10 files changed, 236 insertions, 0 deletions
diff --git a/packages/gitbook-core/src/reducers/components.js b/packages/gitbook-core/src/reducers/components.js
new file mode 100644
index 0000000..948a3ac
--- /dev/null
+++ b/packages/gitbook-core/src/reducers/components.js
@@ -0,0 +1,20 @@
+const { List } = require('immutable');
+const ACTION_TYPES = require('../actions/TYPES');
+
+function reduceComponents(state, action) {
+    state = state || List();
+    switch (action.type) {
+
+    case ACTION_TYPES.REGISTER_COMPONENT:
+        return state.push({
+            Component: action.Component,
+            descriptor: action.descriptor
+        });
+
+    default:
+        return state;
+
+    }
+}
+
+module.exports = reduceComponents;
diff --git a/packages/gitbook-core/src/reducers/config.js b/packages/gitbook-core/src/reducers/config.js
new file mode 100644
index 0000000..a49c602
--- /dev/null
+++ b/packages/gitbook-core/src/reducers/config.js
@@ -0,0 +1,15 @@
+const { fromJS } = require('immutable');
+const ACTION_TYPES = require('../actions/TYPES');
+
+module.exports = (state, action) => {
+    state = fromJS(state);
+    switch (action.type) {
+
+    case ACTION_TYPES.PAGE_FETCH_END:
+        return fromJS(action.payload.config);
+
+    default:
+        return state;
+
+    }
+};
diff --git a/packages/gitbook-core/src/reducers/file.js b/packages/gitbook-core/src/reducers/file.js
new file mode 100644
index 0000000..82b0f42
--- /dev/null
+++ b/packages/gitbook-core/src/reducers/file.js
@@ -0,0 +1,16 @@
+const ACTION_TYPES = require('../actions/TYPES');
+const File = require('../models/File');
+
+module.exports = (state, action) => {
+    state = File.create(state);
+
+    switch (action.type) {
+
+    case ACTION_TYPES.PAGE_FETCH_END:
+        return state.merge(action.payload.file);
+
+    default:
+        return state;
+
+    }
+};
diff --git a/packages/gitbook-core/src/reducers/history.js b/packages/gitbook-core/src/reducers/history.js
new file mode 100644
index 0000000..be8fe42
--- /dev/null
+++ b/packages/gitbook-core/src/reducers/history.js
@@ -0,0 +1,82 @@
+const { Record, List } = require('immutable');
+const { createBrowserHistory, createMemoryHistory } = require('history');
+const ACTION_TYPES = require('../actions/TYPES');
+const Location = require('../models/Location');
+
+const isServerSide = (typeof window === 'undefined');
+
+const HistoryState = Record({
+    // Current location
+    location:  new Location(),
+    // Are we loading a new page
+    loading:   Boolean(false),
+    // Did we fail loading a page?
+    error:     null,
+    // Listener for history changes
+    listeners: List(),
+    // Function to call to stop listening
+    unlisten:  null,
+    // HistoryJS instance
+    client:    null
+});
+
+function reduceHistory(state, action) {
+    state = state || HistoryState();
+    switch (action.type) {
+
+    case ACTION_TYPES.PAGE_FETCH_START:
+        return state.merge({
+            loading: true
+        });
+
+    case ACTION_TYPES.PAGE_FETCH_END:
+        return state.merge({
+            loading: false
+        });
+
+    case ACTION_TYPES.PAGE_FETCH_ERROR:
+        return state.merge({
+            loading: false,
+            error:   action.error
+        });
+
+    case ACTION_TYPES.HISTORY_ACTIVATE:
+        const client = isServerSide ? createMemoryHistory() : createBrowserHistory();
+        const unlisten = client.listen(action.listener);
+
+        // We can't use .merge since it convert history to an immutable
+        const newState = state
+            // TODO: we should find a way to have the correct location on server side
+            .set('location', isServerSide ? new Location() : Location.fromNative(window.location))
+            .set('client', client)
+            .set('unlisten', unlisten);
+
+        return newState;
+
+    case ACTION_TYPES.HISTORY_DEACTIVATE:
+        if (state.unlisten) {
+            state.unlisten();
+        }
+
+        return state.merge({
+            client:   null,
+            unlisten: null
+        });
+
+    case ACTION_TYPES.HISTORY_UPDATE:
+        return state.merge({
+            location: action.location
+        });
+
+    case ACTION_TYPES.HISTORY_LISTEN:
