<?php
    global $c;
    global $varPosted;
    global $varRows;

    $strQueryDir = "files/sql";
        
    $varFiles = is_dir($strQueryDir)? scandir($strQueryDir) : [];
    $varFiles = array_diff($varFiles, [".", ".."]);

    $strSelection   = Request::getArg(0);
    $varInputs      = [[]];
    $varRows        = null;
    $strError       = null;
    $varOptions     = [];

    $intAllowed     = 1;

    if ($strSelection !== null && strlen($strSelection) > 0)
    {
        $strSelection = urldecode($strSelection);
        $strFileData = file_get_contents("{$strQueryDir}/{$strSelection}");

        // Translate occurrences of {{ Date: next monday }} into yyyy-MM-dd format:
        // Can be used in string literals or default values in comments!
        preg_match_all(
            "/\{\{\s*?Date\:\s*?(.*)\s*?\}\}/i",
            $strFileData,
            $varDateReplacements);

        for ($i = 0; $i < count($varDateReplacements[0]); $i++)
        {
            try
            {
                $strMatch       = $varDateReplacements[0][$i];
                $strMatchSafe   = preg_quote($strMatch);
                $strDateString  = $varDateReplacements[1][$i];
                $strFileData    = preg_replace(
                    "/{$strMatchSafe}/i",
                    date_create($strDateString)->format("Y-m-d"),
                    $strFileData);
            }
            catch (Exception $x) {}
        }

        //foreach ($varReplacements as $k => $v)
        //    $strFileData = preg_replace("/\{\{{$k}\}\}/i", $v, $strFileData);

        // Get the inputs:
        preg_match_all(
            "/declare\s+\@([A-Za-z0-9]{1,})\s+(.+)\s+=\s+\?;(\s+-- Default\:\s(.*))?/i",
            $strFileData,
            $varInputs);

        //Respond::json($varInputs);

        // Get the options defined in comments:
        preg_match_all(
            "/--\s+([A-Za-z0-9]{1,})\:\s+(.+)/i",
            $strFileData,
            $varOptionMatches);

        if (count($varOptionMatches[0]) > 0)
        {
            for ($i = 0; $i < count($varOptionMatches[0]); $i++)
            {
                $strKey     = strtolower($varOptionMatches[1][$i]);
                $strValue   = $varOptionMatches[2][$i];
                $varOptions[$strKey] = $strValue;
            }
        }

        if (array_key_exists("allow", $varOptions))
        {
            $intAllowed         = 0;
            $strAllowedObjects  = strtolower($varOptions["allow"]);
            $varAllowedObjects  = explode(",", $strAllowedObjects);
            $varUserObjects     = [];

            if (class_exists("UserAuth"))
            {
                $varUser = UserAuth::getUser();

                if ($varUser !== null)
                {
                    foreach (UserAuth::getUserGroups() as $strGroup)
                        $varUserObjects[] = strtolower($strGroup);

                    $varUserObjects[] = strtolower($varUser["cn"]);
                }
            }

            foreach ($varAllowedObjects as $strObject)
                if (in_array($strObject, $varUserObjects))
                    $intAllowed = 1;
        }
    
        $intRun = Request::getParam("run");

        //if (Request::posts("run_query"))
        if ($intRun !== null && $intRun == 1 && $intAllowed == 1)
        {
            $varPosted = Request::getParams();
            unset($varPosted["run"]);

            try
            {
                $varRows = $c->query("{$strQueryDir}/{$strSelection}", $varPosted);
                $strView = "files/views/{$strSelection}.php";

                // Load a custom view if there is one:
                if (file_exists($strView))
                {
                    ob_clean();
                    require $strView;
                    ob_end_flush();
                    exit;
                }
            }
            catch (Exception $x)
            {
                $strMessage = $x->getMessage();
                $strError = $strMessage;
                $strError .= "\n\n";

                $strFile = $x->getFile();
                $intLine = $x->getLine();
                
                $strError .= "#-1 {$strFile}({$intLine}): {$strMessage}\n";
                $strError .= $x->getTraceAsString();
            }
        }
    }

    // Fancier title processing:
    $strTitle = null;
    if (array_key_exists("title", $varOptions))
        $strTitle = $varOptions["title"];

    $strTitle = $strTitle ?? $strSelection ?? "Report";
?>

<?php if (array_key_exists("scale", $varOptions)): ?>
    <style>
        table {
            font-size: <?= $varOptions["scale"]; ?>em;
        }
    </style>
<?php endif; ?>

