<?php
/**
 * Module documentation MS1 — overlay paginé HTML (distinct de info / info_aide).
 *
 * Clés d'appel (doc_anchor_clef) → module (doc_mod_clef) → pages (doc_page).
 * Usage :
 *   fxDocRenderModule('bib_v4_assign_doc');     — overlay complet
 *   fxDocRenderTrigger('bib_v4_assign_doc');    — bouton ? seul
 *   afficheDocPage('bib_doc_overview');         — HTML d'une page (comme afficheTexte)
 *   afficheDocTitre('bib_doc_overview');        — titre d'une page
 */

/** Échappement attributs HTML doc module. */
function fxDocEsc($str) {
    return htmlspecialchars((string)$str, ENT_QUOTES, 'UTF-8');
}

/** Page PHP courante pour doc_prg (miroir fxBibInfoPage / info_prg). */
function fxDocPrg($mem_global = 0) {
    global $vPage;

    if ($mem_global == 1) {
        return 'global';
    }

    return !empty($vPage) ? $vPage : 'compte.php';
}

/** Langue courante doc. */
function fxDocLangue() {
    global $strLangue;

    return !empty($strLangue) ? $strLangue : 'fr';
}

/** Tables doc_* présentes en BD (évite erreur si SQL module pas encore exécuté). */
function fxDocSchemaReady() {
    global $objDatabase;

    static $blnReady = null;

    if ($blnReady !== null) {
        return $blnReady;
    }

    if (!isset($objDatabase)) {
        $blnReady = false;
        return false;
    }

    $qry = $objDatabase->fxQuery("SHOW TABLES LIKE 'doc_page'");
    $blnReady = ($qry && mysqli_num_rows($qry) > 0);
    return $blnReady;
}

/**
 * Charge en mémoire toutes les pages doc pour une page PHP (comme obtenirTextepage).
 * Remplit $vdoc_page[doc_page_clef] = row.
 */
function obtenirDocPage($page = null, $langue = null) {
    global $objDatabase, $vdoc_page;

    if ($page === null || $page === '') {
        $page = fxDocPrg(0);
    }
    if ($langue === null || $langue === '') {
        $langue = fxDocLangue();
    }

    $vdoc_page = array();

    if (!isset($objDatabase) || !fxDocSchemaReady()) {
        return $vdoc_page;
    }

    $sql = "SELECT *
            FROM doc_page
            WHERE doc_actif = 1
            AND doc_langue = '" . $objDatabase->fxEscape($langue) . "'
            AND doc_prg IN ('" . $objDatabase->fxEscape($page) . "', 'global')
            ORDER BY doc_tri, pk_doc_page";
    $rows = $objDatabase->fxGetResults($sql);

    if (!is_array($rows)) {
        return $vdoc_page;
    }

    for ($i = 1; $i <= count($rows); $i++) {
        if (!empty($rows[$i]['doc_page_clef'])) {
            $vdoc_page[$rows[$i]['doc_page_clef']] = $rows[$i];
        }
    }

    return $vdoc_page;
}

/** Ligne doc_anchor par clé d'appel. */
function fxDocGetAnchorRow($clef, $mem_global = 0) {
    global $objDatabase;

    static $anchorCache = array();

    $strPrg = fxDocPrg($mem_global);
    $cacheKey = $clef . '|' . $strPrg;

    if (array_key_exists($cacheKey, $anchorCache)) {
        return $anchorCache[$cacheKey];
    }

    if (!isset($objDatabase) || $clef === '' || !fxDocSchemaReady()) {
        $anchorCache[$cacheKey] = array();
        return $anchorCache[$cacheKey];
    }

