From 6985b61127b2af7ce322778c1103c97f124a9ed4 Mon Sep 17 00:00:00 2001
From: Erkki Heino <evsheino@gmail.com>
Date: Thu, 26 Apr 2018 23:52:35 +0300
Subject: [PATCH] Use redux-observable

---
 .editorconfig                        |   3 +
 .eslintrc.js                         |   5 +-
 .gitignore                           |   1 +
 package-lock.json                    | 933 +--------------------------
 package.json                         |   3 +-
 src/actions/index.js                 |  24 +-
 src/epics/index.js                   |  24 +
 src/index.js                         |   8 +-
 src/middleware/hiplaApiMiddleware.js |  43 --
 src/reducers/search.js               |  19 +-
 10 files changed, 73 insertions(+), 990 deletions(-)
 create mode 100644 .editorconfig
 create mode 100644 src/epics/index.js
 delete mode 100644 src/middleware/hiplaApiMiddleware.js

diff --git a/.editorconfig b/.editorconfig
new file mode 100644
index 00000000..76a93c06
--- /dev/null
+++ b/.editorconfig
@@ -0,0 +1,3 @@
+[*]
+indent_style = space
+indent_size = 2
diff --git a/.eslintrc.js b/.eslintrc.js
index bd7f1330..d7dcd412 100644
--- a/.eslintrc.js
+++ b/.eslintrc.js
@@ -7,7 +7,8 @@ module.exports = {
     ],
     "quotes": [
       2,
-      "single"
+      "single",
+      { "allowTemplateLiterals": true }
     ],
     "linebreak-style": [
       2,
@@ -19,7 +20,7 @@ module.exports = {
     ],
     //'no-console': 'off',
     "react/jsx-uses-vars": ["error"],
-    "space-infix-ops": ["error", {"int32Hint": true}]
+    "space-infix-ops": ["error", {"int32Hint": true}],
   },
   "env": {
     "es6": true,
diff --git a/.gitignore b/.gitignore
index 3c3629e6..1bd72269 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1 +1,2 @@
 node_modules
+*.swp
diff --git a/package-lock.json b/package-lock.json
index 23ca8407..ccf7bf35 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1977,7 +1977,6 @@
         "anymatch": "2.0.0",
         "async-each": "1.0.1",
         "braces": "2.3.2",
-        "fsevents": "1.1.3",
         "glob-parent": "3.1.0",
         "inherits": "2.0.3",
         "is-binary-path": "1.0.1",
@@ -4250,910 +4249,6 @@
       "integrity": "sha1-FQStJSMVjKpA20onh8sBQRmU6k8=",
       "dev": true
     },
-    "fsevents": {
-      "version": "1.1.3",
-      "resolved": "https://registry.npmjs.org/fsevents/-/fsevents-1.1.3.tgz",
-      "integrity": "sha512-WIr7iDkdmdbxu/Gh6eKEZJL6KPE74/5MEsf2whTOFNxbIoIixogroLdKYqB6FDav4Wavh/lZdzzd3b2KxIXC5Q==",
-      "dev": true,
-      "optional": true,
-      "requires": {
-        "nan": "2.10.0",
-        "node-pre-gyp": "0.6.39"
-      },
-      "dependencies": {
-        "abbrev": {
-          "version": "1.1.0",
-          "bundled": true,
-          "dev": true,
-          "optional": true
-        },
-        "ajv": {
-          "version": "4.11.8",
-          "bundled": true,
-          "dev": true,
-          "optional": true,
-          "requires": {
-            "co": "4.6.0",
-            "json-stable-stringify": "1.0.1"
-          }
-        },
-        "ansi-regex": {
-          "version": "2.1.1",
-          "bundled": true,
-          "dev": true
-        },
-        "aproba": {
-          "version": "1.1.1",
-          "bundled": true,
-          "dev": true,
-          "optional": true
-        },
-        "are-we-there-yet": {
-          "version": "1.1.4",
-          "bundled": true,
-          "dev": true,
-          "optional": true,
-          "requires": {
-            "delegates": "1.0.0",
-            "readable-stream": "2.2.9"
-          }
-        },
-        "asn1": {
-          "version": "0.2.3",
-          "bundled": true,
-          "dev": true,
-          "optional": true
-        },
-        "assert-plus": {
-          "version": "0.2.0",
-          "bundled": true,
-          "dev": true,
-          "optional": true
-        },
-        "asynckit": {
-          "version": "0.4.0",
-          "bundled": true,
-          "dev": true,
-          "optional": true
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-        "aws-sign2": {
-          "version": "0.6.0",
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-          "dev": true,
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-        "aws4": {
