package service

import (
	"context"
	"fmt"

	"gitea.d3m0k1d.ru/d3m0k1d/HellreigN/backend/internal/repository"
)

type ScriptService struct {
	repo *repository.ScriptInterpreterRepo
}

func NewScriptService(repo *repository.ScriptInterpreterRepo) *ScriptService {
	return &ScriptService{repo: repo}
}

// ResolveCommand builds the full argv[] by prepending the interpreter's argv
// to the script text (as the last argument).
func (self *ScriptService) ResolveCommand(
	ctx context.Context,
	interpreterID int64,
	scriptText string,
) ([]string, error) {
	interpreter, err := self.repo.GetByID(ctx, interpreterID)
	if err != nil {
		return nil, err
	}

	if len(interpreter.Argv) == 0 {
		return nil, fmt.Errorf("interpreter %q has empty argv", interpreter.Name)
	}

	argv := make([]string, len(interpreter.Argv)+1)
	copy(argv, interpreter.Argv)
	argv[len(argv)-1] = scriptText
	return argv, nil
}

func (self *ScriptService) Create(
	ctx context.Context,
	in repository.ScriptInterpreterCreate,
) (*repository.ScriptInterpreter, error) {
	return self.repo.Create(ctx, in)
}

func (self *ScriptService) GetByID(
	ctx context.Context,
	id int64,
) (*repository.ScriptInterpreter, error) {
	return self.repo.GetByID(ctx, id)
}

func (self *ScriptService) List(ctx context.Context) ([]repository.ScriptInterpreter, error) {
	return self.repo.List(ctx)
}

func (self *ScriptService) Update(
	ctx context.Context,
	id int64,
	in repository.ScriptInterpreterUpdate,
) (*repository.ScriptInterpreter, error) {
	return self.repo.Update(ctx, id, in)
}

func (self *ScriptService) Delete(ctx context.Context, id int64) error {
	return self.repo.Delete(ctx, id)
}