// forms.ts
// Copyright (C) 2020  Dwayne Harris

// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.

// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
// GNU General Public License for more details.

// You should have received a copy of the GNU General Public License
// along with this program.  If not, see <https://www.gnu.org/licenses/>.

import { Reducer } from 'redux'

import { FormsActions } from '../actions/forms'
import { FormsState } from '../types'

const initialState: FormsState = {
    form: {},
    notification: undefined,
}

const reducer: Reducer<FormsState, FormsActions> = (state = initialState, action) => {
    switch (action.type) {
        case 'FORMS_INIT':
            return {
                form: {},
                notification: undefined,
            }
        case 'FORMS_INIT_FIELD':
            const { name, value, apiName } = action.payload

            return {
                ...state,
                form: {
                    ...state.form,
                    [name]: {
                        name,
                        value,
                        apiName,
                    },
                },
            }
        case 'FORMS_SET_FIELD_VALUE': {
            const field = state.form[action.payload.name]

            return {
                ...state,
                form: {
                    ...state.form,
                    [action.payload.name]: {
                        ...field,
                        value: action.payload.value,
                        notification: undefined,
                    },
                },
            }
        }
        case 'FORMS_SET_FORM_NOTIFICATION':
            const { type, message } = action.payload

            return {
                ...state,
                notification: {
                    type,
                    message,
                },
            }
        case 'FORMS_SET_FIELD_NOTIFICATION': {
            const { name, type, message } = action.payload

            const getField = () => {
                const field = Object.entries(state.form).find(([_, value]) => value.apiName ? name === value.apiName : false)
                if (field) return field[1]

                return state.form[name]
            }

            const field = getField()
            
            return {
                ...state,
                form: {
                    ...state.form,
                    [field.name]: {
                        ...field,
                        notification: {
                            type,
                            message,
                        },
                    },
                },
            }
        }
        default:
            return state
    }
}

export default reducer