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-        "balanced-match": {
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-          "dev": true
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-        "bcrypt-pbkdf": {
-          "version": "1.0.1",
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-          "dev": true,
-          "optional": true,
-          "requires": {
-            "tweetnacl": "0.14.5"
-          }
-        },
-        "block-stream": {
-          "version": "0.0.9",
-          "bundled": true,
-          "dev": true,
-          "requires": {
-            "inherits": "2.0.3"
-          }
-        },
-        "boom": {
-          "version": "2.10.1",
-          "bundled": true,
-          "dev": true,
-          "requires": {
-            "hoek": "2.16.3"
-          }
-        },
-        "brace-expansion": {
-          "version": "1.1.7",
-          "bundled": true,
-          "dev": true,
-          "requires": {
-            "balanced-match": "0.4.2",
-            "concat-map": "0.0.1"
-          }
-        },
-        "buffer-shims": {
-          "version": "1.0.0",
-          "bundled": true,
-          "dev": true
-        },
-        "caseless": {
-          "version": "0.12.0",
-          "bundled": true,
-          "dev": true,
-          "optional": true
-        },
-        "co": {
-          "version": "4.6.0",
-          "bundled": true,
-          "dev": true,
-          "optional": true
-        },
-        "code-point-at": {
-          "version": "1.1.0",
-          "bundled": true,
-          "dev": true
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-        "combined-stream": {
-          "version": "1.0.5",
-          "bundled": true,
-          "dev": true,
-          "requires": {
-            "delayed-stream": "1.0.0"
-          }
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-        "concat-map": {
-          "version": "0.0.1",
-          "bundled": true,
-          "dev": true
-        },
-        "console-control-strings": {
-          "version": "1.1.0",
-          "bundled": true,
-          "dev": true
-        },
-        "core-util-is": {
-          "version": "1.0.2",
-          "bundled": true,
-          "dev": true
-        },
-        "cryptiles": {
-          "version": "2.0.5",
-          "bundled": true,
-          "dev": true,
-          "requires": {
-            "boom": "2.10.1"
-          }
-        },
-        "dashdash": {
-          "version": "1.14.1",
-          "bundled": true,
-          "dev": true,
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-          "requires": {
-            "assert-plus": "1.0.0"
-          },
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-              "version": "1.0.0",
-              "bundled": true,
-              "dev": true,
-              "optional": true
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-        "debug": {
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-        "deep-extend": {
-          "version": "0.4.2",
-          "bundled": true,
-          "dev": true,
-          "optional": true
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-          "version": "1.0.0",
-          "bundled": true,
-          "dev": true
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-          "bundled": true,
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-          "optional": true
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-        "detect-libc": {
-          "version": "1.0.2",
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-          "bundled": true,
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-        "extsprintf": {
-          "version": "1.0.2",
-          "bundled": true,
-          "dev": true
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-          "dev": true,
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-          "requires": {
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-            "combined-stream": "1.0.5",
-            "mime-types": "2.1.15"
-          }
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-        "fs.realpath": {
-          "version": "1.0.0",
-          "bundled": true,
-          "dev": true