    $sql = "SELECT *
            FROM doc_anchor
            WHERE doc_actif = 1
            AND doc_anchor_clef = '" . $objDatabase->fxEscape($clef) . "'
            AND doc_prg IN ('" . $objDatabase->fxEscape($strPrg) . "', 'global')
            ORDER BY FIELD(doc_prg, '" . $objDatabase->fxEscape($strPrg) . "', 'global')
            LIMIT 1";
    $row = $objDatabase->fxGetRow($sql);
    $anchorCache[$cacheKey] = is_array($row) ? $row : array();

    return $anchorCache[$cacheKey];
}

/** Résout doc_mod_clef depuis une clé d'ancre ou un code module direct. */
function fxDocResolveModClef($clef, $mem_global = 0) {
    $anchor = fxDocGetAnchorRow($clef, $mem_global);

    if (!empty($anchor['doc_mod_clef'])) {
        return $anchor['doc_mod_clef'];
    }

    return $clef;
}

/** Pages actives d'un module, triées (pour carrousel overlay). */
function fxDocGetModulePages($modClef, $langue = null, $mem_global = 0) {
    global $objDatabase, $vdoc_page;

    if ($langue === null || $langue === '') {
        $langue = fxDocLangue();
    }

    $strPrg = fxDocPrg($mem_global);
    $modClef = fxDocResolveModClef($modClef, $mem_global);

    if (!isset($objDatabase) || $modClef === '' || !fxDocSchemaReady()) {
        return array();
    }

    $sql = "SELECT *
            FROM doc_page
            WHERE doc_actif = 1
            AND doc_mod_clef = '" . $objDatabase->fxEscape($modClef) . "'
            AND doc_langue = '" . $objDatabase->fxEscape($langue) . "'
            AND doc_prg IN ('" . $objDatabase->fxEscape($strPrg) . "', 'global')
            ORDER BY doc_tri, pk_doc_page";
    $rows = $objDatabase->fxGetResults($sql);

    $pages = array();
    if (!is_array($rows)) {
        return $pages;
    }

    for ($i = 1; $i <= count($rows); $i++) {
        $pages[] = $rows[$i];
        if (!empty($rows[$i]['doc_page_clef'])) {
            if (!isset($vdoc_page) || !is_array($vdoc_page)) {
                $vdoc_page = array();
            }
            $vdoc_page[$rows[$i]['doc_page_clef']] = $rows[$i];
        }
    }

    return $pages;
}

/** Une page par doc_page_clef (mémoire ou BD). */
function fxDocGetPageRow($clef, $mem_global = 0) {
    global $vdoc_page, $objDatabase;

    if (!empty($vdoc_page[$clef])) {
        return $vdoc_page[$clef];
    }

    if (!isset($objDatabase) || $clef === '' || !fxDocSchemaReady()) {
        return array();
    }

    $strPrg = fxDocPrg($mem_global);
    $langue = fxDocLangue();

    static $pageCache = array();
    $cacheKey = $clef . '|' . $langue . '|' . $strPrg;

    if (array_key_exists($cacheKey, $pageCache)) {
        return $pageCache[$cacheKey];
    }

    $sql = "SELECT *
            FROM doc_page
            WHERE doc_actif = 1
            AND doc_page_clef = '" . $objDatabase->fxEscape($clef) . "'
            AND doc_langue = '" . $objDatabase->fxEscape($langue) . "'
            AND doc_prg IN ('" . $objDatabase->fxEscape($strPrg) . "', 'global')
            ORDER BY FIELD(doc_prg, '" . $objDatabase->fxEscape($strPrg) . "', 'global')
            LIMIT 1";
    $row = $objDatabase->fxGetRow($sql);
    $pageCache[$cacheKey] = is_array($row) ? $row : array();

    return $pageCache[$cacheKey];
}

/** Crée une page doc vide si absente (miroir afficheTexte). */
function fxDocEnsurePage($clef, $mem_global = 0, $modClef = '') {
    global $objDatabase;

    $row = fxDocGetPageRow($clef, $mem_global);
    if (!empty($row)) {
        return $row;
    }

    $strPrg = fxDocPrg($mem_global);
    $langue = fxDocLangue();

    if ($modClef === '') {
        $modClef = $clef;
    }

    $tabData = array(
        'doc_mod_clef' => $modClef,
        'doc_page_clef' => $clef,
        'doc_langue' => $langue,
        'doc_titre' => $clef,
        'doc_sous_titre' => '',
        'doc_html' => '',
        'doc_prg' => $strPrg,
        'doc_tri' => 0,
        'doc_actif' => 1,
    );
    fxSetDocPage('add', $tabData);

    if ($langue === 'fr') {
        $tabDataEn = $tabData;
        $tabDataEn['doc_langue'] = 'en';
        fxSetDocPage('add', $tabDataEn);
    }

    return fxDocGetPageRow($clef, $mem_global);
}

/**
 * Titre doc_titre — équivalent afficheTexte pour doc_page.
 */
function afficheDocTitre($clef, $mem_echo = 1, $mem_global = 0, $modClef = '') {
    $row = fxDocGetPageRow($clef, $mem_global);

    if (empty($row)) {
        fxDocEnsurePage($clef, $mem_global, $modClef);
        $row = fxDocGetPageRow($clef, $mem_global);
    }

