1265 lines · 43.6 KB · Rust
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use anyhow::{Context, anyhow, bail};use axum::{    Extension, Json, Router,    extract::{self, Query},    routing::{get, post},};use chrono::{DateTime, SecondsFormat, Utc};use collections::HashSet;use reqwest::StatusCode;use sea_orm::ActiveValue;use serde::{Deserialize, Serialize};use serde_json::json;use std::{str::FromStr, sync::Arc, time::Duration};use stripe::{    BillingPortalSession, CancellationDetailsReason, CreateBillingPortalSession,    CreateBillingPortalSessionFlowData, CreateBillingPortalSessionFlowDataAfterCompletion,    CreateBillingPortalSessionFlowDataAfterCompletionRedirect,    CreateBillingPortalSessionFlowDataSubscriptionUpdateConfirm,    CreateBillingPortalSessionFlowDataSubscriptionUpdateConfirmItems,    CreateBillingPortalSessionFlowDataType, CreateCustomer, Customer, CustomerId, EventObject,    EventType, Expandable, ListEvents, Subscription, SubscriptionId, SubscriptionStatus,};use util::{ResultExt, maybe}; use crate::api::events::SnowflakeRow;use crate::db::billing_subscription::{    StripeCancellationReason, StripeSubscriptionStatus, SubscriptionKind,};use crate::llm::{DEFAULT_MAX_MONTHLY_SPEND, FREE_TIER_MONTHLY_SPENDING_LIMIT};use crate::rpc::{ResultExt as _, Server};use crate::{AppState, Cents, Error, Result};use crate::{db::UserId, llm::db::LlmDatabase};use crate::{    db::{        BillingSubscriptionId, CreateBillingCustomerParams, CreateBillingSubscriptionParams,        CreateProcessedStripeEventParams, UpdateBillingCustomerParams,        UpdateBillingPreferencesParams, UpdateBillingSubscriptionParams, billing_customer,    },    stripe_billing::StripeBilling,}; pub fn router() -> Router {    Router::new()        .route(            "/billing/preferences",            get(get_billing_preferences).put(update_billing_preferences),        )        .route(            "/billing/subscriptions",            get(list_billing_subscriptions).post(create_billing_subscription),        )        .route(            "/billing/subscriptions/manage",            post(manage_billing_subscription),        )        .route("/billing/monthly_spend", get(get_monthly_spend))        .route("/billing/usage", get(get_current_usage))} #[derive(Debug, Deserialize)]struct GetBillingPreferencesParams {    github_user_id: i32,} #[derive(Debug, Serialize)]struct BillingPreferencesResponse {    max_monthly_llm_usage_spending_in_cents: i32,} async fn get_billing_preferences(    Extension(app): Extension<Arc<AppState>>,    Query(params): Query<GetBillingPreferencesParams>,) -> Result<Json<BillingPreferencesResponse>> {    let user = app        .db        .get_user_by_github_user_id(params.github_user_id)        .await?        .ok_or_else(|| anyhow!("user not found"))?;     let preferences = app.db.get_billing_preferences(user.id).await?;     Ok(Json(BillingPreferencesResponse {        max_monthly_llm_usage_spending_in_cents: preferences            .map_or(DEFAULT_MAX_MONTHLY_SPEND.0 as i32, |preferences| {                preferences.max_monthly_llm_usage_spending_in_cents            }),    }))} #[derive(Debug, Deserialize)]struct UpdateBillingPreferencesBody {    github_user_id: i32,    max_monthly_llm_usage_spending_in_cents: i32,} async fn update_billing_preferences(    Extension(app): Extension<Arc<AppState>>,    Extension(rpc_server): Extension<Arc<crate::rpc::Server>>,    extract::Json(body): extract::Json<UpdateBillingPreferencesBody>,) -> Result<Json<BillingPreferencesResponse>> {    let user = app        .db        .get_user_by_github_user_id(body.github_user_id)        .await?        .ok_or_else(|| anyhow!("user not found"))?;     let max_monthly_llm_usage_spending_in_cents =        body.max_monthly_llm_usage_spending_in_cents.max(0);     let billing_preferences =        if let Some(_billing_preferences) = app.db.get_billing_preferences(user.id).await? {            app.db                .update_billing_preferences(                    user.id,                    &UpdateBillingPreferencesParams {                        max_monthly_llm_usage_spending_in_cents: ActiveValue::set(                            max_monthly_llm_usage_spending_in_cents,                        ),                    },                )                .await?        } else {            app.db                .create_billing_preferences(                    user.id,                    &crate::db::CreateBillingPreferencesParams {                        max_monthly_llm_usage_spending_in_cents,                    },                )                .await?        };     SnowflakeRow::new(        "Spend Limit Updated",        Some(user.metrics_id),        user.admin,        None,        json!({            "user_id": user.id,            "max_monthly_llm_usage_spending_in_cents": billing_preferences.max_monthly_llm_usage_spending_in_cents,        }),    )    .write(&app.kinesis_client, &app.config.kinesis_stream)    .await    .log_err();     rpc_server.refresh_llm_tokens_for_user(user.id).await;     Ok(Json(BillingPreferencesResponse {        max_monthly_llm_usage_spending_in_cents: billing_preferences            .max_monthly_llm_usage_spending_in_cents,    }))} #[derive(Debug, Deserialize)]struct ListBillingSubscriptionsParams {    github_user_id: i32,} #[derive(Debug, Serialize)]struct BillingSubscriptionJson {    id: BillingSubscriptionId,    name: String,    status: StripeSubscriptionStatus,    trial_end_at: Option<String>,    cancel_at: Option<String>,    /// Whether this subscription can be canceled.    is_cancelable: bool,} #[derive(Debug, Serialize)]struct ListBillingSubscriptionsResponse {    subscriptions: Vec<BillingSubscriptionJson>,} async fn list_billing_subscriptions(    Extension(app): Extension<Arc<AppState>>,    Query(params): Query<ListBillingSubscriptionsParams>,) -> Result<Json<ListBillingSubscriptionsResponse>> {    let user = app        .db        .get_user_by_github_user_id(params.github_user_id)        .await?        .ok_or_else(|| anyhow!("user not found"))?;     let subscriptions = app.db.get_billing_subscriptions(user.id).await?;     Ok(Json(ListBillingSubscriptionsResponse {        subscriptions: subscriptions            .into_iter()            .map(|subscription| BillingSubscriptionJson {                id: subscription.id,                name: match subscription.kind {                    Some(SubscriptionKind::ZedPro) => "Zed Pro".to_string(),                    Some(SubscriptionKind::ZedProTrial) => "Zed Pro (Trial)".to_string(),                    Some(SubscriptionKind::ZedFree) => "Zed Free".to_string(),                    None => "Zed LLM Usage".to_string(),                },                status: subscription.stripe_subscription_status,                trial_end_at: if subscription.kind == Some(SubscriptionKind::ZedProTrial) {                    maybe!({                        let end_at = subscription.stripe_current_period_end?;                        let end_at = DateTime::from_timestamp(end_at, 0)?;                         Some(end_at.to_rfc3339_opts(SecondsFormat::Millis, true))                    })                } else {                    None                },                cancel_at: subscription.stripe_cancel_at.map(|cancel_at| {                    cancel_at                        .and_utc()                        .to_rfc3339_opts(SecondsFormat::Millis, true)                }),                is_cancelable: subscription.stripe_subscription_status.is_cancelable()                    && subscription.stripe_cancel_at.is_none(),            })            .collect(),    }))} #[derive(Debug, Clone, Copy, Deserialize)]#[serde(rename_all = "snake_case")]enum ProductCode {    ZedPro,    ZedProTrial,} #[derive(Debug, Deserialize)]struct CreateBillingSubscriptionBody {    github_user_id: i32,    product: Option<ProductCode>,} #[derive(Debug, Serialize)]struct CreateBillingSubscriptionResponse {    checkout_session_url: String,} /// Initiates a Stripe Checkout session for creating a billing subscription.async fn create_billing_subscription(    Extension(app): Extension<Arc<AppState>>,    extract::Json(body): extract::Json<CreateBillingSubscriptionBody>,) -> Result<Json<CreateBillingSubscriptionResponse>> {    let user = app        .db        .get_user_by_github_user_id(body.github_user_id)        .await?        .ok_or_else(|| anyhow!("user not found"))?;     let Some(stripe_client) = app.stripe_client.clone() else {        log::error!