package console

import (
	"encoding/json"
	"fmt"
	"os"
	"reflect"
	"strconv"
	"strings"
	"testing"
)

func TestRegionCopyHasNoEmDashesAndRendersItsVerbs(t *testing.T) {
	v := reflect.ValueOf(regionCopy)
	for i := 0; i < v.NumField(); i++ {
		s := v.Field(i).String()
		if s == "" || strings.Contains(s, "—") {
			t.Errorf("%s = %q: empty or has an em dash", v.Type().Field(i).Name, s)
		}
	}
	for _, s := range []string{
		fmt.Sprintf(regionCopy.AutoOption, "P"),
		fmt.Sprintf(regionCopy.StartsIn, "P"),
		fmt.Sprintf(regionCopy.CantStart, "P"),
		fmt.Sprintf(regionCopy.AuditCreated, "blog", "P"),
	} {
		if strings.Contains(s, "%!") {
			t.Errorf("bad verb: %q", s)
		}
	}
}

// TestRegionCopyMatchesTheApprovedRecord holds every string to the copy
// record byte for byte, and to the quoted literal in the source, so a short
// text such as "Region" cannot pass by matching part of an identifier.
func TestRegionCopyMatchesTheApprovedRecord(t *testing.T) {
	raw, err := os.ReadFile("../../docs/superpowers/plans/2026-10-02-nearest-region-copy.json")
	if err != nil {
		t.Fatal(err)
	}
	var rec struct {
		Entries []struct {
			ID   string `json:"id"`
			Text string `json:"text"`
			Link string `json:"link"`
		} `json:"entries"`
	}
	if err := json.Unmarshal(raw, &rec); err != nil {
		t.Fatal(err)
	}
	src, err := os.ReadFile("regioncopy.go")
	if err != nil {
		t.Fatal(err)
	}
	byID := map[string]string{}
	links := map[string]string{}
	for _, e := range rec.Entries {
		byID[e.ID] = e.Text
		links[e.ID] = e.Link
	}
	for id, got := range map[string]string{
		"C1":  regionCopy.PickerLabel,
		"C2":  regionCopy.PickerHelp,
		"C3":  regionCopy.AutoOption,
		"C5":  regionCopy.Unavailable,
		"C7":  regionCopy.StartsIn,
		"C8":  regionCopy.CantStart,
		"C21": regionCopy.AuditCreated,
		"C24": regionCopy.Attribution,
	} {
		want, ok := byID[id]
		if !ok {
			t.Errorf("%s: not in the record", id)
			continue
		}
		if got != want {
			t.Errorf("%s = %q, record has %q", id, got, want)
		}
		if !strings.Contains(string(src), strconv.Quote(want)) {
			t.Errorf("%s: regioncopy.go has no literal %s", id, strconv.Quote(want))
		}
	}
	// C24 is DB-IP's required credit; the licence wants it linked.
	if links["C24"] == "" {
		t.Fatal("C24: the record carries no link")
	}
	if regionCopy.AttributionURL != links["C24"] || attributionURL != links["C24"] {
		t.Errorf("attribution URL = %q / %q, record has %q", regionCopy.AttributionURL, attributionURL, links["C24"])
	}
	if regionCopy.Attribution != "IP Geolocation by DB-IP" {
		t.Errorf("Attribution = %q", regionCopy.Attribution)
	}
}