    $str = trim($row['doc_titre'] ?? '');
    if ($str === '' || $str === $clef) {
        $str = '*' . $clef . '*';
    }

    if ($mem_echo == 1) {
        echo fxDocEsc($str);
    }

    return $str;
}

/**
 * Corps HTML doc_html — équivalent afficheAide (contenu long, HTML admin).
 */
function afficheDocHtml($clef, $mem_echo = 1, $mem_global = 0, $modClef = '') {
    $row = fxDocGetPageRow($clef, $mem_global);

    if (empty($row)) {
        fxDocEnsurePage($clef, $mem_global, $modClef);
        $row = fxDocGetPageRow($clef, $mem_global);
    }

    $str = $row['doc_html'] ?? '';

    if ($mem_echo == 1) {
        echo $str;
    }

    return $str;
}

/** Sous-titre doc_sous_titre. */
function afficheDocSousTitre($clef, $mem_echo = 1, $mem_global = 0, $modClef = '') {
    $row = fxDocGetPageRow($clef, $mem_global);

    if (empty($row)) {
        fxDocEnsurePage($clef, $mem_global, $modClef);
        $row = fxDocGetPageRow($clef, $mem_global);
    }

    $str = trim($row['doc_sous_titre'] ?? '');

    if ($mem_echo == 1) {
        echo fxDocEsc($str);
    }

    return $str;
}

/** URL pop-up doc_edition.php — module documentation paginé. */
function fxAdminDocUrl($anchorClef, $mem_global = 0) {
    global $vDomaine, $vPage;

    $strPrg = fxDocPrg($mem_global);
    $modClef = fxDocResolveModClef($anchorClef, $mem_global);

    return $vDomaine . '/php/doc_edition.php?' . http_build_query(array(
        'anchor' => $anchorClef,
        'mod' => $modClef,
        'prg' => $strPrg,
        'bd' => 'client',
        'page' => !empty($vPage) ? $vPage : 'compte.php',
    ));
}

/** Lien crayon doc_edition.php — superadm dev/préprod + switch Textes ON. */
function fxAdminDocButton($anchorClef, $mem_global = 0) {
    if (!fxAdminTextEditModeActive() || trim($anchorClef) === '') {
        return '';
    }

    return '<a href="' . fxDocEsc(fxAdminDocUrl($anchorClef, $mem_global)) . '"'
        . ' class="' . fxAdminTradLinkClass() . ' ms1-doc-edit-link"'
        . ' title="Modifier le guide documentation"'
        . ' aria-label="Modifier le guide documentation">'
        . '<i class="fa fa-book" aria-hidden="true"></i>'
        . '</a>';
}

/** Bouton ? pour ouvrir le module doc (clé doc_anchor_clef) — même rond que btn-aide-bib. */
function fxDocRenderTrigger($anchorClef, $mem_global = 0, $strAriaLabel = 'Documentation') {
    $modClef = fxDocResolveModClef($anchorClef, $mem_global);

    return '<button type="button"'
        . ' class="btn-aide-bib ms1-doc-trigger btn-doc-trigger"'
        . ' data-doc-anchor="' . fxDocEsc($anchorClef) . '"'
        . ' data-doc-mod="' . fxDocEsc($modClef) . '"'
        . ' aria-label="' . fxDocEsc($strAriaLabel) . '"'
        . ' aria-haspopup="dialog">?</button>';
}

/** Panneau overlay paginé pour un module (clé doc_anchor_clef ou doc_mod_clef). */
function fxDocRenderModule($anchorClef, $mem_global = 0) {
    $modClef = fxDocResolveModClef($anchorClef, $mem_global);
    $pages = fxDocGetModulePages($modClef, null, $mem_global);

    if (empty($pages)) {
        return '';
    }

    $overlayId = 'ms1-doc-overlay-' . preg_replace('/[^a-z0-9_-]/i', '-', $anchorClef);