("failed to retrieve Stripe client");        Err(Error::http(            StatusCode::NOT_IMPLEMENTED,            "not supported".into(),        ))?    };    let Some(stripe_billing) = app.stripe_billing.clone() else {        log::error!("failed to retrieve Stripe billing object");        Err(Error::http(            StatusCode::NOT_IMPLEMENTED,            "not supported".into(),        ))?    };    let Some(llm_db) = app.llm_db.clone() else {        log::error!("failed to retrieve LLM database");        Err(Error::http(            StatusCode::NOT_IMPLEMENTED,            "not supported".into(),        ))?    };     if app.db.has_active_billing_subscription(user.id).await? {        return Err(Error::http(            StatusCode::CONFLICT,            "user already has an active subscription".into(),        ));    }     let existing_billing_customer = app.db.get_billing_customer_by_user_id(user.id).await?;    if let Some(existing_billing_customer) = &existing_billing_customer {        if existing_billing_customer.has_overdue_invoices {            return Err(Error::http(                StatusCode::PAYMENT_REQUIRED,                "user has overdue invoices".into(),            ));        }    }     let customer_id = if let Some(existing_customer) = &existing_billing_customer {        CustomerId::from_str(&existing_customer.stripe_customer_id)            .context("failed to parse customer ID")?    } else {        let customer = Customer::create(            &stripe_client,            CreateCustomer {                email: user.email_address.as_deref(),                ..Default::default()            },        )        .await?;         customer.id    };     let success_url = format!(        "{}/account?checkout_complete=1",        app.config.zed_dot_dev_url()    );     let checkout_session_url = match body.product {        Some(ProductCode::ZedPro) => {            stripe_billing                .checkout_with_price(                    app.config.zed_pro_price_id()?,                    customer_id,                    &user.github_login,                    &success_url,                )                .await?        }        Some(ProductCode::ZedProTrial) => {            if let Some(existing_billing_customer) = &existing_billing_customer {                if existing_billing_customer.trial_started_at.is_some() {                    return Err(Error::http(                        StatusCode::FORBIDDEN,                        "user already used free trial".into(),                    ));                }            }             stripe_billing                .checkout_with_zed_pro_trial(                    app.config.zed_pro_price_id()?,                    customer_id,                    &user.github_login,                    &success_url,                )                .await?        }        None => {            let default_model = llm_db.model(                zed_llm_client::LanguageModelProvider::Anthropic,                "claude-3-7-sonnet",            )?;            let stripe_model = stripe_billing.register_model(default_model).await?;            stripe_billing                .checkout(customer_id, &user.github_login, &stripe_model, &success_url)                .await?        }    };     Ok(Json(CreateBillingSubscriptionResponse {        checkout_session_url,    }))} #[derive(Debug, PartialEq, Deserialize)]#[serde(rename_all = "snake_case")]enum ManageSubscriptionIntent {    /// The user intends to manage their subscription.    ///    /// This will open the Stripe billing portal without putting the user in a specific flow.    ManageSubscription,    /// The user intends to upgrade to Zed Pro.    UpgradeToPro,    /// The user intends to cancel their subscription.    Cancel,    /// The user intends to stop the cancellation of their subscription.    StopCancellation,} #[derive(Debug, Deserialize)]struct ManageBillingSubscriptionBody {    github_user_id: i32,    intent: ManageSubscriptionIntent,    /// The ID of the subscription to manage.    