<?php
// V118 KPI UNIFIED - Single source-of-truth endpoint for all dashboards
// Consolidates source-of-truth.json + nonreg-latest + token-health-cache + docker live
// Cache 60s for performance
// UX premium doctrine 60 - zero doublon zero divergence
header("Content-Type: application/json");
header("Access-Control-Allow-Origin: *");
header("Cache-Control: public, max-age=60");

$cache_file = "/tmp/kpi-unified-cache.json";
$cache_ttl = 60;
$force = !empty($_GET["force"]);

// Try cache first
if (!$force && is_readable($cache_file)) {
    $age = time() - filemtime($cache_file);
    if ($age < $cache_ttl) {
        $cached = @json_decode(@file_get_contents($cache_file), true);
        if (is_array($cached)) {
            $cached["cache_hit"] = true;
            $cached["cache_age_sec"] = $age;
            echo json_encode($cached, JSON_PRETTY_PRINT);
            exit;
        }
    }
}

// Build from sources (honest, no fake)
$sot = [];
if (is_readable("/var/www/html/api/source-of-truth.json")) {
    $sot = @json_decode(@file_get_contents("/var/www/html/api/source-of-truth.json"), true) ?: [];
}

$nonreg = [];
if (is_readable("/var/www/html/api/nonreg-latest.json")) {
    $nonreg = @json_decode(@file_get_contents("/var/www/html/api/nonreg-latest.json"), true) ?: [];
}

$tokens = [];
if (is_readable("/tmp/token-health-cache.json")) {
    $tokens = @json_decode(@file_get_contents("/tmp/token-health-cache.json"), true) ?: [];
}

// Docker running count (live via shell)
$docker_count = 0;
$out = @shell_exec("docker ps 2>/dev/null | tail -n +2 | wc -l");
if ($out !== null) $docker_count = (int)trim($out);
if ($docker_count === 0 && isset($sot["docker_running"])) $docker_count = (int)$sot["docker_running"];

// V83 summary (via architecture_quality)
$v83 = ["kpis" => null, "ok" => null, "warn" => null, "fail" => null, "complete_pct" => null];
if (is_readable("/var/www/html/api/v83-business-kpi-latest.json")) {
    $v83_raw = @json_decode(@file_get_contents("/var/www/html/api/v83-business-kpi-latest.json"), true);
    if ($v83_raw && isset($v83_raw["summary"])) {
        $v83 = [
            "kpis" => $v83_raw["summary"]["total_kpis"] ?? null,
            "ok" => $v83_raw["summary"]["ok"] ?? null,
            "warn" => $v83_raw["summary"]["warn"] ?? null,
            "fail" => $v83_raw["summary"]["fail"] ?? null,
            "complete_pct" => $v83_raw["summary"]["data_completeness_pct"] ?? null
        ];
    }
}

// Orphans (from V83 architecture_quality KPI)
$orphans_count = 0;
if (is_readable("/tmp/wevia-pages-registry-cache.json")) {
    $reg = @json_decode(@file_get_contents("/tmp/wevia-pages-registry-cache.json"), true);
    if ($reg && isset($reg["orphans"])) $orphans_count = (int)$reg["orphans"];
}

// Build unified schema (SINGLE SOURCE OF TRUTH)
$response = [
    "ok" => true,
    "version" => "v118-kpi-unified",
    "doctrine" => "zero doublon single source-of-truth",
    "ts" => date("c"),
    "cache_hit" => false,
    "cache_ttl_sec" => $cache_ttl,
    
    "providers" => [
        "total" => $sot["providers_count"] ?? ($sot["counts"]["providers"] ?? 0),
        "ok" => $tokens["summary"]["live_ok"] ?? null,
        "expired" => $tokens["summary"]["expired_ko"] ?? null,
        "health_pct" => $tokens["summary"]["health_pct"] ?? null
    ],
    
    "agents" => [
        "active" => $sot["agents_count"] ?? 0,
        "total_live" => $sot["counts"]["agents_total_live"] ?? ($sot["agents_total"] ?? 0)
    ],
    
    "skills" => [
        "count" => $sot["skills_count"] ?? 0,
        "total" => $sot["skills_total"] ?? ($sot["counts"]["skills_total"] ?? 0)
    ],
    
    "intents" => [
        "count" => $sot["intents_count"] ?? ($sot["counts"]["intents"] ?? 0),
        "total" => $sot["intents_total"] ?? 0
    ],
    
    "docker" => [
        "running" => $docker_count
    ],
    
    "orphans" => [
        "count" => $orphans_count,
        "status" => ($orphans_count === 0) ? "ok" : "warn"
    ],
    
    "nonreg" => [
        "pass" => $nonreg["pass"] ?? 0,
        "fail" => $nonreg["fail"] ?? 0,
        "total" => ($nonreg["pass"] ?? 0) + ($nonreg["fail"] ?? 0),
        "score" => $nonreg["score"] ?? 0,
        "ts" => $nonreg["ts"] ?? null
    ],
    
    "v83" => $v83,
    
    "autonomy" => [
        "score" => $sot["autonomy_score"] ?? 0,
        "level" => $sot["autonomy_level"] ?? "UNKNOWN"
    ],
    
    "qdrant" => [
        "collections" => $sot["counts"]["qdrant_cols"] ?? 0,
        "points" => $sot["counts"]["qdrant_points"] ?? 0
    ],
    
    "dashboards" => [
        "count" => $sot["dashboards_count"] ?? ($sot["counts"]["dashboards"] ?? 0)
    ],
    
    "brains" => [
        "count" => $sot["brains_count"] ?? ($sot["counts"]["brains"] ?? 0)
    ],
    
    "doctrines" => [
        "count" => $sot["doctrines_count"] ?? ($sot["counts"]["doctrines"] ?? 0)
    ],
    
    "business" => [
        "cash_collected_month_keur" => $sot["cash_collected_month_keur"] ?? 0,
        "cash_collected_ytd_keur" => $sot["cash_collected_ytd_keur"] ?? 0,
        "cash_target_month_keur" => $sot["cash_target_month_keur"] ?? 0,
        "dso_days" => $sot["dso_days"] ?? 0
    ],
    
    "ethica" => [
        "total_hcps" => $sot["ethica_total"] ?? 0
    ],
    
    "sources_used" => [
        "source_of_truth_json" => !empty($sot),
        "nonreg_latest" => !empty($nonreg),
        "token_health_cache" => !empty($tokens),
        "v83_latest" => ($v83["kpis"] !== null),
        "docker_live" => ($docker_count > 0)
    ]
];

// Write cache
@file_put_contents($cache_file, json_encode($response, JSON_PRETTY_PRINT));

echo json_encode($response, JSON_PRETTY_PRINT);