import {
  RawValueSignature,
  SpecifyStepsTimingFunctionValue,
  TokenState,
} from '@specifyapp/specify-design-token-format';
import { unwrapInnerValue } from '../../_utils/unwrapInnerValue.js';
import { DEFAULT_UNRESOLVABLE_STRATEGY } from '../aliasStrategies/throwOnUnresolvable.js';
import {
  CssResolvableAliasStrategy,
  CssUnresolvableAliasStrategy,
} from '../aliasStrategies/CssAliasStrategy.js';

/**
 * Converts a `TokenState<'stepsTimingFunction'>` to a css value.
 * E.g: `steps(5, end)`
 */
export function stepsTimingFunctionToCss<UnresolvableReturn = never>(
  aliasStrategy: CssResolvableAliasStrategy,
  unresolvableAliasStrategy: CssUnresolvableAliasStrategy<UnresolvableReturn> = DEFAULT_UNRESOLVABLE_STRATEGY,
) {
  return (tokenState: TokenState<'stepsTimingFunction'>) =>
    tokenState
      .getStatefulValueResult()
      .mapResolvableTopLevelAlias(aliasStrategy)
      .mapUnresolvableTopLevelAlias(alias => unresolvableAliasStrategy(tokenState, alias))
      .mapTopLevelValue(value =>
        value
          .mapRawValue(rawValue =>
            rawStepsTimingFunctionToCss(rawValue, aliasStrategy, unresolvableAliasStrategy),
          )
          .mapResolvableModeLevelAlias(aliasStrategy)
          .mapUnresolvableModeLevelAlias(alias => unresolvableAliasStrategy(tokenState, alias))
          .unwrap(),
      )
      .unwrap();
}

/**
 * Converts a `RawValueSignature<'stepsTimingFunction'>` to css.
 */
export function rawStepsTimingFunctionToCss<UnresolvableReturn = never>(
  timingFunction: RawValueSignature<'stepsTimingFunction'>,
  aliasStrategy: CssResolvableAliasStrategy,
  unresolvableAliasStrategy: CssUnresolvableAliasStrategy<UnresolvableReturn> = DEFAULT_UNRESOLVABLE_STRATEGY,
) {
  return `steps(${unwrapInnerValue(
    timingFunction.stepsCount,
    aliasStrategy,
    unresolvableAliasStrategy,
  )}, ${unwrapInnerValue(timingFunction.jumpTerm, aliasStrategy, unresolvableAliasStrategy)})`;
}

/**
 * Converts a timingFunction to css.
 */
export function stepsTimingFunctionValueToCss(timingFunction: SpecifyStepsTimingFunctionValue) {
  return `steps(${timingFunction.stepsCount}, ${timingFunction.jumpTerm})`;
}