package restic

import (
	"context"
	"fmt"
	"os"
	"path/filepath"
	"strings"
	"testing"

	"github.com/backupper-unraid/backupper/internal/model"
)

type fakeSecrets map[string]string

func (s fakeSecrets) Get(id string) (string, error) { return s[id], nil }

func TestBackupUsesPasswordFileAndStructuredArguments(t *testing.T) {
	dir := t.TempDir()
	argsPath := filepath.Join(dir, "args")
	passwordPath := filepath.Join(dir, "password")
	script := filepath.Join(dir, "restic")
	body := fmt.Sprintf("#!/bin/sh\nprintf '%%s\\n' \"$@\" > '%s'\ncat \"$RESTIC_PASSWORD_FILE\" > '%s'\nprintf '%%s\\n' '{\"message_type\":\"summary\",\"snapshot_id\":\"abc123\",\"data_added\":42,\"files_new\":3,\"total_bytes_processed\":1024,\"total_files_processed\":12}'\n", argsPath, passwordPath)
	if err := os.WriteFile(script, []byte(body), 0700); err != nil {
		t.Fatal(err)
	}
	runner := &Runner{Binary: script, RuntimeDir: dir, Secrets: fakeSecrets{"password": "top-secret"}}
	repo := model.Repository{Type: model.RepositoryLocal, Location: "/repo path", PasswordRef: "password"}
	job := model.Job{ID: "job", Compression: "auto", Tags: []string{"daily"}, Excludes: []string{"*.tmp"}}
	summary, err := runner.Backup(context.Background(), repo, job, []string{"/source path"})
	if err != nil {
		t.Fatal(err)
	}
	if summary.SnapshotID != "abc123" || summary.DataAdded != 42 || summary.TotalBytesProcessed != 1024 || summary.TotalFilesProcessed != 12 {
		t.Fatalf("unexpected summary: %+v", summary)
	}
	args, _ := os.ReadFile(argsPath)
	for _, expected := range []string{"/repo path", "backup", "--json", "/source path"} {
		if !strings.Contains(string(args), expected) {
			t.Fatalf("arguments missing %q: %s", expected, args)
		}
	}
	password, _ := os.ReadFile(passwordPath)
	if string(password) != "top-secret" {
		t.Fatal("password file was not provided")
	}
}

func TestForgetUsesAgeAndCalendarRetention(t *testing.T) {
	dir := t.TempDir()
	argsPath := filepath.Join(dir, "args")
	script := filepath.Join(dir, "restic")
	body := fmt.Sprintf("#!/bin/sh\nprintf '%%s\\n' \"$@\" > '%s'\n", argsPath)
	if err := os.WriteFile(script, []byte(body), 0700); err != nil {
		t.Fatal(err)
	}
	runner := &Runner{Binary: script, RuntimeDir: dir, Secrets: fakeSecrets{"password": "secret"}}
	repo := model.Repository{Type: model.RepositoryLocal, Location: "/repo", PasswordRef: "password"}
	job := model.Job{ID: "job", Retention: model.Retention{KeepWithinDays: 30, Weekly: 4, Monthly: 12}}
	if err := runner.Forget(context.Background(), repo, job); err != nil {
		t.Fatal(err)
	}
	args, _ := os.ReadFile(argsPath)
	for _, expected := range []string{"--keep-within", "30d", "--keep-weekly", "4", "--keep-monthly", "12"} {
		if !strings.Contains(string(args), expected) {
			t.Fatalf("retention arguments missing %q: %s", expected, args)
		}
	}
	if strings.Contains(string(args), "--keep-daily") {
		t.Fatalf("disabled daily retention was included: %s", args)
	}
}