<title><?= $strTitle; ?></title>

<div class="navbar navbar-expand bg-primary navbar-dark d-print-none">
    <div class="container-fluid justify-content-between">
        <div class="d-inline-flex align-items-center">
            <a class="navbar-brand"><?= $strTitle; ?></a>

            <a class="nav-item btn btn-outline-light me-2" onclick="fnShowPage('#page-input');"><i class="fa fa-fw fa-edit"></i> <span class="d-none d-lg-inline">Setup</span></a>

            <?php if ($varRows !== null && count($varRows) > 0): ?>
                <a class="nav-item btn btn-outline-light me-2" onclick="fnShowPage('#page-output');"><i class="fa fa-fw fa-table"></i> <span class="d-none d-lg-inline">Results</span></a>
                <a class="nav-item btn btn-outline-light me-2" onclick="fnExport();"><i class="fa fa-fw fa-download"></i> <span class="d-none d-lg-inline">.csv</span></a>
            <?php endif; ?>
        </div>
    </div>
</div>

<div class="page" id="page-input">
    <div class="container my-3">

        <?php if ($strError !== null): ?>
            <div class="row">
                <div class="col-md-12">
                    <div class="alert alert-danger">
                        <pre class="mb-0"><?= $strError; ?></pre>
                    </div>
                </div>
            </div>
        <?php endif; ?>

        <?php if ($varRows !== null && count($varRows) < 1): ?>
            <div class="row">
                <div class="col-md-12">
                    <div class="alert alert-warning">
                        No rows returned.
                    </div>
                </div>
            </div>
        <?php endif; ?>

        <div class="row">
            <div class="col-md-6">
                <div class="mb-3">
                    <label>Choose Query</label>
                    <div class="input-group">
                        <span class="input-group-text"><i class="fa fa-fw fa-folder"></i></span>
                        <input type="text" class="form-control" name="query" placeholder="Search files..." value="<?= $strSelection; ?>" id="query-search" />
                    </div>
                    <div class="query-search-results">
                        <?php foreach ($varFiles as $f): ?>
                            <div class="d-none border p-3">
                                <a class="link-underline link-underline-opacity-0" href="/run/<?= $f; ?>">
                                    <i class="fa fa-fw fa-scroll me-2"></i>
                                    <?= $f; ?>
                                </a>
                            </div>
                        <?php endforeach; ?>
                    </div>
                </div>
            </div>
        </div>

        <?php if ($intAllowed == 1): ?>

            <?php foreach (["description"] as $strClass): ?>
                <?php if (array_key_exists($strClass, $varOptions)): ?>
                    <div class="row">
                        <div class="col-md-6">
                            <div class="mb-3">
                                <?= $varOptions[$strClass]; ?>
                            </div>
                        </div>
                    </div>
                <?php endif; ?>
            <?php endforeach; ?>

            <?php foreach (["danger", "warning", "info"] as $strClass): ?>
                <?php if (array_key_exists($strClass, $varOptions)): ?>
                    <div class="row">
                        <div class="col-md-6">
                            <div class="alert alert-<?= $strClass; ?>">
                                <strong><?= ucfirst($strClass); ?>:</strong> <?= $varOptions[$strClass]; ?>
                            </div>
                        </div>
                    </div>
                <?php endif; ?>
            <?php endforeach; ?>

            <form method="get">
                <?php if (count($varInputs[0]) > 0): ?>
                    <?php for ($i = 0; $i < count($varInputs[0]); $i++): ?>
                        <?php
                            $strInputName = $varInputs[1][$i];
                            $strInputType = $varInputs[2][$i];

                            $strInputTypeHTML = "text";

                            if ($strInputType == "datetime")
                                $strInputTypeHTML = "date";

                            $strInputDefaultValue = "";
                            if (strlen($varInputs[4][$i]) > 0)
                                $strInputDefaultValue = $varInputs[4][$i];
                        ?>

                        <div class="row">
                            <div class="col-md-6">
                                <div class="mb-3">
                                    <label><?= $strInputName; ?> <code><?= $strInputType; ?></code></label>

                                    <div class="input-group">
                                        <span class="input-group-text"><i class="fa fa-fw fa-at"></i></span>
                                        <input type="<?= $strInputTypeHTML; ?>" class="form-control" name="<?= $strInputName; ?>" value="<?= Request::getParam($strInputName) ?? $strInputDefaultValue; ?>" />
                                    </div>
                                </div>
                            </div>
                        </div>
                    <?php endfor; ?>
                <?php endif; ?>


