import { Stack } from '@mui/material';

import { Stage } from './components/Stage';
import { getStatus } from './components/Stage/utils';
import { MAX_STAGES, MAX_SUB_STAGES } from './constants';
import { type WizardProps } from './types';

const Wizard = ({
  stages,
  activeStage = 0,
  activeSubStage = 0,
  errorStages = [],
  errorSubStages = [],
  completedStages = [],
  onStageClick,
  onSubStageClick,
}: WizardProps) => {
  const limitedStages = stages.slice(0, MAX_STAGES).map(stage => ({
    ...stage,
    subStages: stage.subStages.slice(0, MAX_SUB_STAGES),
  }));

  const stageCount = limitedStages.length;
  const clampedActiveStage = Math.min(activeStage, stageCount - 1);
  const maxSubStages = limitedStages[clampedActiveStage]?.subStages.length ?? 0;
  const clampedActiveSubStage = Math.min(activeSubStage, maxSubStages - 1);
  const validErrorStages = errorStages?.filter(i => i < stageCount);
  const validCompletedStages = completedStages?.filter(i => i < stageCount);
  const validErrorSubStages = errorSubStages
    ?.filter(e => e.stageIndex < stageCount)
    .map(e => ({
      ...e,
      subStageIndexes: e.subStageIndexes.filter(
        i => i < (limitedStages[e.stageIndex]?.subStages.length ?? 0),
      ),
    }));

  return (
    <Stack sx={{ gap: 1 }}>
      {limitedStages.map((stage, index) => {
        const isCompleted = validCompletedStages?.includes(index);
        const status = getStatus(clampedActiveStage, index, isCompleted);
        const subStageErrors = validErrorSubStages?.find(
          error => error.stageIndex === index,
        )?.subStageIndexes;

        return (
          <Stage
            key={index}
            index={index}
            stage={stage}
            status={status}
            isCompleted={isCompleted}
            activeSubStage={clampedActiveSubStage}
            hasError={validErrorStages?.includes(index)}
            subStageErrors={subStageErrors}
            onStageClick={onStageClick}
            onSubStageClick={onSubStageClick}
          />
        );
      })}
    </Stack>
  );
};

export default Wizard;