systemprompt-cli 0.30.1

//! `analytics costs summary` command.
//!
//! Copyright (c) systemprompt.io — Business Source License 1.1.
//! See <https://systemprompt.io> for licensing details.

use anyhow::Result;
use chrono::{DateTime, Duration, Utc};
use clap::Args;
use std::future::Future;
use std::path::PathBuf;
use systemprompt_analytics::CostAnalyticsRepository;
use systemprompt_analytics::models::reporting::CostSummaryRow;
use systemprompt_logging::CliService;
use systemprompt_runtime::DatabaseContext;

use super::CostSummaryOutput;
use crate::CliConfig;
use crate::commands::analytics::shared::{
    export_single_to_csv, parse_time_range, resolve_export_path,
};
use crate::shared::CommandOutput;

#[derive(Debug, Args)]
pub struct SummaryArgs {
    #[arg(
        long,
        alias = "from",
        help = "Time range (e.g., '1h', '24h', '7d'). Defaults to 24h, widening to 7d then 30d \
                while that window holds no requests."
    )]
    pub since: Option<String>,

    #[arg(long, alias = "to", help = "End time for range")]
    pub until: Option<String>,

    #[arg(long, help = "Export results to CSV file")]
    pub export: Option<PathBuf>,
}

pub(super) async fn execute_with_pool(
    args: SummaryArgs,
    db_ctx: &DatabaseContext,
    _config: &CliConfig,
) -> Result<CommandOutput> {
    let repo = CostAnalyticsRepository::new(db_ctx.db_pool())?;
    execute_internal(args, &repo).await
}

#[derive(Debug, Clone, Copy)]
pub struct ResolvedWindow {
    pub start: DateTime<Utc>,
    pub end: DateTime<Utc>,
    pub summary: CostSummaryRow,
    pub widened_to: Option<&'static str>,
}

const WIDEN_LADDER: [(&str, i64); 2] = [("7d", 7), ("30d", 30)];

pub async fn resolve_window<F, Fut>(
    since: Option<&String>,
    until: Option<&String>,
    fetch: F,
) -> Result<ResolvedWindow>
where
    F: Fn(DateTime<Utc>, DateTime<Utc>) -> Fut,
    Fut: Future<Output = Result<CostSummaryRow>>,
{
    let (start, end) = parse_time_range(since, until)?;
    let summary = fetch(start, end).await?;

    let explicit = since.is_some() || until.is_some();
    if explicit || summary.requests > 0 {
        return Ok(ResolvedWindow {
            start,
            end,
            summary,
            widened_to: None,
        });
    }

    for (label, days) in WIDEN_LADDER {
        let widened_start = end - Duration::days(days);
        let widened = fetch(widened_start, end).await?;
        if widened.requests > 0 {
            return Ok(ResolvedWindow {
                start: widened_start,
                end,
                summary: widened,
                widened_to: Some(label),
            });
        }
    }

    Ok(ResolvedWindow {
        start,
        end,
        summary,
        widened_to: None,
    })
}

async fn execute_internal(
    args: SummaryArgs,
    repo: &CostAnalyticsRepository,
) -> Result<CommandOutput> {
    let ResolvedWindow {
        start,
        end,
        summary: current,
        widened_to,
    } = resolve_window(
        args.since.as_ref(),
        args.until.as_ref(),
        |start, end| async move { repo.get_summary(start, end).await.map_err(Into::into) },
    )
    .await?;

    let period_duration = end - start;
    let prev_start = start - period_duration;

    let previous = repo.get_previous_cost(prev_start, start).await?;

    let total_cost = current.cost.unwrap_or(0);
    let prev_cost = previous.cost.unwrap_or(0);
    let change_percent = if prev_cost > 0 {
        Some(((total_cost - prev_cost) as f64 / prev_cost as f64) * 100.0)
    } else {
        None
    };

    let avg_cost = if current.requests > 0 {
        total_cost as f64 / current.requests as f64
    } else {
        0.0
    };

    let output = CostSummaryOutput {
        period: format!(
            "{} to {}",
            start.format("%Y-%m-%d %H:%M"),
            end.format("%Y-%m-%d %H:%M")
        ),
        total_cost_microdollars: total_cost,
        total_requests: current.requests,
        total_tokens: current.tokens.unwrap_or(0),
        avg_cost_per_request_microdollars: avg_cost,
        change_percent,
        auto_widened_to: widened_to.map(str::to_owned),
    };

    if let Some(ref path) = args.export {
        let resolved_path = resolve_export_path(path)?;
        export_single_to_csv(&output, &resolved_path)?;
        CliService::success(&format!("Exported to {}", resolved_path.display()));
        return Ok(CommandOutput::card_value("Cost Summary", &output).with_skip_render());
    }

    Ok(CommandOutput::card_value("Cost Summary", &output))
}