replace listen example with a small chat example

Co-authored-by: Stephen <webmaster@scd31.com>

.github/workflows/examples.yml

@@ -153,6 +153,20 @@ jobs:
           command: test
           args: -p sqlx-example-postgres-axum-social
 
+      - name: Chat (Setup)
+        working-directory: examples/postgres/chat
+        env:
+          DATABASE_URL: postgres://postgres:password@localhost:5432/chat
+        run: sqlx db create
+
+      - name: Chat (Run)
+        uses: actions-rs/cargo@v1
+        env:
+          DATABASE_URL: postgres://postgres:password@localhost:5432/chat
+        with:
+          command: run
+          args: -p sqlx-example-postgres-chat
+
       - name: Files (Setup)
         working-directory: examples/postgres/files
         env:
@@ -181,20 +195,6 @@ jobs:
           command: run
           args: -p sqlx-example-postgres-json
 
-      - name: Listen (Setup)
-        working-directory: examples/postgres/listen
-        env:
-          DATABASE_URL: postgres://postgres:password@localhost:5432/listen
-        run: sqlx db create
-
-      - name: Listen (Run)
-        uses: actions-rs/cargo@v1
-        env:
-          DATABASE_URL: postgres://postgres:password@localhost:5432/listen
-        with:
-          command: run
-          args: -p sqlx-example-postgres-listen
-
       - name: Mockable TODOs (Setup)
         working-directory: examples/postgres/mockable-todos
         env:

Cargo.toml

@@ -14,7 +14,7 @@ members = [
     "examples/postgres/axum-social-with-tests",
     "examples/postgres/files",
     "examples/postgres/json",
-    "examples/postgres/listen",
+    "examples/postgres/chat",
     "examples/postgres/todos",
     "examples/postgres/mockable-todos",
     "examples/postgres/transaction",

examples/postgres/chat/Cargo.toml

@@ -0,0 +1,13 @@
+[package]
+name = "sqlx-example-postgres-chat"
+version = "0.1.0"
+edition = "2021"
+workspace = "../../../"
+
+[dependencies]
+sqlx = { path = "../../../", features = [ "postgres", "runtime-tokio-native-tls" ] }
+futures = "0.3.1"
+tokio = { version = "1.20.0", features = [ "rt-multi-thread", "macros" ] }
+tui = "0.19.0"
+crossterm = "0.25"
+unicode-width = "0.1"

examples/postgres/chat/README.md

@@ -0,0 +1,21 @@
+# Chat Example
+
+## Description
+
+This example demonstrates how to use PostgreSQL channels to create a very simple chat application.
+
+## Setup
+
+1. Declare the database URL
+
+    ```
+    export DATABASE_URL="postgres://postgres:password@localhost/files"
+    ```
+
+## Usage
+
+Run the project
+
+```
+cargo run -p sqlx-examples-postgres-chat
+```