<?php
// V37 Opus - Auto-cleanup blade tasks dispatched > 10min = zombies
// Doctrine #4 HONNETE + #13 cause racine + #7 zero manuel
header("Content-Type: application/json");

$TASKS_DIR = "/var/www/html/api/blade-tasks";
$TIMEOUT_MINUTES = (int)($_GET["timeout_min"] ?? 10);
$DRY = isset($_GET["dry"]);

$now = time();
$cutoff = $now - ($TIMEOUT_MINUTES * 60);
$results = ["timed_out" => [], "kept" => 0, "failed_marked" => 0];

foreach (glob($TASKS_DIR . "/task_*.json") as $tf) {
    $td = @json_decode(file_get_contents($tf), true);
    if (!$td) continue;
    if (($td["status"] ?? "") !== "dispatched") { $results["kept"]++; continue; }
    
    $disp = $td["dispatched_at"] ?? $td["created"] ?? "";
    $t = $disp ? strtotime($disp) : 0;
    if (!$t || $t > $cutoff) { $results["kept"]++; continue; }
    
    $results["timed_out"][] = [
        "id" => $td["id"] ?? basename($tf),
        "dispatched_at" => $disp,
        "age_min" => round(($now - $t) / 60, 1),
        "label" => $td["label"] ?? "?"
    ];
    
    if (!$DRY) {
        $td["status"] = "failed_timeout";
        $td["failed_at"] = date("c");
        $td["error"] = "Agent Blade did not callback task_done within {$TIMEOUT_MINUTES}min";
        file_put_contents($tf, json_encode($td, JSON_PRETTY_PRINT));
        $results["failed_marked"]++;
    }
}

// Summary + agent health assessment
$last_done = 0;
foreach (glob($TASKS_DIR . "/task_*.json") as $tf) {
    $td = @json_decode(file_get_contents($tf), true);
    if (($td["status"] ?? "") === "done") {
        $c = strtotime($td["completed_at"] ?? "1970-01-01");
        if ($c > $last_done) $last_done = $c;
    }
}
$agent_stale_hours = $last_done ? round(($now - $last_done) / 3600, 1) : 9999;

echo json_encode([
    "ok" => true,
    "v" => "V37-blade-autoheal",
    "ts" => date("c"),
    "dry_run" => $DRY,
    "timeout_minutes" => $TIMEOUT_MINUTES,
    "stats" => $results,
    "agent_health" => [
        "last_done_ts" => $last_done ? date("c", $last_done) : null,
        "stale_hours" => $agent_stale_hours,
        "agent_execution_ok" => $agent_stale_hours < 1,
        "verdict" => $agent_stale_hours < 1 ? "HEALTHY" : ($agent_stale_hours < 24 ? "DEGRADED" : "BROKEN")
    ]
], JSON_PRETTY_PRINT);