package localstore_test

import (
	"context"
	"errors"
	"testing"

	"git.nianxx.cn/wangxuming/NianAIGC/backend/internal/billing"
	"git.nianxx.cn/wangxuming/NianAIGC/backend/internal/localstore"
)

func TestBulkPriceUpdateIsScopedAtomicAndSurvivesSingleEditAndReseed(t *testing.T) {
	ctx := context.Background()
	store := localstore.New()
	defaults := []billing.PriceRule{
		{ID: "a", Provider: "a", Capability: "image.generate", Unit: billing.UnitImage, StandardUnitPriceFen: 20, MarkupMultiplier: 1.2, Enabled: true, Dimensions: []billing.ParameterDimension{{Key: "quality", Tiers: []billing.ParameterTier{{Value: "low", StandardFactor: 1, MarkupMultiplier: 1.2, Enabled: true}, {Value: "high", StandardFactor: 2, MarkupMultiplier: 1.2, Enabled: false}}}}},
		{ID: "b", Provider: "b", Capability: "image.generate", Unit: billing.UnitImage, StandardUnitPriceFen: 30, MarkupMultiplier: 1.2, Enabled: false, Dimensions: []billing.ParameterDimension{{Key: "quality", Tiers: []billing.ParameterTier{{Value: "low", StandardFactor: 1, MarkupMultiplier: 1.2, Enabled: true}}}}},
		{ID: "c", Provider: "c", Capability: "image.generate", Unit: billing.UnitImage, StandardUnitPriceFen: 40, MarkupMultiplier: 1.2, Enabled: true},
	}
	if err := store.SeedBillingPriceRules(ctx, defaults); err != nil {
		t.Fatal(err)
	}
	if _, err := store.UpdateBillingPriceRules(ctx, billing.BulkPricePatch{RuleIDs: []string{"a", "missing"}, MarkupMultiplier: 2}); !errors.Is(err, billing.ErrPriceNotFound) {
		t.Fatalf("missing ID error = %v", err)
	}
	if _, err := store.UpdateBillingPriceRules(ctx, billing.BulkPricePatch{MarkupMultiplier: 2}); !errors.Is(err, billing.ErrPriceNotFound) {
		t.Fatalf("empty ID error = %v", err)
	}
	before, _ := store.GetBillingPriceRule(ctx, "a")
	if before.MarkupMultiplier != 1.2 || before.Dimensions[0].Tiers[0].MarkupMultiplier != 1.2 {
		t.Fatalf("partial write on missing ID: %+v", before)
	}
	updated, err := store.UpdateBillingPriceRules(ctx, billing.BulkPricePatch{RuleIDs: []string{"a", "b"}, MarkupMultiplier: 1.8})
	if err != nil || len(updated) != 2 {
		t.Fatalf("bulk update = %+v, %v", updated, err)
	}
	for _, id := range []string{"a", "b"} {
		rule, _ := store.GetBillingPriceRule(ctx, id)
		if rule.MarkupMultiplier != 1.8 {
			t.Fatalf("%s rule markup = %g", id, rule.MarkupMultiplier)
		}
		for _, dimension := range rule.Dimensions {
			for _, tier := range dimension.Tiers {
				if tier.MarkupMultiplier != 1.8 {
					t.Fatalf("%s tier markup = %g", id, tier.MarkupMultiplier)
				}
			}
		}
	}
	a, _ := store.GetBillingPriceRule(ctx, "a")
	if a.StandardUnitPriceFen != 20 || a.Dimensions[0].Tiers[1].Enabled || a.Dimensions[0].Tiers[1].StandardFactor != 2 {
		t.Fatalf("bulk update changed non-markup fields: %+v", a)
	}
	c, _ := store.GetBillingPriceRule(ctx, "c")
	if c.MarkupMultiplier != 1.2 {
		t.Fatalf("unselected rule changed: %+v", c)
	}
	if _, err := store.UpdateBillingPriceRule(ctx, "a", billing.PricePatch{DimensionKey: "quality", TierValue: "low", MarkupMultiplier: 2.3}); err != nil {
		t.Fatal(err)
	}
	if err := store.SeedBillingPriceRules(ctx, defaults); err != nil {
		t.Fatal(err)
	}
	a, _ = store.GetBillingPriceRule(ctx, "a")
	b, _ := store.GetBillingPriceRule(ctx, "b")
	if a.MarkupMultiplier != 1.8 || a.Dimensions[0].Tiers[0].MarkupMultiplier != 2.3 || a.Dimensions[0].Tiers[1].MarkupMultiplier != 1.8 || b.MarkupMultiplier != 1.8 || b.Dimensions[0].Tiers[0].MarkupMultiplier != 1.8 {
		t.Fatalf("single edit or bulk update lost after reseed: a=%+v b=%+v", a, b)
	}
}