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-        "fstream": {
-          "version": "1.0.11",
-          "bundled": true,
-          "dev": true,
-          "requires": {
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-            "inherits": "2.0.3",
-            "mkdirp": "0.5.1",
-            "rimraf": "2.6.1"
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-          "version": "2.7.4",
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-          "version": "7.1.2",
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-            "tough-cookie": "2.3.2",
-            "tunnel-agent": "0.6.0",
-            "uuid": "3.0.1"
-          }
-        },
-        "rimraf": {
-          "version": "2.6.1",
-          "bundled": true,
-          "dev": true,
-          "requires": {
-            "glob": "7.1.2"
-          }
-        },
-        "safe-buffer": {
-          "version": "5.0.1",
-          "bundled": true,
-          "dev": true
-        },
-        "semver": {
-          "version": "5.3.0",
-          "bundled": true,
-          "dev": true,
-          "optional": true
-        },
-        "set-blocking": {
-          "version": "2.0.0",
-          "bundled": true,
-          "dev": true,
-          "optional": true
-        },
-        "signal-exit": {
-          "version": "3.0.2",
-          "bundled": true,
-          "dev": true,
-          "optional": true
-        },
-        "sntp": {
-          "version": "1.0.9",
-          "bundled": true,
-          "dev": true,
-          "requires": {
-            "hoek": "2.16.3"
-          }
-        },
-        "sshpk": {
-          "version": "1.13.0",
-          "bundled": true,
-          "dev": true,
-          "optional": true,
-          "requires": {
-            "asn1": "0.2.3",
-            "assert-plus": "1.0.0",
-            "bcrypt-pbkdf": "1.0.1",
-            "dashdash": "1.14.1",
-            "ecc-jsbn": "0.1.1",
-            "getpass": "0.1.7",
-            "jodid25519": "1.0.2",
-            "jsbn": "0.1.1",
-            "tweetnacl": "0.14.5"
-          },
-          "dependencies": {
-            "assert-plus": {
-              "version": "1.0.0",
-              "bundled": true,
-              "dev": true,
-              "optional": true
-            }
-          }
-        },
-        "string-width": {
-          "version": "1.0.2",
-          "bundled": true,
-          "dev": true,
-          "requires": {
-            "code-point-at": "1.1.0",
-            "is-fullwidth-code-point": "1.0.0",
-            "strip-ansi": "3.0.1"
-          }
-        },
-        "string_decoder": {
-          "version": "1.0.1",
-          "bundled": true,
-          "dev": true,
-          "requires": {
-            "safe-buffer": "5.0.1"
-          }
-        },
-        "stringstream": {
-          "version": "0.0.5",
-          "bundled": true,
-          "dev": true,
-          "optional": true
-        },
-        "strip-ansi": {
-          "version": "3.0.1",
-          "bundled": true,
-          "dev": true,
-          "requires": {
-            "ansi-regex": "2.1.1"
-          }
-        },
-        "strip-json-comments": {
-          "version": "2.0.1",
-          "bundled": true,
-          "dev": true,
-          "optional": true
-        },
-        "tar": {
-          "version": "2.2.1",
-          "bundled": true,
-          "dev": true,
-          "requires": {
-            "block-stream": "0.0.9",
-            "fstream": "1.0.11",
-            "inherits": "2.0.3"
-          }
-        },
-        "tar-pack": {
-          "version": "3.4.0",
-          "bundled": true,
-          "dev": true,
-          "optional": true,
-          "requires": {
-            "debug": "2.6.8",
-            "fstream": "1.0.11",
-            "fstream-ignore": "1.0.5",
-            "once": "1.4.0",
-            "readable-stream": "2.2.9",
-            "rimraf": "2.6.1",
-            "tar": "2.2.1",
-            "uid-number": "0.0.6"
-          }
-        },
-        "tough-cookie": {
-          "version": "2.3.2",
-          "bundled": true,
-          "dev": true,
-          "optional": true,
-          "requires": {
-            "punycode": "1.4.1"
-          }
-        },
-        "tunnel-agent": {
