package main

import (
	"bytes"
	"context"
	"encoding/json"
	"log/slog"
	"strings"
	"testing"

	"git.k6n.net/mats/go-cart-actor/pkg/flow"
	"git.k6n.net/mats/go-cart-actor/pkg/order"
	messages "git.k6n.net/mats/go-cart-actor/proto/order"
)

func TestProjectFulfillmentIntegrationHookIsRegistered(t *testing.T) {
	s := testServer(t)
	if !strings.Contains(strings.Join(s.freg.Capabilities().Hooks, ","), "project_fulfillment_integration") {
		t.Fatalf("hooks = %v, want project_fulfillment_integration", s.freg.Capabilities().Hooks)
	}
}

func TestProjectFulfillmentIntegrationLogs(t *testing.T) {
	s := testServer(t)
	var logs bytes.Buffer
	logger := slog.New(slog.NewJSONHandler(&logs, nil))

	provider := order.NewPassthroughProvider("legacy", "ref", 25000)
	freg := buildFlowRegistry(s.applier, provider, nil, nil, nil, nil, logger)
	engine := flow.NewEngine(freg, logger)

	st := flow.NewState(801, logger)
	po := orderTestPlaceMsg()
	po.CustomerEmail = "dropship@example.com"
	st.Vars[order.PlaceOrderVar] = po

	def, err := order.EmbeddedFlow("place-and-pay")
	if err != nil {
		t.Fatal(err)
	}
	if _, err := engine.Run(context.Background(), def, st); err != nil {
		t.Fatal(err)
	}

	ship := &flow.Definition{Name: "ship", Steps: []flow.Step{{
		Name:   "fulfill",
		Action: "create_fulfillment",
		Params: json.RawMessage(`{"carrier":"dropshipper","trackingNumber":"DS-123","lines":[{"reference":"l1","quantity":1}]}`),
		Hooks: flow.Hooks{After: []flow.HookRef{{
			Type:   "project_fulfillment_integration",
			Params: json.RawMessage(`{"integration":"dropship-test","target":"erp-sandbox","dropship":true}`),
		}}},
	}}}
	if _, err := engine.Run(context.Background(), ship, flow.NewState(801, logger)); err != nil {
		t.Fatal(err)
	}

	got := logs.String()
	for _, want := range []string{
		`"msg":"project fulfillment integration"`,
		`"integration":"dropship-test"`,
		`"target":"erp-sandbox"`,
		`"dropship":true`,
		`"trackingNumber":"DS-123"`,
	} {
		if !strings.Contains(got, want) {
			t.Fatalf("log output missing %s: %s", want, got)
		}
	}
}

func orderTestPlaceMsg() *messages.PlaceOrder {
	return &messages.PlaceOrder{
		OrderReference: "ref-1",
		CartId:         "cart-1",
		Currency:       "SEK",
		Country:        "SE",
		CustomerName:   "Dropship Customer",
		TotalAmount:    25000,
		TotalTax:       5000,
		PlacedAtMs:     1718877600000,
		Lines: []*messages.OrderLine{
			{Reference: "l1", Sku: "ABC", Name: "Widget", Quantity: 2, UnitPrice: 10000, TaxRate: 25, TotalAmount: 20000},
			{Reference: "l2", Sku: "DEF", Name: "Gizmo", Quantity: 1, UnitPrice: 5000, TaxRate: 25, TotalAmount: 5000},
		},
	}
}