project done

client/src/reducers/alert.js

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+import { SET_ALERT, REMOVE_ALERT } from '../actions/types';
+
+const initialState = [];
+
+function alertReducer(state = initialState, action) {
+  const { type, payload } = action;
+
+  switch (type) {
+    case SET_ALERT:
+      return [...state, payload];
+    case REMOVE_ALERT:
+      return state.filter((alert) => alert.id !== payload);
+    default:
+      return state;
+  }
+}
+
+export default alertReducer;

client/src/reducers/auth.js

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+import {
+  REGISTER_SUCCESS,
+  //REGISTER_FAIL,
+  USER_LOADED,
+  AUTH_ERROR,
+  LOGIN_SUCCESS,
+  //LOGIN_FAIL,
+  LOGOUT,
+  ACCOUNT_DELETED
+} from '../actions/types';
+
+const initialState = {
+  token: localStorage.getItem('token'),
+  isAuthenticated: null,
+  loading: true,
+  user: null
+};
+
+function authReducer(state = initialState, action) {
+  const { type, payload } = action;
+
+  switch (type) {
+    case USER_LOADED:
+      return {
+        ...state,
+        isAuthenticated: true,
+        loading: false,
+        user: payload
+      };
+    case REGISTER_SUCCESS:
+    case LOGIN_SUCCESS:
+      return {
+        ...state,
+        ...payload,
+        isAuthenticated: true,
+        loading: false
+      };
+    case ACCOUNT_DELETED:
+    case AUTH_ERROR:
+    case LOGOUT:
+      return {
+        ...state,
+        token: null,
+        isAuthenticated: false,
+        loading: false,
+        user: null
+      };
+    default:
+      return state;
+  }
+}
+
+export default authReducer;

client/src/reducers/index.js

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+import { combineReducers } from 'redux';
+import alert from './alert';
+import auth from './auth';
+import profile from './profile';
+import post from './post';
+
+export default combineReducers({
+  alert,
+  auth,
+  profile,
+  post
+});

client/src/reducers/post.js

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+import {
+    GET_POSTS,
+    POST_ERROR,
+    UPDATE_LIKES,
+    DELETE_POST,
+    ADD_POST,
+    GET_POST,
+    ADD_COMMENT,
+    REMOVE_COMMENT
+  } from '../actions/types';
+  
+  const initialState = {
+    posts: [],
+    post: null,
+    loading: true,
+    error: {}
+  };
+  
+  function postReducer(state = initialState, action) {
+    const { type, payload } = action;
+  
+    switch (type) {
+      case GET_POSTS:
+        return {
+          ...state,
+          posts: payload,
+          loading: false
+        };
+      case GET_POST:
+        return {
+          ...state,
+          post: payload,
+          loading: false
+        };
+      case ADD_POST:
+        return {
+          ...state,
+          posts: [payload, ...state.posts],
+          loading: false
+        };
+      case DELETE_POST:
+        return {
+          ...state,
+          posts: state.posts.filter((post) => post._id !== payload),
+          loading: false
+        };
+      case POST_ERROR:
+        return {
+          ...state,
+          error: payload,
+          loading: false
+        };
+      case UPDATE_LIKES:
+        return {
+          ...state,
+          posts: state.posts.map((post) =>
+            post._id === payload.id ? { ...post, likes: payload.likes } : post
+          ),
+          loading: false
+        };
+      case ADD_COMMENT:
+        return {
+          ...state,
+          post: { ...state.post, comments: payload },
+          loading: false
+        };
+      case REMOVE_COMMENT:
+        return {
+          ...state,
+          post: {
+            ...state.post,
+            comments: state.post.comments.filter(
+              (comment) => comment._id !== payload
+            )
+          },
+          loading: false
+        };
+      default:
+        return state;
+    }
+  }
+  
+  export default postReducer;

client/src/reducers/profile.js

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+import {
+  GET_PROFILE,
+  PROFILE_ERROR,
+  CLEAR_PROFILE,
+  UPDATE_PROFILE,
+  GET_PROFILES,
+  GET_REPOS,
+  NO_REPOS,
+} from "../actions/types";
+
+const initialState = {
+  profile: null,
+  profiles: [],
+  repos: [],
+  loading: true,
+  error: {},
+};
+
+function profileReducer(state = initialState, action) {
+  const { type, payload } = action;
+
+  switch (type) {
+    case GET_PROFILE:
+    case UPDATE_PROFILE:
+      return {
+        ...state,
+        profile: payload,
+        loading: false,
+      };
+    case GET_PROFILES:
+      return {
+        ...state,
+        profiles: payload,
+        loading: false,
+      };
+    case PROFILE_ERROR:
+      return {
+        ...state,
+        error: payload,
+        loading: false,
+        profile: null,
+      };
+    case CLEAR_PROFILE:
+      return {
+        ...state,
+        profile: null,
+        repos: [],
+      };
+    case GET_REPOS:
+      return {
+        ...state,
+        repos: payload,
+        loading: false,
+      };
+    case NO_REPOS:
+      return {
+        ...state,
+        repos: [],
+      };
+    default:
+      return state;
+  }
+}
+
+export default profileReducer;