package api_test

import (
	"context"
	"fmt"
	"net/http"
	"net/http/httptest"
	"path/filepath"
	"strings"
	"testing"

	"github.com/go-chi/chi/v5"

	"vetting/internal/api"
	"vetting/internal/db"
	"vetting/internal/events"
	"vetting/internal/model"
	"vetting/internal/orchestrator"
	"vetting/internal/store"
)

func setupDetail(t *testing.T) (*api.UI, *store.Hosts, *store.Runs) {
	t.Helper()
	conn, err := db.Open(filepath.Join(t.TempDir(), "vetting.db"))
	if err != nil {
		t.Fatalf("open db: %v", err)
	}
	t.Cleanup(func() { _ = conn.Close() })
	hosts := &store.Hosts{DB: conn}
	runs := &store.Runs{DB: conn}
	stages := &store.Stages{DB: conn}
	diffs := &store.SpecDiffs{DB: conn}
	arts := &store.Artifacts{DB: conn}
	hub := events.NewHub()
	runner := &orchestrator.Runner{Runs: runs, Hosts: hosts, Stages: stages, EventHub: hub}
	tiles := &api.TileEnricher{Runs: runs, Artifacts: arts, SpecDiffs: diffs}
	ui := &api.UI{
		Hosts:     hosts,
		Runs:      runs,
		Stages:    stages,
		SpecDiffs: diffs,
		Artifacts: arts,
		EventHub:  hub,
		Runner:    runner,
		Tiles:     tiles,
	}
	return ui, hosts, runs
}

func detailReq(id int64) *http.Request {
	req := httptest.NewRequest(http.MethodGet, fmt.Sprintf("/hosts/%d", id), nil)
	rctx := chi.NewRouteContext()
	rctx.URLParams.Add("id", fmt.Sprintf("%d", id))
	return req.WithContext(context.WithValue(req.Context(), chi.RouteCtxKey, rctx))
}

func TestHostDetail_OK(t *testing.T) {
	ui, hosts, runs := setupDetail(t)
	ctx := context.Background()
	id, err := hosts.Create(ctx, model.Host{
		Name:             "detail-host",
		MAC:              "aa:bb:cc:dd:ee:30",
		WoLBroadcastIP:   "10.0.0.255",
		WoLPort:          9,
		ExpectedSpecYAML: "memory:\n  total_gib: 16\n",
	})
	if err != nil {
		t.Fatalf("create host: %v", err)
	}
	runID, err := runs.Create(ctx, id, "deadbeef")
	if err != nil {
		t.Fatalf("create run: %v", err)
	}

	rr := httptest.NewRecorder()
	ui.HostDetail(rr, detailReq(id))
	if rr.Code != http.StatusOK {
		t.Fatalf("status = %d, body = %q", rr.Code, rr.Body.String())
	}
	body := rr.Body.String()
	if !strings.Contains(body, "detail-host") {
		t.Fatalf("body missing host name: %s", body)
	}
	wantPipelineID := fmt.Sprintf(`id="pipeline-%d"`, runID)
	if !strings.Contains(body, wantPipelineID) {
		t.Fatalf("body missing %s", wantPipelineID)
	}
	wantLogID := fmt.Sprintf(`id="log-%d"`, runID)
	if !strings.Contains(body, wantLogID) {
		t.Fatalf("body missing %s", wantLogID)
	}
}

func TestHostDetail_NeverRun(t *testing.T) {
	ui, hosts, _ := setupDetail(t)
	id, err := hosts.Create(context.Background(), model.Host{
		Name:             "never-run",
		MAC:              "aa:bb:cc:dd:ee:31",
		WoLBroadcastIP:   "10.0.0.255",
		WoLPort:          9,
		ExpectedSpecYAML: "memory:\n  total_gib: 8\n",
	})
	if err != nil {
		t.Fatalf("create host: %v", err)
	}
	rr := httptest.NewRecorder()
	ui.HostDetail(rr, detailReq(id))
	if rr.Code != http.StatusOK {
		t.Fatalf("status = %d, body = %q", rr.Code, rr.Body.String())
	}
	body := rr.Body.String()
	if !strings.Contains(body, "Start vetting") {
		t.Fatalf("never-run page missing Start vetting: %s", body)
	}
	// Ghost pipeline: all nodes rendered but none are running/failed/passed.
	if strings.Contains(body, "stage-dot-running") || strings.Contains(body, "stage-dot-failed") {
		t.Fatalf("ghost pipeline should have no running/failed dots: %s", body)
	}
	if !strings.Contains(body, "stage-dot-pending") {
		t.Fatalf("expected pending stage dots in ghost pipeline: %s", body)
	}
}

func TestHostDetail_UnknownID(t *testing.T) {
	ui, _, _ := setupDetail(t)
	rr := httptest.NewRecorder()
	ui.HostDetail(rr, detailReq(9999))
	if rr.Code != http.StatusNotFound {
		t.Fatalf("status = %d, want 404", rr.Code)
	}
}

func TestHostDetail_BadID(t *testing.T) {
	ui, _, _ := setupDetail(t)
	req := httptest.NewRequest(http.MethodGet, "/hosts/not-a-number", nil)
	rctx := chi.NewRouteContext()
	rctx.URLParams.Add("id", "not-a-number")
	req = req.WithContext(context.WithValue(req.Context(), chi.RouteCtxKey, rctx))
	rr := httptest.NewRecorder()
	ui.HostDetail(rr, req)
	if rr.Code != http.StatusBadRequest {
		t.Fatalf("status = %d, want 400", rr.Code)
	}
}