = %q, want gpt-shared", req.LogicalGroupID)
			}
			return ResolveRouteInfo{
				RequestID:      "req-1",
				Backend:        "memory",
				LogicalGroupID: req.LogicalGroupID,
				PublicModel:    req.PublicModel,
				StickyKey:      "lg:gpt-shared:m:gpt-5.4:conv:conv-1",
				StickyHit:      false,
				StickyAction:   "bind",
				RouteID:        "asxs",
				ShadowGroupID:  "gpt-shared__asxs",
				ShadowHostID:   "remote43",
				ShadowModel:    "gpt-5.4",
			}, nil
		},
	})

	request := httptestRequest(t, http.MethodPost, "/api/routing/resolve", map[string]any{
		"logical_group_id": "gpt-shared",
		"public_model":     "gpt-5.4",
		"scope":            "conversation",
		"subject_id":       "conv-1",
		"sync":             true,
	}, "secret-token")
	response := httptestRecorder(handler, request)
	assertStatusCode(t, response, http.StatusOK)
	assertJSONContains(t, response.Body().Bytes(), "resolve.route_id", "asxs")
	assertJSONContains(t, response.Body().Bytes(), "resolve.sticky_action", "bind")
}

func TestNewActionSetResolveRouteFlow(t *testing.T) {
	dsn := "file:" + filepath.ToSlash(filepath.Join(t.TempDir(), "route-resolve.db")) + "?_busy_timeout=5000"
	actions := NewActionSet(dsn)
	ctx := context.Background()

	_, err := actions.CreateLogicalGroup(ctx, CreateLogicalGroupRequest{
		LogicalGroupID:         "gpt-shared",
		DisplayName:            "GPT Shared",
		Status:                 "active",
		RoutePolicy:            "priority",
		StickyMode:             "conversation_preferred",
		ConversationTTLSeconds: 1200,
		UserModelTTLSeconds:    600,
		FailoverThreshold:      2,
		CooldownSeconds:        300,
	})
	if err != nil {
		t.Fatalf("CreateLogicalGroup() error = %v", err)
	}
	if _, err := actions.CreateLogicalGroupModel(ctx, CreateLogicalGroupModelRequest{
		LogicalGroupID: "gpt-shared",
		PublicModel:    "gpt-5.4",
		Status:         "active",
	}); err != nil {
		t.Fatalf("CreateLogicalGroupModel() error = %v", err)
	}
	if _, err := actions.CreateLogicalGroupRoute(ctx, CreateLogicalGroupRouteRequest{
		LogicalGroupID:      "gpt-shared",
		RouteID:             "asxs",
		Name:                "ASXS",
		Status:              "active",
		Priority:            20,
		ShadowGroupID:       "gpt-shared__asxs",
		ShadowHostID:        "remote43",
		UpstreamBaseURLHint: "https://api.asxs.top/v1",
	}); err != nil {
		t.Fatalf("CreateLogicalGroupRoute(asxs) error = %v", err)
	}
	if _, err := actions.CreateLogicalGroupRouteModel(ctx, CreateLogicalGroupRouteModelRequest{
		LogicalGroupID: "gpt-shared",
		RouteID:        "asxs",
		PublicModel:    "gpt-5.4",
		ShadowModel:    "gpt-5.4-asxs",
		Status:         "active",
	}); err != nil {
		t.Fatalf("CreateLogicalGroupRouteModel(asxs) error = %v", err)
	}
	if _, err := actions.CreateLogicalGroupRoute(ctx, CreateLogicalGroupRouteRequest{
		LogicalGroupID:      "gpt-shared",
		RouteID:             "codex2api",
		Name:                "Codex2API",
		Status:              "active",
		Priority:            10,
		ShadowGroupID:       "gpt-shared__codex2api",
		ShadowHostID:        "remote43",
		UpstreamBaseURLHint: "https://www.codex2api.com/v1",
	}); err != nil {
		t.Fatalf("CreateLogicalGroupRoute(codex2api) error = %v", err)
	}
	if _, err := actions.CreateLogicalGroupRouteModel(ctx, CreateLogicalGroupRouteModelRequest{
		LogicalGroupID: "gpt-shared",
		RouteID:        "codex2api",
		PublicModel:    "gpt-5.4",
		ShadowModel:    "gpt-5.4",
		Status:         "active",
	}); err != nil {
		t.Fatalf("CreateLogicalGroupRouteModel(codex2api) error = %v", err)
	}

	first, err := actions.ResolveRoute(ctx, ResolveRouteRequest{
		RequestID:      "req-resolve-1",
		LogicalGroupID: "gpt-shared",
		PublicModel:    "gpt-5.4",
		Scope:          "conversation",
		SubjectID:      "conv-1",
		Sync:           true,
	})
	if err != nil {
		t.Fatalf("ResolveRoute(first) error = %v", err)
	}
	if first.RouteID != "codex2api" || first.StickyHit || first.StickyAction != "bind" {
		t.Fatalf("ResolveRoute(first) = %+v, want codex2api bind miss", first)
	}

	second, err := actions.ResolveRoute(ctx, ResolveRouteRequest{
		RequestID:      "req-resolve-2",
		LogicalGroupID: "gpt-shared",
		PublicModel:    "gpt-5.4",
		Scope:          "conversation",
		SubjectID:      "conv-1",
		Sync:           true,
	})
	if err != nil {
		t.Fatalf("ResolveRoute(second) error = %v", err)
	}
	if second.RouteID != "codex2api" || !second.StickyHit || second.StickyAction != "hit" {
		t.Fatalf("ResolveRoute(second) = %+v, want codex2api sticky hit", second)
	}

	sticky, err := actions.GetStickyBinding(ctx, GetStickyBindingRequest{
		Scope:          "conversation",
		LogicalGroupID: "gpt-shared",
		PublicModel:    "gpt-5.4",
		SubjectID:      "conv-1",
	})
	if err != nil {
		t.Fatalf("GetStickyBinding() error = %v", err)
	}
	if sticky.RouteID != "codex2api" {
		t.Fatalf("GetStickyBinding() = %+v, want route codex2api", sticky)
	}

	decisions, err := actions.ListRouteDecisionLogs(ctx, ListRouteDecisionLogsRequest{
		LogicalGroupID: "gpt-shared",
		StickyKey:      first.StickyKey,
		Limit:          10,
	})
	if err != nil {
		t.Fatalf("ListRouteDecisionLogs() error = %v", err)
	}
	if len(decisions) != 2 {
		t.Fatalf("ListRouteDecisionLogs() len = %d, want 2", len(decisions))
	}
	if !decisions[0].StickyHit || decisions[1].StickyHit {
		t.Fatalf("ListRouteDecisionLogs() = %+v, want latest hit then miss", decisions)
	}

	stickyAudits, err := actions.ListRouteStickyAudit(ctx, ListRouteStickyAuditRequest{
		StickyKey: first.StickyKey,
		Limit:     10,
	})
	if err != nil {
		t.Fatalf("ListRouteStickyAudit() error = %v", err)
	}
	if len(stickyAudits) != 2 {
		t.Fatalf("ListRouteStickyAudit() len = %d, want 2", len(stickyAudits))
	}
	if stickyAudits[0].Action != "hit" || stickyAudits[1].Action != "bind" {
		t.Fatalf("ListRouteStickyAudit() = %+v, want latest hit then bind", stickyAudits)
	}
}