package web

import (
	"net/http"
	"strings"
	"testing"

	"sourcecraft.dev/bigbes/sr-ht-dolt/browse"
	"sourcecraft.dev/bigbes/sr-ht-dolt/core"
)

// The grouping itself is tested in the beads package; what is left here is the
// pairing with the Beads tab and that milestones.html renders the rollup.

// milestoneFixture: six issues across two milestones. m1 carries the full
// hierarchy — a milestone-typed head, an epic with one (closed) subtask, and a
// loose bug; m2 has a single loose feature; one issue has no milestone label.
func milestoneFixture() *fakeSession {
	issues := &browse.RowPage{
		Columns: []string{"id", "title", "status", "priority", "issue_type", "assignee"},
		Rows: [][]string{
			{"i-m", "Mike", "open", "0", "milestone", ""},
			{"i-e", "Echo", "open", "1", "epic", ""},
			{"i-a", "Alpha", "closed", "1", "task", "alice"}, // subtask of i-e
			{"i-b", "Bravo", "open", "0", "bug", "bob"},
			{"i-c", "Charlie", "open", "2", "feature", ""},
			{"i-d", "Delta", "open", "1", "task", ""}, // no milestone
		},
		Total: 6,
	}
	labels := &browse.RowPage{
		Columns: []string{"issue_id", "label"},
		Rows: [][]string{
			{"i-m", "milestone:m1"},
			{"i-e", "milestone:m1"},
			{"i-a", "milestone:m1"},
			{"i-b", "milestone:m1"},
			{"i-c", "milestone:m2"},
			{"i-b", "backend"}, // non-milestone label ignored by grouping
		},
		Total: 6,
	}
	deps := &browse.RowPage{
		Columns: []string{"issue_id", "depends_on_issue_id", "type"},
		Rows: [][]string{
			{"i-a", "i-e", "parent-child"},
			{"i-b", "i-a", "blocks"}, // non-hierarchy edge ignored by nesting
		},
		Total: 2,
	}
	statuses := &browse.RowPage{
		Columns: []string{"name", "category"},
		Rows:    [][]string{{"open", "open"}, {"closed", "closed"}},
		Total:   2,
	}
	return &fakeSession{
		branches: []browse.Branch{{Name: "main", Head: "abcdef1234567890"}},
		tables:   beadsTables(),
		rowsByTable: map[string]*browse.RowPage{
			"issues":          issues,
			"labels":          labels,
			"dependencies":    deps,
			"custom_statuses": statuses,
		},
	}
}

func TestMilestonesApplies(t *testing.T) {
	// The milestone tab appears exactly where the beads tab does.
	if (&milestonesView{}).Applies(beadsTables()) != (&beadsView{}).Applies(beadsTables()) {
		t.Fatalf("milestones Applies should mirror beads Applies")
	}
	if (&milestonesView{}).Applies([]browse.TableInfo{{Name: "widgets"}}) {
		t.Fatalf("milestones should not apply to an unrelated schema")
	}
}

func TestMilestonesRender(t *testing.T) {
	h := newHarness(t)
	h.store.add(&core.Repo{Name: "db", OwnerID: 1, OwnerName: "alice", Path: "/d", Visibility: core.VisibilityPublic})
	h.browse.sess = milestoneFixture()
	setViews(t, h, &beadsView{}, &milestonesView{})

	rec := h.do("GET", "/~alice/db/view/milestones", nil, nil)
	if rec.Code != http.StatusOK {
		t.Fatalf("milestones view: got %d; body=%s", rec.Code, rec.Body.String())
	}
	body := rec.Body.String()
	for _, want := range []string{
		"· milestones",         // page heading
		"ms-title\">m1<",              // milestone name
		"1</b>/4 done",                // rollup counts
		"ms-issue head",               // the milestone-typed issue leads the list
		"ms-issue epic",               // the epic row
		"ms-issue child done",         // its subtask, nested and closed
		`class="r-sub">1/1<`,          // the epic's subtask rollup
		"Charlie",                     // an issue under m2
		"carry no milestone",          // unlabeled footnote
		`view/milestones">Milestones`, // the tab link
		"nav-link active",             // the active tab marker
	} {
		if !strings.Contains(body, want) {
			t.Errorf("milestones render missing %q", want)
		}
	}
}