Add company survey example

examples/README.md

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+# Examples
+
+The `ballerinax/slack` connector provides practical examples illustrating usage in various scenarios, covering use cases like cache management, session management, and rate limiting.
+
+## Prerequisites
+
+1. Generate Slack token to authenticate the connector as described in the [Setup guide](https://central.ballerina.io/ballerinax/slack/latest#prerequisites).
+
+2. For each example, create a `Config.toml` file the related configuration. Here's an example of how your `Config.toml` file should look:
+
+   ```toml
+   token = "<token>"
+   ```
+
+## Running an Example
+
+Execute the following commands to build an example from the source:
+
+- To build an example:
+
+  ```bash
+  bal build
+  ```
+
+- To run an example:
+
+  ```bash
+  bal run
+  ```
+
+## Building the Examples with the Local Module
+
+**Warning**: Due to the absence of support for reading local repositories for single Ballerina files, the Bala of the module is manually written to the central repository as a workaround. Consequently, the bash script may modify your local Ballerina repositories.
+
+Execute the following commands to build all the examples against the changes you have made to the module locally:
+
+- To build all the examples:
+
+  ```bash
+  ./build.sh build
+  ```
+
+- To run all the examples:
+
+  ```bash
+  ./build.sh run
+  ```

examples/build.gradle

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+/*
+ * Copyright (c) 2024, WSO2 LLC. (http://www.wso2.com).
+ *
+ * WSO2 LLC. licenses this file to you under the Apache License,
+ * Version 2.0 (the "License"); you may not use this file except
+ * in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied. See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+
+import org.apache.tools.ant.taskdefs.condition.Os
+
+apply plugin: 'java'
+
+def graalvmFlag = ""
+
+task testExamples {
+    if (project.hasProperty("balGraalVMTest")) {
+        graalvmFlag = "--graalvm"
+    }
+    doLast {
+        try {
+            exec {
+                workingDir project.projectDir
+                println("Working dir: ${workingDir}")
+                if (Os.isFamily(Os.FAMILY_WINDOWS)) {
+                    commandLine 'cmd', "/c", "chmod +x ./build.sh && ./build.sh run && exit %%ERRORLEVEL%%"
+                } else {
+                    commandLine 'sh', "-c", "chmod +x ./build.sh && ./build.sh run"
+                }
+            }
+        } catch (Exception e) {
+            println("Example Build failed: " + e.message)
+            throw e
+        }
+    }
+}
+
+task buildExamples {
+    gradle.taskGraph.whenReady { graph ->
+        if (graph.hasTask(":slack-examples:test")) {
+            buildExamples.enabled = false
+        } else {
+            testExamples.enabled = false
+        }
+    }
+    doLast {
+        try {
+            exec {
+                workingDir project.projectDir
+                println("Working dir: ${workingDir}")
+                if (Os.isFamily(Os.FAMILY_WINDOWS)) {
+                    commandLine 'cmd', "/c", "chmod +x ./build.sh && ./build.sh build && exit %%ERRORLEVEL%%"
+                } else {
+                    commandLine 'sh', "-c", "chmod +x ./build.sh && ./build.sh build"
+                }
+            }
+        } catch (Exception e) {
+            println("Example Build failed: " + e.message)
+            throw e
+        }
+    }
+}
+
+buildExamples.dependsOn ":slack-ballerina:build"
+testExamples.dependsOn ":slack-ballerina:build"
+
+// TODO: Enable the examples build once https://github.com/ballerina-platform/ballerina-library/issues/6135 is fixed
+// test.dependsOn testExamples
+// build.dependsOn buildExamples

