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import React, { createContext, useCallback } from 'react'
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import { useFetch } from '@hooks'
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export const ParadigmsContext = createContext()
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export default function ParadigmsProvider({ url, children }) {
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  const { data, isLoading: loading, mutate } = useFetch(url, { items: [] })
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  const { items: paradigms, link_add, total } = data
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  const addParadigm = useCallback(
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    (newParadigm) => {
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      const newParadigms = [newParadigm, ...paradigms]
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      mutate({ ...data, items: newParadigms })
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    },
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    [paradigms, mutate]
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  )
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  const removeParadigm = useCallback(
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    (paradigmId) => {
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      const newParadigms = paradigms.filter(
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        (paradigm) => paradigm.id !== paradigmId
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      )
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      mutate({ ...data, items: newParadigms })
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    },
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    [paradigms, mutate]
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  )
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  const updateParadigm = useCallback(
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    (updatedParadigm) => {
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      const newParadigms = paradigms.map((paradigm) =>
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        paradigm.id === updatedParadigm.id ? updatedParadigm : paradigm
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      )
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      mutate({ ...data, items: newParadigms })
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    },
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    [paradigms, mutate]
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  )
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  const getParadigmById = useCallback(
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    (paradigmId) => paradigms.find((paradigm) => paradigm.id === paradigmId),
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    [paradigms]
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  )
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  return (
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    <ParadigmsContext.Provider
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      value={{
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        loading,
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        paradigms,
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        addUrl: link_add,
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        total,
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        addParadigm,
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        removeParadigm,
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        updateParadigm,
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        getParadigmById
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      }}
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    >
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      {children}
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    </ParadigmsContext.Provider>
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  )
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}