// Highlight-reel dispatcher — delegerer til synops-highlight CLI.
//
// Maskinrommet orkestrerer, CLI-verktøyet gjør jobben:
// henter transkripsjon, kaller AI for analyse, oppretter klipp-noder.
//
// Jobbtype: "highlight_extract"
// Payload: { "media_node_id": "<uuid>", "requested_by": "<uuid>",
//            "collection_id": "<uuid>" (valgfri) }
//
// Ref: docs/proposals/auto_highlight_reel.md
//      docs/retninger/unix_filosofi.md

use uuid::Uuid;

use crate::ai_admin;
use crate::cli_dispatch;
use crate::jobs::JobRow;

/// Synops-highlight binary path.
fn highlight_bin() -> String {
    std::env::var("SYNOPS_HIGHLIGHT_BIN")
        .unwrap_or_else(|_| "synops-highlight".to_string())
}

/// Handler for highlight_extract-jobber.
///
/// Spawner synops-highlight med --write for å gjøre alt arbeidet:
/// transkripsjonshenting, AI-analyse, klipp-node-opprettelse.
///
/// Payload forventer:
///   - media_node_id: UUID — episodenoden med transkripsjon
///   - requested_by: UUID — brukeren som utløste highlight-analysen
///   - collection_id: UUID (valgfri) — podcast-samling for belongs_to-edge
pub async fn handle_highlight_extract(
    job: &JobRow,
    db: &sqlx::PgPool,
) -> Result<serde_json::Value, String> {
    let media_node_id: Uuid = job
        .payload
        .get("media_node_id")
        .and_then(|v| v.as_str())
        .and_then(|s| s.parse().ok())
        .ok_or("Mangler gyldig media_node_id i payload")?;

    let requested_by: Uuid = job
        .payload
        .get("requested_by")
        .and_then(|v| v.as_str())
        .and_then(|s| s.parse().ok())
        .ok_or("Mangler gyldig requested_by i payload")?;

    let collection_id: Option<Uuid> = job
        .payload
        .get("collection_id")
        .and_then(|v| v.as_str())
        .and_then(|s| s.parse().ok());

    // Bygg kommando
    let bin = highlight_bin();
    let mut cmd = tokio::process::Command::new(&bin);

    cmd.arg("--media-node-id")
        .arg(media_node_id.to_string())
        .arg("--requested-by")
        .arg(requested_by.to_string())
        .arg("--write");

    if let Some(coll_id) = collection_id {
        cmd.arg("--collection-id").arg(coll_id.to_string());
    }

    // Sett miljøvariabler CLI-verktøyet trenger
    cli_dispatch::set_database_url(&mut cmd)?;
    cli_dispatch::forward_env(&mut cmd, "AI_GATEWAY_URL");
    cli_dispatch::forward_env(&mut cmd, "LITELLM_MASTER_KEY");

    // Modellalias fra ai_job_routing — admin kan endre uten redeploy
    let model_alias = ai_admin::resolve_routing_or_default(db, "highlight").await;
    cmd.env("AI_HIGHLIGHT_MODEL", &model_alias);

    tracing::info!(
        media_node_id = %media_node_id,
        requested_by = %requested_by,
        collection_id = ?collection_id,
        bin = %bin,
        "Starter synops-highlight"
    );

    let result = cli_dispatch::run_cli_tool(&bin, &mut cmd).await?;

    tracing::info!(
        media_node_id = %media_node_id,
        clips_created = result["clips_created"].as_u64().unwrap_or(0),
        highlights_found = result["highlights_found"].as_u64().unwrap_or(0),
        status = result["status"].as_str().unwrap_or("unknown"),
        "synops-highlight fullført"
    );

    Ok(result)
}