1 files changed, 124 insertions, 0 deletions
diff --git a/packages/website/ts/components/forms/subscribe_form.tsx b/packages/website/ts/components/forms/subscribe_form.tsx
new file mode 100644
index 000000000..04ef28e70
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+++ b/packages/website/ts/components/forms/subscribe_form.tsx
@@ -0,0 +1,124 @@
+import { colors } from '@0xproject/react-shared';
+import * as _ from 'lodash';
+import * as React from 'react';
+
+import { Button } from 'ts/components/ui/button';
+import { Container } from 'ts/components/ui/container';
+import { Input } from 'ts/components/ui/input';
+import { Text } from 'ts/components/ui/text';
+import { styled } from 'ts/style/theme';
+import { backendClient } from 'ts/utils/backend_client';
+
+export interface SubscribeFormProps {}
+
+export enum SubscribeFormStatus {
+    None,
+    Error,
+    Success,
+    Loading,
+    Other,
+}
+
+export interface SubscribeFormState {
+    emailText: string;
+    lastSubmittedEmail: string;
+    status: SubscribeFormStatus;
+}
+
+const FORM_FONT_SIZE = '15px';
+
+// TODO: Translate visible strings. https://app.asana.com/0/628666249318202/697485674422001
+export class SubscribeForm extends React.Component<SubscribeFormProps, SubscribeFormState> {
+    public state = {
+        emailText: '',
+        lastSubmittedEmail: '',
+        status: SubscribeFormStatus.None,
+    };
+    public render(): React.ReactNode {
+        return (
+            <Container className="flex flex-column items-center justify-between md-mx2 sm-mx2">
+                <Container marginBottom="15px">
+                    <Text fontFamily="Roboto Mono" fontColor={colors.grey} center={true}>
+                        Subscribe to our newsletter for 0x relayer and dApp updates
+                    </Text>
+                </Container>
+                <form onSubmit={this._handleFormSubmitAsync.bind(this)}>
+                    <Container className="flex flex-wrap justify-center items-center">
+                        <Container marginTop="15px">
+                            <Input
+                                placeholder="you@email.com"
+                                value={this.state.emailText}
+                                fontColor={colors.white}
+                                fontSize={FORM_FONT_SIZE}
+                                backgroundColor={colors.projectsGrey}
+                                width="300px"
+                                onChange={this._handleEmailInputChange.bind(this)}
+                            />
+                        </Container>
+                        <Container marginLeft="15px" marginTop="15px">
+                            <Button
+                                type="submit"
+                                backgroundColor={colors.darkestGrey}
+                                fontColor={colors.white}
+                                fontSize={FORM_FONT_SIZE}
+                            >
+                                Subscribe
+                            </Button>
+                        </Container>
+                    </Container>
+                </form>
+                {this._renderMessage()}
+            </Container>
+        );
+    }
+    private _renderMessage(): React.ReactNode {
+        let message = null;
+        switch (this.state.status) {
+            case SubscribeFormStatus.Error:
+                message = 'Sorry, something went wrong. Try again later.';
+                break;
+            case SubscribeFormStatus.Loading:
+                message = 'One second...';
+                break;
+            case SubscribeFormStatus.Success:
+                message = `Thanks! ${this.state.lastSubmittedEmail} is now on the mailing list.`;
+                break;
+            case SubscribeFormStatus.None:
+                break;
+            default:
+                throw new Error(
+                    'The SubscribeFormStatus switch statement is not exhaustive when choosing an error message.',
+                );
+        }
+        return (
+            <Container isHidden={!message} marginTop="30px">
+                <Text center={true} fontFamily="Roboto Mono" fontColor={colors.grey}>
+                    {message || 'spacer text (never shown to user)'}
+                </Text>
+            </Container>
+        );
+    }
+    private _handleEmailInputChange(event: React.ChangeEvent<HTMLInputElement>): void {
+        this.setState({ emailText: event.target.value });
+    }
+    private async _handleFormSubmitAsync(event: React.FormEvent<HTMLInputElement>): Promise<void> {
+        event.preventDefault();
+        if (_.isUndefined(this.state.emailText) || _.isEmpty(this.state.emailText)) {
+            return;
+        }
+        this.setState({
+            status: SubscribeFormStatus.Loading,
+            lastSubmittedEmail: this.state.emailText,
+        });
+        try {
+            const response = await backendClient.subscribeToNewsletterAsync(this.state.emailText);
+            const status = response.status === 200 ? SubscribeFormStatus.Success : SubscribeFormStatus.Error;
+            this.setState({ status, emailText: '' });
+        } catch (error) {
+            this._setStatus(SubscribeFormStatus.Error);
+        }
+    }
+    private _setStatus(status: SubscribeFormStatus): void {
+        this.setState({ status });
+    }
+}