-          "version": "0.6.0",
-          "bundled": true,
-          "dev": true,
-          "optional": true,
-          "requires": {
-            "safe-buffer": "5.0.1"
-          }
-        },
-        "tweetnacl": {
-          "version": "0.14.5",
-          "bundled": true,
-          "dev": true,
-          "optional": true
-        },
-        "uid-number": {
-          "version": "0.0.6",
-          "bundled": true,
-          "dev": true,
-          "optional": true
-        },
-        "util-deprecate": {
-          "version": "1.0.2",
-          "bundled": true,
-          "dev": true
-        },
-        "uuid": {
-          "version": "3.0.1",
-          "bundled": true,
-          "dev": true,
-          "optional": true
-        },
-        "verror": {
-          "version": "1.3.6",
-          "bundled": true,
-          "dev": true,
-          "optional": true,
-          "requires": {
-            "extsprintf": "1.0.2"
-          }
-        },
-        "wide-align": {
-          "version": "1.1.2",
-          "bundled": true,
-          "dev": true,
-          "optional": true,
-          "requires": {
-            "string-width": "1.0.2"
-          }
-        },
-        "wrappy": {
-          "version": "1.0.2",
-          "bundled": true,
-          "dev": true
-        }
-      }
-    },
     "function-bind": {
       "version": "1.1.1",
       "resolved": "https://registry.npmjs.org/function-bind/-/function-bind-1.1.1.tgz",
@@ -5254,6 +4349,11 @@
         }
       }
     },
+    "gitbook-plugin-github": {
+      "version": "2.0.0",
+      "resolved": "https://registry.npmjs.org/gitbook-plugin-github/-/gitbook-plugin-github-2.0.0.tgz",
+      "integrity": "sha1-UWbnY8/MQC1DKIC3pshcHFS1ao0="
+    },
     "github-username": {
       "version": "4.1.0",
       "resolved": "https://registry.npmjs.org/github-username/-/github-username-4.1.0.tgz",
@@ -7716,13 +6816,6 @@
       "integrity": "sha1-MHXOk7whuPq0PhvE2n6BFe0ee6s=",
       "dev": true
     },
-    "nan": {
-      "version": "2.10.0",
-      "resolved": "https://registry.npmjs.org/nan/-/nan-2.10.0.tgz",
-      "integrity": "sha512-bAdJv7fBLhWC+/Bls0Oza+mvTaNQtP+1RyhhhvD95pgUJz6XM5IzgmxOkItJ9tkoCiplvAnXI1tNmmUD/eScyA==",
-      "dev": true,
-      "optional": true
-    },
     "nanomatch": {
       "version": "1.2.9",
       "resolved": "https://registry.npmjs.org/nanomatch/-/nanomatch-1.2.9.tgz",
@@ -9625,15 +8718,13 @@
         }
       }
     },
-    "redux-debounced": {
-      "version": "0.5.0",
-      "resolved": "https://registry.npmjs.org/redux-debounced/-/redux-debounced-0.5.0.tgz",
-      "integrity": "sha512-O2anhB0A6yQZH19uLETFtajcUQLcyiJcgC0hHSoFr5T3hWGtt0C5s6KNnb2RX51MwCh5VCl9ehZTv91F/rsZww=="
-    },
-    "redux-thunk": {
-      "version": "2.2.0",
-      "resolved": "https://registry.npmjs.org/redux-thunk/-/redux-thunk-2.2.0.tgz",
-      "integrity": "sha1-5hWhbha0ehmlFXZhM9Hj6Zt4UuU="
+    "redux-observable": {
+      "version": "0.18.0",
+      "resolved": "https://registry.npmjs.org/redux-observable/-/redux-observable-0.18.0.tgz",
+      "integrity": "sha512-tu02n6jr6/bq/vyI9E/AHxIyIl0YsWloqvWqSBG0KqN6aQBujMBP6hlDAlQLj8hP+XQpqL293MLX6V612c0jSg==",
+      "requires": {
+        "gitbook-plugin-github": "2.0.0"
+      }
     },
     "regenerate": {
       "version": "1.3.3",
diff --git a/package.json b/package.json
index fca19ef1..b86e1311 100644
--- a/package.json
+++ b/package.json
@@ -44,8 +44,7 @@
     "react-leaflet-fullscreen": "0.0.6",
     "react-redux": "^5.0.7",
     "redux": "^4.0.0",
-    "redux-debounced": "^0.5.0",
-    "redux-thunk": "^2.2.0",
+    "redux-observable": "^0.18.0",
     "superagent": "^3.8.2"
   }
 }
diff --git a/src/actions/index.js b/src/actions/index.js
index c9b8905b..f784ea63 100644
--- a/src/actions/index.js
+++ b/src/actions/index.js
@@ -1,31 +1,33 @@
+export const FETCH_RESULTS = 'FETCH_RESULTS';
+export const UPDATE_QUERY = 'UPDATE_QUERY';
+export const UPDATE_DATASETS = 'UPDATE_DATASETS';
+export const UPDATE_RESULTS = 'UPDATE_RESULTS';
+export const CLEAR_RESULTS = 'CLEAR_RESULTS';
+export const START_SPINNER = 'START_SPINNER';
+
 export const updateQuery = (query) => ({
-  type: 'UPDATE_QUERY',
+  type: UPDATE_QUERY,
   query
 });
 
