package store_test

import (
	"context"
	"testing"
	"time"

	"vetting/internal/model"
	"vetting/internal/store"
)

// TestSubStepsUpsertAndList covers the two-phase life cycle the agent
// is meant to exercise: an initial "started" upsert with state=running
// and started_at set, then a terminal upsert that flips state to passed
// and fills completed_at without clobbering started_at. Ordering falls
// out of the (stage_name, ordinal) index — ListForRun must return rows
// in that deterministic order even when they were inserted out of order.
func TestSubStepsUpsertAndList(t *testing.T) {
	runs := newDB(t)
	_, runID := seedRun(t, runs)
	ss := &store.SubSteps{DB: runs.DB}
	ctx := context.Background()

	start := time.Date(2026, 4, 18, 12, 0, 0, 0, time.UTC)
	end := start.Add(3 * time.Minute)

	// Insert CPUStress ordinals out of order to prove ListForRun orders
	// by (stage, ordinal) rather than insertion time.
	if err := ss.Upsert(ctx, model.SubStep{
		RunID: runID, StageName: "CPUStress", Ordinal: 1,
		Name: "Memory pass", State: model.StageRunning, StartedAt: &start,
	}); err != nil {
		t.Fatalf("upsert CPUStress/1 running: %v", err)
	}
	if err := ss.Upsert(ctx, model.SubStep{
		RunID: runID, StageName: "CPUStress", Ordinal: 0,
		Name: "CPU pass", State: model.StagePassed, StartedAt: &start, CompletedAt: &end,
		SummaryJSON: `{"elapsed_secs":180}`,
	}); err != nil {
		t.Fatalf("upsert CPUStress/0 passed: %v", err)
	}
	// Terminal update for ordinal 1 — only completed_at + state; started_at
	// intentionally omitted so COALESCE preserves the original value.
	if err := ss.Upsert(ctx, model.SubStep{
		RunID: runID, StageName: "CPUStress", Ordinal: 1,
		Name: "Memory pass", State: model.StagePassed, CompletedAt: &end,
	}); err != nil {
		t.Fatalf("upsert CPUStress/1 passed: %v", err)
	}

	list, err := ss.ListForRun(ctx, runID)
	if err != nil {
		t.Fatalf("ListForRun: %v", err)
	}
	if len(list) != 2 {
		t.Fatalf("got %d rows, want 2", len(list))
	}
	if list[0].Name != "CPU pass" || list[1].Name != "Memory pass" {
		t.Fatalf("order: %+v", list)
	}
	if list[1].State != model.StagePassed {
		t.Fatalf("memory pass state = %q, want passed", list[1].State)
	}
	if list[1].StartedAt == nil {
		t.Fatalf("memory pass started_at was wiped by terminal upsert")
	}
	if !list[1].StartedAt.Equal(start) {
		t.Fatalf("started_at = %v, want %v", list[1].StartedAt, start)
	}
	if list[0].SummaryJSON != `{"elapsed_secs":180}` {
		t.Fatalf("CPU pass summary = %q, want {\"elapsed_secs\":180}", list[0].SummaryJSON)
	}

	// ListForStage scopes to a single stage.
	only, err := ss.ListForStage(ctx, runID, "CPUStress")
	if err != nil {
		t.Fatalf("ListForStage: %v", err)
	}
	if len(only) != 2 {
		t.Fatalf("ListForStage CPUStress: got %d, want 2", len(only))
	}
	other, err := ss.ListForStage(ctx, runID, "Storage")
	if err != nil {
		t.Fatalf("ListForStage Storage: %v", err)
	}
	if len(other) != 0 {
		t.Fatalf("ListForStage Storage should be empty, got %d", len(other))
	}
}

// TestSubStepsSummaryPreserveOnDefault verifies the intentional special-
// case: when the second upsert supplies the default empty-object summary
// ('{}'), the prior non-default summary is kept. This lets a "complete"
// call that only carries timing update the row without wiping the rich
// summary the "start" call persisted.
func TestSubStepsSummaryPreserveOnDefault(t *testing.T) {
	runs := newDB(t)
	_, runID := seedRun(t, runs)
	ss := &store.SubSteps{DB: runs.DB}
	ctx := context.Background()

	if err := ss.Upsert(ctx, model.SubStep{
		RunID: runID, StageName: "SMART", Ordinal: 0,
		Name: "smartctl /dev/sda", State: model.StageRunning,
		SummaryJSON: `{"device":"/dev/sda"}`,
	}); err != nil {
		t.Fatalf("first upsert: %v", err)
	}
	// Terminal with empty summary — should not blow away the device field.
	if err := ss.Upsert(ctx, model.SubStep{
		RunID: runID, StageName: "SMART", Ordinal: 0,
		Name: "smartctl /dev/sda", State: model.StagePassed,
	}); err != nil {
		t.Fatalf("terminal upsert: %v", err)
	}
	got, err := ss.Get(ctx, runID, "SMART", 0)
	if err != nil {
		t.Fatalf("Get: %v", err)
	}
	if got.SummaryJSON != `{"device":"/dev/sda"}` {
		t.Fatalf("summary wiped: %q", got.SummaryJSON)
	}
	if got.State != model.StagePassed {
		t.Fatalf("state = %q, want passed", got.State)
	}
}