package cli

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

	"git.avsdev.uk/Go/job-search/internal/config"
	"git.avsdev.uk/Go/job-search/internal/store"
)

// No database.file means no store, reported as ErrNoDatabase.
func TestOpenConfiguredStoreNone(t *testing.T) {
	opportunityStore, err := OpenConfiguredStore(
		context.Background(), &config.JobSearchConfig{},
	)
	if opportunityStore != nil || !errors.Is(err, ErrNoDatabase) {
		t.Errorf(
			"OpenConfiguredStore = %v, %v; want nil, ErrNoDatabase",
			opportunityStore, err,
		)
	}
}

// A missing database isn't created; one that needs migrating says how to
// migrate it; a migrated one opens.
func TestOpenConfiguredStore(t *testing.T) {
	conf := &config.JobSearchConfig{}
	conf.Database.File = filepath.Join(t.TempDir(), "jobsearch.db")

	_, err := OpenConfiguredStore(context.Background(), conf)
	if err == nil || !strings.Contains(err.Error(), "migrate up --create") {
		t.Fatalf("missing: err = %v; want a hint to create it", err)
	}
	_, statErr := os.Stat(conf.Database.File)
	if !errors.Is(statErr, os.ErrNotExist) {
		t.Fatal("the missing database file was created")
	}

	// An empty file is a database at version 0.
	if err := os.WriteFile(conf.Database.File, nil, 0o600); err != nil {
		t.Fatal(err)
	}
	_, err = OpenConfiguredStore(context.Background(), conf)
	if !errors.Is(err, store.ErrNeedsMigration) ||
		!strings.Contains(err.Error(), "run `job-search migrate`") {
		t.Fatalf("unmigrated: err = %v; want ErrNeedsMigration and a hint", err)
	}

	migrated, err := store.Open(
		context.Background(), conf.Database.File, store.WithAutoMigrate(),
	)
	if err != nil {
		t.Fatal(err)
	}
	migrated.Close()

	opportunityStore, err := OpenConfiguredStore(context.Background(), conf)
	if err != nil {
		t.Fatalf("migrated: err = %v", err)
	}
	opportunityStore.Close()
}