Rust

let client = posthog_rs::client(env!("<ph_project_token>"));

[dependencies]
posthog-rs = { version = "0.3.5", default-features = false }

let is_enabled = client.is_feature_enabled(
    "flag-key".to_string(),
    "distinct_id_of_your_user".to_string(),
    None, // groups
    None, // person_properties
    None, // group_properties
).await.unwrap();
if is_enabled {
    // Do something differently for this user
}

use posthog_rs::FlagValue;
match client.get_feature_flag(
    "flag-key".to_string(),
    "distinct_id_of_your_user".to_string(),
    None, None, None
).await.unwrap() {
    Some(FlagValue::String(variant)) => {
        if variant == "variant-key" {
            // Do something for this variant
        }
    }
    Some(FlagValue::Boolean(enabled)) => {
        // Handle boolean flag
    }
    None => {
        // Flag not found or disabled
    }
}

let (flags, payloads) = client.get_feature_flags(
    "distinct_id_of_your_user".to_string(),
    None, None, None
).await.unwrap();
for (key, value) in flags {
    println!("Flag {}: {:?}", key, value);
}

let payload = client.get_feature_flag_payload(
    "flag-key".to_string(),
    "distinct_id_of_your_user".to_string()
).await.unwrap();
if let Some(data) = payload {
    println!("Payload: {}", data);
}

use std::collections::HashMap;
use serde_json::json;
let mut person_props = HashMap::new();
person_props.insert("plan".to_string(), json!("enterprise"));
person_props.insert("country".to_string(), json!("US"));
let flag = client.get_feature_flag(
    "premium-feature".to_string(),
    "distinct_id_of_your_user".to_string(),
    None,
    Some(person_props),
    None
).await.unwrap();

use std::collections::HashMap;
use serde_json::json;
let mut groups = HashMap::new();
groups.insert("company".to_string(), "company-123".to_string());
let mut group_props = HashMap::new();
let mut company_props = HashMap::new();
company_props.insert("size".to_string(), json!(500));
group_props.insert("company".to_string(), company_props);
let flag = client.get_feature_flag(
    "b2b-feature".to_string(),
    "distinct_id_of_your_user".to_string(),
    Some(groups),
    None,
    Some(group_props)
).await.unwrap();