/**
 * useKbxDirtyState — v60
 * Track unsaved changes in forms
 */

import { ref, computed } from 'vue'

export interface DirtyState {
  [key: string]: boolean
}

export function useKbxDirtyState(initialState: DirtyState = {}) {
  const dirtyFields = ref<DirtyState>(initialState)

  /**
   * Check if form is dirty (has unsaved changes)
   */
  const dirty = computed(() => Object.values(dirtyFields.value).some(v => v))

  /**
   * Check if specific field is dirty
   */
  const isFieldDirty = (field: string): boolean => {
    return dirtyFields.value[field] ?? false
  }

  /**
   * Mark field as dirty
   */
  const markFieldDirty = (field: string): void => {
    dirtyFields.value[field] = true
  }

  /**
   * Mark field as clean
   */
  const markFieldClean = (field: string): void => {
    dirtyFields.value[field] = false
  }

  /**
   * Mark all fields as clean
   */
  const markAllClean = (): void => {
    Object.keys(dirtyFields.value).forEach(key => {
      dirtyFields.value[key] = false
    })
  }

  /**
   * Mark all fields as dirty
   */
  const markAllDirty = (): void => {
    Object.keys(dirtyFields.value).forEach(key => {
      dirtyFields.value[key] = true
    })
  }

  /**
   * Reset to initial state
   */
  const reset = (newInitialState: DirtyState = {}): void => {
    dirtyFields.value = newInitialState
  }

  /**
   * Touch field (mark as visited)
   */
  const touchField = (field: string): void => {
    if (!(field in dirtyFields.value)) {
      dirtyFields.value[field] = false
    }
  }

  /**
   * Get dirty field names
   */
  const getDirtyFields = (): string[] => {
    return Object.entries(dirtyFields.value)
      .filter(([, isDirty]) => isDirty)
      .map(([field]) => field)
  }

  /**
   * Set dirty state of multiple fields
   */
  const setDirtyFields = (fields: DirtyState): void => {
    dirtyFields.value = { ...dirtyFields.value, ...fields }
  }

  return {
    dirty,
    dirtyFields,
    isFieldDirty,
    markFieldDirty,
    markFieldClean,
    markAllClean,
    markAllDirty,
    touchField,
    getDirtyFields,
    setDirtyFields,
    reset,
  }
}