 export const fetchResults = () => ({
-  type: 'FETCH_RESULTS',
-  meta: {
-    debounce: {
-      time: 750
-    }
-  }
+  type: FETCH_RESULTS,
 });
 
 export const updateDatasets = (datasets) => ({
-  type: 'UPDATE_DATASETS',
+  type: UPDATE_DATASETS,
   datasets
 });
 
 export const startSpinner = () => ({
-  type: 'START_SPINNER',
+  type: START_SPINNER,
 });
 
 export const updateResults = (results) => ({
-  type: 'UPDATE_RESULTS',
+  type: UPDATE_RESULTS,
   results
 });
 
 export const clearResults = () => ({
-  type: 'CLEAR_RESULTS',
+  type: CLEAR_RESULTS,
 });
diff --git a/src/epics/index.js b/src/epics/index.js
new file mode 100644
index 00000000..698d7d27
--- /dev/null
+++ b/src/epics/index.js
@@ -0,0 +1,24 @@
+import 'rxjs';
+import _ from 'lodash';
+import { ajax } from 'rxjs/observable/dom/ajax';
+import { combineEpics } from 'redux-observable';
+import { updateResults, FETCH_RESULTS } from '../actions';
+
+const getSuggestionsEpic = (action$, store) => {
+  const searchUrl = 'http://localhost:3000/search';
+
+  return action$.ofType(FETCH_RESULTS)
+    .debounceTime(500)
+    .switchMap(() => {
+      const { query, datasets } = store.getState().search;
+      const dsParams = _.map(datasets, ds => `dataset=${ds}`).join('&');
+
+      const requestUrl = `${searchUrl}?q=${query}&${dsParams}`;
+      return ajax.getJSON(requestUrl)
+        .map(response => updateResults(response));
+    });
+};
+
+const rootEpic = combineEpics(getSuggestionsEpic);
+
+export default rootEpic;
diff --git a/src/index.js b/src/index.js
index 905d818b..bc07fcae 100644
--- a/src/index.js
+++ b/src/index.js
@@ -1,19 +1,17 @@
 import React from 'react';
 import { render } from 'react-dom';
 import { createStore, applyMiddleware } from 'redux';
+import { createEpicMiddleware } from 'redux-observable';
 import { Provider } from 'react-redux';
-import thunk from 'redux-thunk';
 import reducer from './reducers';
-// import { logger, crashReporter } from './middleware/crashReporter';
-import hiplaApiMiddleware from './middleware/hiplaApiMiddleware';
-import createDebounce from 'redux-debounced';
+import rootEpic from './epics';
 
 import App from './components/App';
 
 const store = createStore(
   reducer,
   // applyMiddleware() tells createStore() how to handle middleware
-  applyMiddleware(thunk, createDebounce(), hiplaApiMiddleware())
+  applyMiddleware(createEpicMiddleware(rootEpic))
 );
 
 render(
diff --git a/src/middleware/hiplaApiMiddleware.js b/src/middleware/hiplaApiMiddleware.js
deleted file mode 100644
index 5fc60fb5..00000000
--- a/src/middleware/hiplaApiMiddleware.js
+++ /dev/null
@@ -1,43 +0,0 @@
-import { startSpinner, updateResults } from '../actions';
-import request from 'superagent';
-
-const hiplaApiMiddleware = () => {
-
-  const searchUrl = 'http://localhost:3000/search';
-
-  const getResults = (store) => {
-    const { query, datasets } = store.getState().search;
-    if (query.length < 3) {
-      return store.dispatch(updateResults([]));
-    }
-
-    console.log('query:', query);
-    console.log('datasets:', datasets);
-    return request(searchUrl)
-      .query({ q: query})
-      .query({ dataset: datasets})
-      .then(response => {
-        if (!response.ok) {
-          return Promise.reject(response);
-        }
-        return store.dispatch(updateResults(response.body));
-      });
-  };
-
-  // A Redux middleware
-  return store => next => action => {
-    switch(action.type) {
-      case 'FETCH_RESULTS':
-        console.log('action: FETCH_RESULTS');
-
-        store.dispatch(startSpinner);
-        next(action);
-        return getResults(store);
-
-      default:
-        return next(action);
-    }
-  };
-};
-
-export default hiplaApiMiddleware;
diff --git a/src/reducers/search.js b/src/reducers/search.js
index 13807321..2925626e 100644
--- a/src/reducers/search.js
+++ b/src/reducers/search.js
@@ -1,3 +1,5 @@
+import { UPDATE_QUERY, FETCH_RESULTS, UPDATE_DATASETS, UPDATE_RESULTS, CLEAR_RESULTS } from '../actions';
+
 export const INITIAL_STATE = {
   query: '',
   datasets: ['warsa_karelian_places'],
@@ -5,15 +7,20 @@ export const INITIAL_STATE = {
 };
 
 const search = (state = INITIAL_STATE, action) => {
-  // console.log(state, action);
   switch (action.type) {
-    case 'UPDATE_QUERY':
+    case UPDATE_QUERY:
       return { ...state, query: action.query || '' };
-    case 'UPDATE_DATASETS':
+    case FETCH_RESULTS:
+      return { ...state, isFetchingResults: true };
+    case UPDATE_DATASETS:
       return { ...state, datasets: action.datasets || [] };
-    case 'UPDATE_RESULTS':
-      return { ...state, suggestions: action.results || [] };
-    case 'CLEAR_RESULTS':
+    case UPDATE_RESULTS:
+      return {
+        ...state,
+        suggestions: action.results || [],
+        isFetchingResults: false
+      };
+    case CLEAR_RESULTS:
       return { ...state, suggestions: [] };
     default:
       return state;
-- 
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