    $html = '<div id="' . fxDocEsc($overlayId) . '"'
        . ' class="ms1-doc-overlay"'
        . ' data-doc-anchor="' . fxDocEsc($anchorClef) . '"'
        . ' data-doc-mod="' . fxDocEsc($modClef) . '"'
        . ' hidden'
        . ' role="dialog"'
        . ' aria-modal="true"'
        . ' aria-labelledby="' . fxDocEsc($overlayId) . '-title">';

    $html .= '<div class="ms1-doc-backdrop" data-ms1-doc-close="1"></div>';

    $html .= '<div class="ms1-doc-panel">';
    $html .= '<header class="ms1-doc-header">';
    $html .= '<div class="ms1-doc-header-text">';
    $html .= '<h2 class="ms1-doc-title" id="' . fxDocEsc($overlayId) . '-title"></h2>';
    $html .= '<p class="ms1-doc-subtitle"></p>';
    $html .= '</div>';
    $html .= '<div class="ms1-doc-header-actions">';
    $html .= fxAdminDocButton($anchorClef, $mem_global);
    $html .= '<button type="button" class="ms1-doc-close" data-ms1-doc-close="1" aria-label="Fermer">&times;</button>';
    $html .= '</div>';
    $html .= '</header>';

    $html .= '<div class="ms1-doc-body">';
    foreach ($pages as $idx => $page) {
        $hidden = $idx > 0 ? ' hidden' : '';
        $html .= '<div class="ms1-doc-page' . $hidden . '"'
            . ' data-doc-page-index="' . (int)$idx . '"'
            . ' data-doc-page-clef="' . fxDocEsc($page['doc_page_clef']) . '">';
        $html .= '<div class="ms1-doc-content ms1-doc-format">' . ($page['doc_html'] ?? '') . '</div>';
        $html .= '</div>';
    }
    $html .= '</div>';

    $html .= '<footer class="ms1-doc-footer">';
    $html .= '<div class="ms1-doc-nav-dots">';
    foreach ($pages as $idx => $page) {
        $active = $idx === 0 ? ' is-active' : '';
        $label = trim($page['doc_titre'] ?? '') !== '' ? $page['doc_titre'] : (string)($idx + 1);
        $html .= '<button type="button"'
            . ' class="ms1-doc-dot' . $active . '"'
            . ' data-doc-page-index="' . (int)$idx . '"'
            . ' title="' . fxDocEsc($label) . '"'
            . ' aria-label="' . fxDocEsc($label) . '">'
            . (int)($idx + 1)
            . '</button>';
    }
    $html .= '</div>';
    $html .= '<div class="ms1-doc-nav-arrows">';
    $html .= '<button type="button" class="ms1-doc-prev" data-ms1-doc-prev="1">Précédent</button>';
    $html .= '<span class="ms1-doc-counter"><span class="ms1-doc-counter-current">1</span> / <span class="ms1-doc-counter-total">' . count($pages) . '</span></span>';
    $html .= '<button type="button" class="ms1-doc-next" data-ms1-doc-next="1">Suivant</button>';
    $html .= '</div>';
    $html .= '</footer>';

    $html .= '</div></div>';

  // Métadonnées titres pour JS (init header sans parser le HTML)
    $html .= '<script type="application/json" class="ms1-doc-meta" data-doc-anchor="' . fxDocEsc($anchorClef) . '">';
    $meta = array();
    foreach ($pages as $page) {
        $meta[] = array(
            'clef' => $page['doc_page_clef'],
            'titre' => $page['doc_titre'] ?? '',
            'sous_titre' => $page['doc_sous_titre'] ?? '',
        );
    }
    $html .= json_encode($meta, JSON_UNESCAPED_UNICODE);
    $html .= '</script>';

    return $html;
}

/** Trigger + overlay (appel typique à côté d'un titre de bloc). */
function fxDocRenderBlock($anchorClef, $mem_global = 0, $strAriaLabel = 'Documentation') {
    return fxDocRenderTrigger($anchorClef, $mem_global, $strAriaLabel) . fxDocRenderModule($anchorClef, $mem_global);
}