examples/build.sh

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+#!/bin/bash
+
+BAL_EXAMPLES_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
+BAL_CENTRAL_DIR="$HOME/.ballerina/repositories/central.ballerina.io"
+BAL_HOME_DIR="$BAL_EXAMPLES_DIR/../ballerina"
+
+set -e
+
+case "$1" in
+build)
+  BAL_CMD="build"
+  ;;
+run)
+  BAL_CMD="run"
+  ;;
+*)
+  echo "Invalid command provided: '$1'. Please provide 'build' or 'run' as the command."
+  exit 1
+  ;;
+esac
+
+# Read Ballerina package name
+BAL_PACKAGE_NAME=$(awk -F'"' '/^name/ {print $2}' "$BAL_HOME_DIR/Ballerina.toml")
+
+# Push the package to the local repository
+cd "$BAL_HOME_DIR" &&
+  bal pack &&
+  bal push --repository=local
+
+# Remove the cache directories in the repositories
+cacheDirs=$(ls -d $BAL_CENTRAL_DIR/cache-* 2>/dev/null) || true
+for dir in "${cacheDirs[@]}"; do
+  [ -d "$dir" ] && rm -r "$dir"
+done
+echo "Successfully cleaned the cache directories"
+
+# Create the package directory in the central repository, this will not be present if no modules are pulled
+mkdir -p "$BAL_CENTRAL_DIR/bala/ballerinax/$BAL_PACKAGE_NAME"
+
+# Update the central repository
+BAL_DESTINATION_DIR="$HOME/.ballerina/repositories/central.ballerina.io/bala/ballerinax/$BAL_PACKAGE_NAME"
+BAL_SOURCE_DIR="$HOME/.ballerina/repositories/local/bala/ballerinax/$BAL_PACKAGE_NAME"
+[ -d "$BAL_DESTINATION_DIR" ] && rm -r "$BAL_DESTINATION_DIR"
+[ -d "$BAL_SOURCE_DIR" ] && cp -r "$BAL_SOURCE_DIR" "$BAL_DESTINATION_DIR"
+echo "Successfully updated the local central repositories"
+
+echo "$BAL_DESTINATION_DIR"
+echo "$BAL_SOURCE_DIR"
+
+# Loop through examples in the examples directory
+cd "$BAL_EXAMPLES_DIR"
+for dir in $(find "$BAL_EXAMPLES_DIR" -type d -maxdepth 1  -mindepth 1); do
+  # Skip the build directory
+  if [[ "$dir" == *build ]]; then
+    continue
+  fi
+  (cd "$dir" && bal "$BAL_CMD" --offline && cd ..);
+done
+
+# Remove generated JAR files
+find "$BAL_HOME_DIR" -maxdepth 1 -type f -name "*.jar" | while read -r JAR_FILE; do
+  rm "$JAR_FILE"
+done

examples/companySurvey/Config.toml.template

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+token = "<token>"

examples/companySurvey/Slack company survey.md

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+# Slack Company Survey
+
+This use case demonstrates how the Slack API can be utilized to perform a company-wide survey by creating a dedicated channel to receive and track feedback replies.
+
+## Prerequisites
+
+### 1. Setup Slack account
+
+Generate Slack token to authenticate the connector as described in the [Setup guide](https://central.ballerina.io/ballerinax/slack/latest#prerequisites).
+
+### 2. Configuration
+
+Update your Slack account related configurations in the `Config.toml` file in the example root directory:
+
+```toml
+token = "<token>"
+```
+
+## Run the example
+
+Execute the following command to run the example:
+
+```ballerina
+bal run
+```

examples/companySurvey/ballerina.toml

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+[package]
+org = "wso2"
+name = "company_survey"
+version = "0.1.0"
+distribution = "2201.9.0"

examples/companySurvey/main.bal

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+import ballerina/io; //importing the io module 
+import ballerinax/slack; //importing the slack connector module
+
+configurable string value = ?; //initializing of the configurable token value variable
+
+final slack:Client slack = check new ({ //the initialization of the slack client at module variable
+    auth: {
+        token: value
+    }
+});
+
+public function companySurvey() returns error? {
+
+    json conversationsResponse = check slack->/conversations\.create.post({name: "survey-coordination"});
+    io:println(conversationsResponse); //creation of a channel to coordinate surveys
+
+    json messageResponse = check slack->/chat\.postMessage.post({channel: "survey-coordination", text: "Reply to this survey message to give input on the company"});
+    io:println(messageResponse); //posting a message to the newly-created conversation
+
+    string timestamp_value = check messageResponse.message.ts; //the message response is used to extract the timestamp of the posted message
+
+    json replyResponse = check slack->/conversations\.replies({channel: "survey-coordination", ts: timestamp_value});
+    io:println(replyResponse); //the timestamp is used to extract the replies to the posted message
+}