                <div class="row">
                    <div class="col-md-6">
                        <div class="mb-3">
                            <label>Actions</label>
                            <div>
                                <a class="btn btn-primary" onclick="fnSubmit(this);"><i class="fa fa-fw fa-server me-1"></i> Execute</a>
                            </div>
                        </div>
                    </div>
                </div>

                <input type="hidden" name="run" value="1" />
            </form>

        <?php else: ?>

            <div class="row">
                <div class="col-md-6">
                    <div class="text-danger mb-3">
                        The selected report requires being logged in as a user with permission to run it.
                    </div>
                </div>
            </div>

        <?php endif; ?>
    </div>
</div>

<div class="page" id="page-output">
    <?php if ($varRows !== null && count($varRows) > 0): ?>

        <?php
            $varRow1    = $varRows[0];
            $varColumns = [];

            foreach ($varRow1 as $k => $v)
                $varColumns[] = $k;
        ?>

        <div class="d-none d-print-block">
            <div class="container-fluid">
                <div class="row">
                    <div class="col-md-6">
                        <h1><?= $strTitle; ?></h1>

                        <?php foreach (["description"] as $strClass): ?>
                            <?php if (array_key_exists($strClass, $varOptions)): ?>
                                <p><?= $varOptions[$strClass]; ?></p>
                            <?php endif; ?>
                        <?php endforeach; ?>
                    </div>

                    <div class="col-md-6">
                        <ul>
                            <?php foreach ($varPosted as $k => $v): ?>
                                <li><?= $k; ?>: <?= $v; ?></li>
                            <?php endforeach; ?>
                            <li>Printed: <?= date("Y-m-d H:i:s"); ?></li>
                        </ul>
                    </div>
                </div>
            </div>
        </div>

        <div class="table-responsive">
            <table class="table table-sm table-striped table-bordered w-100" id="table">
                <thead>
                    <tr>
                        <?php foreach ($varColumns as $col): ?>
                            <?php
                                // Hide columns that begin with underscore:
                                if ($col[0] == "_")
                                    continue;
                            ?>
                            <th class="text-nowrap sorting"><?= $col; ?> <?php DataTable::sortIcon(); ?></th>
                        <?php endforeach; ?>
                    </tr>
                </thead>

                <tbody>
                    <?php foreach ($varRows as $r): ?>
                        <?php
                            // Allow SQL data to control row classes with _row_class column:
                            $strRowClass = "";
                            if (array_key_exists("_row_class", $r))
                                $strRowClass = $r["_row_class"];

                            $strNextCellClass = "";
                        ?>
                        <tr>
                            <?php foreach ($varColumns as $col): ?>
                                <?php
                                    $strCellClass = "";

                                    if (strlen($strRowClass) > 0)
                                        $strCellClass = $strRowClass;

                                    if (strlen($strNextCellClass) > 0)
                                        $strCellClass = $strNextCellClass;

                                    // Allow SQL data to controll next cell class with _next_cell_class column:
                                    if (preg_match("/^_next_cell_class/i", $col))
                                        $strNextCellClass = $r[$col];

                                    // Hide columns that begin with underscore:
                                    if ($col[0] == "_")
                                        continue;
                                ?>

                                <td class="<?= $strCellClass; ?>"><?= $r[$col]; ?></td>

                                <?php
                                    $strNextCellClass = "";
                                ?>
                            <?php endforeach; ?>
                        </tr>
                    <?php endforeach; ?>
                </tbody>
            </table>
        </div>
    <?php endif; ?>
</div>

<script>
    $(function() {
        var fileSearch = $("#query-search").first();

        fileSearch.on("focus", function() {
            fileSearch.trigger("input");
            fileSearch.select();
        });

        fileSearch.on("input", function() {
            var q = fileSearch.val();

            $(".query-search-results div").each(function(i, x) {
                x = $(x);
                x.addClass("d-none");

                //if (q.length < 1)
                //    return;

                var fileName = x.text();

                if (fileName.toLowerCase().includes(q.toLowerCase()))
                    x.removeClass("d-none");
            });
        });


        fnShowPage = function(id)
        {
            $("div.page").addClass("d-none");
            $(id).removeClass("d-none");
        };

        fnSubmit = function(x)
        {
            x = $(x);
            x.parents("form").first().submit();
        };

        fnExport = function()
        {
            fnShowPage("#page-output");
            $("#table").exportCSV({name: "<?= $strSelection; ?>"});
        };
    });
</script>

<?php if ($varRows !== null && count($varRows) > 0): ?>
    <script>
        $(function() {
            fnShowPage("#page-output");
        });
    </script>

    <?php DataTable::js("#table"); ?>
<?php endif; ?>