function fxSetDocMod($strAction, $tabData, $id = 0) {
    global $objDatabase;

    switch ($strAction) {
        case 'add':
            $tabFieldsValues = fxListFieldsValues($tabData, 'pk_doc_mod', 'doc_mod', $GLOBALS['arrConDatabaseMain']['db']);
            $sqlValide = "SELECT COUNT(doc_mod_clef) FROM doc_mod
                WHERE doc_mod_clef = '" . $objDatabase->fxEscape($tabData['doc_mod_clef']) . "'
                AND doc_mod_prg = '" . $objDatabase->fxEscape($tabData['doc_mod_prg']) . "'";
            if ((int)$objDatabase->fxGetVar($sqlValide) > 0) {
                break;
            }
            $sqlInsert = "INSERT INTO doc_mod " . $tabFieldsValues['set'] . ', doc_mod_creation = NOW()';
            $objDatabase->fxQuery($sqlInsert);
            break;

        case 'mod':
            $tabFieldsValues = fxListFieldsValues($tabData, 'pk_doc_mod', 'doc_mod', $GLOBALS['arrConDatabaseMain']['db']);
            $sqlUpdate = "UPDATE doc_mod " . $tabFieldsValues['set'] . ", doc_mod_maj = NOW() WHERE " . $tabFieldsValues['key'];
            $objDatabase->fxQuery($sqlUpdate);
            break;
    }
}

function fxSetDocPage($strAction, $tabData, $id = 0) {
    global $objDatabase;

    switch ($strAction) {
        case 'add':
            $tabFieldsValues = fxListFieldsValues($tabData, 'pk_doc_page', 'doc_page', $GLOBALS['arrConDatabaseMain']['db']);
            $sqlValide = "SELECT COUNT(doc_page_clef) FROM doc_page
                WHERE doc_page_clef = '" . $objDatabase->fxEscape($tabData['doc_page_clef']) . "'
                AND doc_langue = '" . $objDatabase->fxEscape($tabData['doc_langue']) . "'
                AND doc_prg = '" . $objDatabase->fxEscape($tabData['doc_prg']) . "'";
            if ((int)$objDatabase->fxGetVar($sqlValide) > 0) {
                break;
            }
            $sqlInsert = "INSERT INTO doc_page " . $tabFieldsValues['set'] . ', doc_creation = NOW()';
            $objDatabase->fxQuery($sqlInsert);
            break;

        case 'mod':
            $tabFieldsValues = fxListFieldsValues($tabData, 'pk_doc_page', 'doc_page', $GLOBALS['arrConDatabaseMain']['db']);
            $sqlUpdate = "UPDATE doc_page " . $tabFieldsValues['set'] . ", doc_maj = NOW() WHERE " . $tabFieldsValues['key'];
            $objDatabase->fxQuery($sqlUpdate);
            break;
    }
}

function fxSetDocAnchor($strAction, $tabData, $id = 0) {
    global $objDatabase;

    switch ($strAction) {
        case 'add':
            $tabFieldsValues = fxListFieldsValues($tabData, 'pk_doc_anchor', 'doc_anchor', $GLOBALS['arrConDatabaseMain']['db']);
            $sqlValide = "SELECT COUNT(doc_anchor_clef) FROM doc_anchor
                WHERE doc_anchor_clef = '" . $objDatabase->fxEscape($tabData['doc_anchor_clef']) . "'
                AND doc_prg = '" . $objDatabase->fxEscape($tabData['doc_prg']) . "'";
            if ((int)$objDatabase->fxGetVar($sqlValide) > 0) {
                break;
            }
            $sqlInsert = "INSERT INTO doc_anchor " . $tabFieldsValues['set'] . ', doc_creation = NOW()';
            $objDatabase->fxQuery($sqlInsert);
            break;

        case 'mod':
            $tabFieldsValues = fxListFieldsValues($tabData, 'pk_doc_anchor', 'doc_anchor', $GLOBALS['arrConDatabaseMain']['db']);
            $sqlUpdate = "UPDATE doc_anchor " . $tabFieldsValues['set'] . " WHERE " . $tabFieldsValues['key'];
            $objDatabase->fxQuery($sqlUpdate);
            break;
    }
}