package mail

import (
	"strings"
	"testing"
	"time"
)

func sampleNotice() DisputeNotice {
	return DisputeNotice{
		AccountName:  "Smith & Sons",
		DisputeID:    "dsp_123",
		Reason:       "Breach of the terms of service",
		CloudNames:   []string{"smith-prod"},
		SelfHosted:   []SelfHostedNotice{{Name: "smith-dc", LicenceExpires: time.Date(2026, 11, 2, 0, 0, 0, 0, time.UTC)}},
		DisputeEmail: "disputes@vantage.example",
		DisputeBy:    time.Date(2026, 9, 17, 10, 0, 0, 0, time.UTC),
	}
}

var disputeTemplates = []string{"accountlocked", "disputereminder", "accountterminated", "accountrestored"}

func TestDisputeTemplatesRender(t *testing.T) {
	for _, name := range disputeTemplates {
		t.Run(name, func(t *testing.T) {
			m, err := render(name, sampleNotice())
			if err != nil {
				t.Fatalf("render: %v", err)
			}
			if !strings.Contains(m.Subject, "Smith & Sons") {
				t.Errorf("subject %q does not name the account verbatim", m.Subject)
			}
			for label, body := range map[string]string{"text": m.Text, "html": m.HTML} {
				if strings.Contains(body, "<no value>") {
					t.Errorf("%s body has an unfilled field", label)
				}
				if strings.Contains(body, "—") {
					t.Errorf("%s body contains an em dash", label)
				}
			}
		})
	}
}

func TestDisputeRouteIsStated(t *testing.T) {
	for _, name := range []string{"accountlocked", "disputereminder"} {
		m, err := render(name, sampleNotice())
		if err != nil {
			t.Fatalf("render %s: %v", name, err)
		}
		for _, want := range []string{"disputes@vantage.example", "dsp_123", "17 September 2026"} {
			if !strings.Contains(m.Text, want) {
				t.Errorf("%s text is missing %q", name, want)
			}
		}
	}
}

func TestInstanceRows(t *testing.T) {
	rows := sampleNotice().InstanceRows()
	if len(rows) != 2 {
		t.Fatalf("got %d rows, want 2", len(rows))
	}
	if rows[0]["v"] != "smith-prod" {
		t.Errorf("cloud row = %v", rows[0])
	}
	if v, _ := rows[1]["v"].(string); !strings.Contains(v, "licence ends 2 November 2026") {
		t.Errorf("self-hosted row = %v", rows[1])
	}
}