+        return state.merge({
+            listeners: state.listeners.push(action.listener)
+        });
+
+    default:
+        return state;
+
+    }
+}
+
+module.exports = reduceHistory;
diff --git a/packages/gitbook-core/src/reducers/i18n.js b/packages/gitbook-core/src/reducers/i18n.js
new file mode 100644
index 0000000..4ffd129
--- /dev/null
+++ b/packages/gitbook-core/src/reducers/i18n.js
@@ -0,0 +1,27 @@
+const { Record, Map } = require('immutable');
+const ACTION_TYPES = require('../actions/TYPES');
+
+const I18nState = Record({
+    locale: 'en',
+    // Map of locale -> Map<String:String>
+    messages: Map()
+});
+
+function reduceI18n(state, action) {
+    state = state || I18nState();
+    switch (action.type) {
+
+    case ACTION_TYPES.I18N_REGISTER_LOCALE:
+        return state.merge({
+            messages: state.messages.set(action.locale,
+                state.messages.get(action.locale, Map()).merge(action.messages)
+            )
+        });
+
+    default:
+        return state;
+
+    }
+}
+
+module.exports = reduceI18n;
diff --git a/packages/gitbook-core/src/reducers/index.js b/packages/gitbook-core/src/reducers/index.js
new file mode 100644
index 0000000..a211d3b
--- /dev/null
+++ b/packages/gitbook-core/src/reducers/index.js
@@ -0,0 +1,15 @@
+const composeReducer = require('../lib/composeReducer');
+const createReducer = require('../lib/createReducer');
+
+module.exports = composeReducer(
+    createReducer('components', require('./components')),
+    createReducer('history', require('./history')),
+    createReducer('i18n', require('./i18n')),
+    // GitBook JSON
+    createReducer('config', require('./config')),
+    createReducer('file', require('./file')),
+    createReducer('page', require('./page')),
+    createReducer('summary', require('./summary')),
+    createReducer('readme', require('./readme')),
+    createReducer('languages', require('./languages'))
+);
diff --git a/packages/gitbook-core/src/reducers/languages.js b/packages/gitbook-core/src/reducers/languages.js
new file mode 100644
index 0000000..0ec2ae4
--- /dev/null
+++ b/packages/gitbook-core/src/reducers/languages.js
@@ -0,0 +1,12 @@
+const Languages = require('../models/Languages');
+
+module.exports = (state, action) => {
+    state = Languages.create(state);
+
+    switch (action.type) {
+
+    default:
+        return state;
+
+    }
+};
diff --git a/packages/gitbook-core/src/reducers/page.js b/packages/gitbook-core/src/reducers/page.js
new file mode 100644
index 0000000..9b94d1e
--- /dev/null
+++ b/packages/gitbook-core/src/reducers/page.js
@@ -0,0 +1,16 @@
+const ACTION_TYPES = require('../actions/TYPES');
+const Page = require('../models/Page');
+
+module.exports = (state, action) => {
+    state = Page.create(state);
+
+    switch (action.type) {
+
+    case ACTION_TYPES.PAGE_FETCH_END:
+        return state.merge(action.payload.page);
+
+    default:
+        return state;
+
+    }
+};
diff --git a/packages/gitbook-core/src/reducers/readme.js b/packages/gitbook-core/src/reducers/readme.js
new file mode 100644
index 0000000..9e8656a
--- /dev/null
+++ b/packages/gitbook-core/src/reducers/readme.js
@@ -0,0 +1,5 @@
+const Readme = require('../models/Readme');
+
+module.exports = (state, action) => {
+    return Readme.create(state);
+};
diff --git a/packages/gitbook-core/src/reducers/summary.js b/packages/gitbook-core/src/reducers/summary.js
new file mode 100644
index 0000000..60568ef
--- /dev/null
+++ b/packages/gitbook-core/src/reducers/summary.js
@@ -0,0 +1,28 @@
+const { Record, List } = require('immutable');
+
+const File = require('../models/File');
+const SummaryPart = require('../models/SummaryPart');
+
+
+class SummaryState extends Record({
+    file: new File(),
+    parts: List()
+}) {
+    constructor(state = {}) {
+        super({
+            ...state,
+            file:  new File(state.file),
+            parts: (new List(state.parts))
+                .map(article => new SummaryPart(article))
+        });
+    }
+
+    static create(state) {
+        return state instanceof SummaryState ?
+            state : new SummaryState(state);
+    }
+}
+
+module.exports = (state, action) => {
+    return SummaryState.create(state);
+};