use std::path::PathBuf;
use std::process::Command;

use tempfile::tempdir;

use vid_repair_core::config::Config;
use vid_repair_core::fix::{FixAction, FixKind, FixPlan};
use vid_repair_core::rules::RuleSet;
use vid_repair_core::scan::scan_file;
use vid_repair_core::{fix, ConfigOverrides};

fn command_available(cmd: &str) -> bool {
    Command::new(cmd)
        .arg("-version")
        .output()
        .map(|out| out.status.success())
        .unwrap_or(false)
}

fn fixture_dir() -> PathBuf {
    let manifest_dir = PathBuf::from(env!("CARGO_MANIFEST_DIR"));
    manifest_dir
        .parent()
        .expect("workspace root")
        .join("tests")
        .join("fixtures")
        .join("generated")
}

#[test]
fn remux_fix_succeeds_on_clean_fixture() {
    if !command_available("ffmpeg") || !command_available("ffprobe") {
        eprintln!("ffmpeg/ffprobe not available; skipping fix test");
        return;
    }

    let fixture = fixture_dir().join("clean.mp4");
    if !fixture.exists() {
        eprintln!("fixture not found: {}; skipping", fixture.display());
        return;
    }

    let temp = tempdir().expect("tempdir");

    let mut config = Config::default();
    let mut overrides = ConfigOverrides::default();
    overrides.output_dir = Some(temp.path().to_string_lossy().to_string());
    config.apply_overrides(&overrides);

    let ruleset_dir = fixture_dir()
        .parent()
        .unwrap()
        .parent()
        .unwrap()
        .parent()
        .unwrap()
        .join("rulesets");
    let ruleset = RuleSet::load_from_dir(&ruleset_dir).expect("ruleset load");

    let plan = FixPlan {
        policy: config.repair.policy,
        recommended: Some(FixKind::Remux),
        actions: vec![FixAction {
            kind: FixKind::Remux,
            command: Vec::new(),
            destructive: true,
        }],
        blocked_reason: None,
    };

    let outcome = fix::executor::apply_fix(&fixture, &plan, &config, &ruleset)
        .expect("apply fix");

    assert!(outcome.success, "Expected remux to succeed");
    let output_path = outcome.output_path.expect("output path");

    let scan = scan_file(PathBuf::from(output_path).as_path(), &config, &ruleset)
        .expect("scan output");
    assert!(scan.issues.is_empty(), "Output should be clean");
}