package console_test

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

	"git.golem15.com/golem15/summercms/modules/bonfire"
	"git.golem15.com/jakub/sm-bm-plugin/console"
	"gorm.io/gorm"
)

func TestSeedCommandShape(t *testing.T) {
	cmd := console.SeedCommand(nil)
	if cmd.Name != "bm:seed" || cmd.Description == "" {
		t.Errorf("command = %q %q", cmd.Name, cmd.Description)
	}
	if len(cmd.Args) != 1 || cmd.Args[0].Name != "file" || !cmd.Args[0].Required {
		t.Errorf("Args = %+v, want one required file argument", cmd.Args)
	}
}

func TestSeedCommandChecksTheFileBeforeTheDatabase(t *testing.T) {
	called := false
	withDB := func(ctx context.Context, fn func(*gorm.DB) error) error {
		called = true
		return errors.New("no database in this test")
	}
	cmds := []bonfire.Command{console.SeedCommand(withDB)}
	dir := t.TempDir()
	invalid := filepath.Join(dir, "invalid.json")
	if err := os.WriteFile(invalid, []byte(`{"readings": [{"course": "ghost", "title": "X"}]}`), 0o644); err != nil {
		t.Fatal(err)
	}
	broken := filepath.Join(dir, "broken.json")
	if err := os.WriteFile(broken, []byte(`{"courses": [`), 0o644); err != nil {
		t.Fatal(err)
	}
	var out bytes.Buffer
	for _, args := range [][]string{nil, {filepath.Join(dir, "missing.json")}, {broken}, {invalid}} {
		if err := bonfire.Call(context.Background(), cmds, "bm:seed", args, &out); err == nil {
			t.Errorf("bm:seed %v succeeded", args)
		}
	}
	err := bonfire.Call(context.Background(), cmds, "bm:seed", []string{invalid}, &out)
	if err == nil || !strings.Contains(err.Error(), "nothing was written") || !strings.Contains(err.Error(), "ghost") {
		t.Errorf("invalid file error = %v", err)
	}
	if called {
		t.Error("bm:seed reached the database with an invalid file")
	}

	out.Reset()
	err = bonfire.Call(context.Background(), cmds, "bm:seed", []string{"../testdata/seed.example.json", "--dry-run", "--prune"}, &out)
	if !called || err == nil || !strings.Contains(out.String(), "3 courses") {
		t.Errorf("dry run called=%v err=%v output %q, want the validation line and the withDB error", called, err, out.String())
	}
	called = false

	err = bonfire.Call(context.Background(), cmds, "bm:seed", []string{"../testdata/seed.example.json"}, &out)
	if !called || err == nil {
		t.Errorf("valid file: called=%v err=%v, want the withDB error", called, err)
	}
}