subscription_id: BillingSubscriptionId,} #[derive(Debug, Serialize)]struct ManageBillingSubscriptionResponse {    billing_portal_session_url: Option<String>,} /// Initiates a Stripe customer portal session for managing a billing subscription.async fn manage_billing_subscription(    Extension(app): Extension<Arc<AppState>>,    extract::Json(body): extract::Json<ManageBillingSubscriptionBody>,) -> Result<Json<ManageBillingSubscriptionResponse>> {    let user = app        .db        .get_user_by_github_user_id(body.github_user_id)        .await?        .ok_or_else(|| anyhow!("user not found"))?;     let Some(stripe_client) = app.stripe_client.clone() else {        log::error!("failed to retrieve Stripe client");        Err(Error::http(            StatusCode::NOT_IMPLEMENTED,            "not supported".into(),        ))?    };     let customer = app        .db        .get_billing_customer_by_user_id(user.id)        .await?        .ok_or_else(|| anyhow!("billing customer not found"))?;    let customer_id = CustomerId::from_str(&customer.stripe_customer_id)        .context("failed to parse customer ID")?;     let subscription = app        .db        .get_billing_subscription_by_id(body.subscription_id)        .await?        .ok_or_else(|| anyhow!("subscription not found"))?;    let subscription_id = SubscriptionId::from_str(&subscription.stripe_subscription_id)        .context("failed to parse subscription ID")?;     if body.intent == ManageSubscriptionIntent::StopCancellation {        let updated_stripe_subscription = Subscription::update(            &stripe_client,            &subscription_id,            stripe::UpdateSubscription {                cancel_at_period_end: Some(false),                ..Default::default()            },        )        .await?;         app.db            .update_billing_subscription(                subscription.id,                &UpdateBillingSubscriptionParams {                    stripe_cancel_at: ActiveValue::set(                        updated_stripe_subscription                            .cancel_at                            .and_then(|cancel_at| DateTime::from_timestamp(cancel_at, 0))                            .map(|time| time.naive_utc()),                    ),                    ..Default::default()                },            )            .await?;         return Ok(Json(ManageBillingSubscriptionResponse {            billing_portal_session_url: None,        }));    }     let flow = match body.intent {        ManageSubscriptionIntent::ManageSubscription => None,        ManageSubscriptionIntent::UpgradeToPro => {            let zed_pro_price_id = app.config.zed_pro_price_id()?;            let zed_free_price_id = app.config.zed_free_price_id()?;             let stripe_subscription =                Subscription::retrieve(&stripe_client, &subscription_id, &[]).await?;             let is_on_zed_pro_trial = stripe_subscription.status == SubscriptionStatus::Trialing                && stripe_subscription.items.data.iter().any(|item| {                    item.price                        .as_ref()                        .map_or(false, |price| price.id == zed_pro_price_id)                });            if is_on_zed_pro_trial {                // If the user is already on a Zed Pro trial and wants to upgrade to Pro, we just need to end their trial early.                Subscription::update(                    &stripe_client,                    &stripe_subscription.id,                    stripe::UpdateSubscription {                        trial_end: Some(stripe::Scheduled::now()),                        ..Default::default()                    },                )                .await?;                 return Ok(Json(ManageBillingSubscriptionResponse {                    billing_portal_session_url: None,                }));            }             let subscription_item_to_update = stripe_subscription                .items                .data                .iter()                .find_map(|item| {                    let price = item.price.as_ref()?;                     if price.id == zed_free_price_id {                        Some(item.id.clone())                    } else {                        None                    }                })                .ok_or_else(|| anyhow!("No subscription item to update"))?;             Some(CreateBillingPortalSessionFlowData {                type_: CreateBillingPortalSessionFlowDataType::SubscriptionUpdateConfirm,

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