package console

import (
	"encoding/json"
	"os"
	"strings"
	"testing"
)

func TestSigninCopyMatchesApproved(t *testing.T) {
	raw, err := os.ReadFile("../../docs/superpowers/specs/2026-10-21-console-email-signin-copy-approved.json")
	if err != nil {
		t.Fatal(err)
	}
	var approved struct {
		Action  string `json:"action"`
		Strings []struct {
			ID   string `json:"id"`
			Text string `json:"text"`
		} `json:"strings"`
	}
	if err := json.Unmarshal(raw, &approved); err != nil {
		t.Fatal(err)
	}
	if approved.Action != "approve" {
		t.Fatalf("action = %q, want approve", approved.Action)
	}
	seen := map[string]bool{}
	for _, s := range approved.Strings {
		seen[s.ID] = true
		got, ok := signinCopy[s.ID]
		if !ok {
			t.Errorf("approved id %q missing from signinCopy", s.ID)
			continue
		}
		if got != s.Text {
			t.Errorf("%s = %q, approved %q", s.ID, got, s.Text)
		}
	}
	for id := range signinCopy {
		if !seen[id] {
			t.Errorf("signinCopy has %q, which is not in the approved copy", id)
		}
	}
	if len(signinCopy) != len(approved.Strings) {
		t.Errorf("signinCopy has %d strings, approved copy has %d", len(signinCopy), len(approved.Strings))
	}
}

func TestCopyTextFillsPlaceholders(t *testing.T) {
	for id, text := range signinCopy {
		if got := copyText(id); got != text {
			t.Errorf("copyText(%q) with no arguments changed the text", id)
		}
	}
	for _, tc := range []struct {
		id   string
		kv   []string
		want string
	}{
		{"check.sent", []string{"address", "bob@example.com"},
			"A sign-in link and code are on their way to bob@example.com. Both work once, for 15 minutes."},
		{"email.signin.body", []string{"console", "Example Console", "address", "bob@example.com",
			"link", "https://console.example.com/auth/email/link?t=TOKEN", "code", "123456"},
			"Someone, hopefully you, asked to sign in to Example Console as bob@example.com.\n\n" +
				"Open this link to sign in:\n\nhttps://console.example.com/auth/email/link?t=TOKEN\n\n" +
				"Or type this code on the page that's waiting: 123456\n\n" +
				"The link and the code work once, for 15 minutes. If this wasn't you, ignore this email. Nothing happens without the link or the code."},
	} {
		got := copyText(tc.id, tc.kv...)
		if got != tc.want {
			t.Errorf("copyText(%q, %q) = %q, want %q", tc.id, tc.kv, got, tc.want)
		}
		if strings.ContainsAny(got, "{}") {
			t.Errorf("copyText(%q) left a placeholder: %q", tc.id, got)
		}
	}
	defer func() {
		if recover() == nil {
			t.Error("copyText of an unknown id did not panic")
		}
	}()
	copyText("no.such.id")
}