<!--
Copyright (C) 2019-2023 Nicola Murino

This program is free software: you can redistribute it and/or modify
it under the terms of the GNU Affero General Public License as published
by the Free Software Foundation, version 3.

This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU Affero General Public License for more details.

You should have received a copy of the GNU Affero General Public License
along with this program. If not, see <https://www.gnu.org/licenses/>.
-->
{{template "base" .}}

{{define "title"}}{{.Title}}{{end}}

{{define "extra_css"}}
<link href="{{.StaticURL}}/vendor/codemirror/codemirror.css" rel="stylesheet">
<link href="{{.StaticURL}}/vendor/codemirror/addon/dialog/dialog.css" rel="stylesheet">
<link href="{{.StaticURL}}/vendor/codemirror/addon/search/matchesonscrollbar.css" rel="stylesheet">
<style>
    .CodeMirror {
        border: 1px solid #eee;
        height: 30em;
        font-size: 13px;
    }
    .shortcut {font-family: monospace; color: #666;}
</style>
{{end}}
{{define "additionalnavitems"}}
<li class="nav-item dropdown no-arrow mx-1">
    <a class="nav-link dropdown-toggle" href="#" id="infoDropdown" role="button"
        data-toggle="modal" data-target="#infoModal">
        <i class="fas fa-info fa-fw"></i>
    </a>
</li>

<div class="topbar-divider d-none d-sm-block"></div>
{{end}}

{{define "page_body"}}
<div id="errorMsg" class="alert alert-warning fade show" style="display: none;" role="alert">
    <span id="errorTxt"></span>
    <button type="button" class="close" aria-label="Close" onclick="dismissErrorMsg();">
      <span aria-hidden="true">&times;</span>
    </button>
</div>
<script type="text/javascript">
    function dismissErrorMsg(){
        $('#errorMsg').hide();
    }
</script>
<div class="card shadow mb-4">
    <div class="card-header">
        <h6 class="d-flex justify-content-between align-items-center">
            <span class="font-weight-bold text-primary">{{- if .ReadOnly}}View{{- else}}Edit{{- end}} file "{{.Path}}"</span>
            <span class="btn-toolbar">
                <a id="idBack" class="btn btn-secondary mx-1 my-1" href='{{.FilesURL}}?path={{.CurrentDir}}' role="button">Back</a>
                {{if not .ReadOnly}}
                <a id="idSave" class="btn btn-primary mx-1 my-1" href="#" onclick="saveFile()" role="button">Save</a>
                {{end}}
            </span>
        </h6>
    </div>
    <div class="card-body">
        <div class="col-sm-12">
            <textarea id="editor" name="editor"></textarea>
        </div>
    </div>
</div>
{{end}}

{{define "dialog"}}
<div class="modal fade" id="infoModal" tabindex="-1" role="dialog" aria-labelledby="infoModalLabel"
    aria-hidden="true">
    <div class="modal-dialog" role="document">
        <div class="modal-content">
            <div class="modal-header">
                <h5 class="modal-title" id="infoModalLabel">
                    Editor keybindings
                </h5>
                <button class="close" type="button" data-dismiss="modal" aria-label="Close">
                    <span aria-hidden="true">&times;</span>
                </button>
            </div>
            <div class="modal-body">
                <p>
                    <span class="shortcut">Ctrl-F / Cmd-F</span> => Start searching
                </p>
                <p>
                    <span class="shortcut">Ctrl-G / Cmd-G</span> => Find next
                </p>
                <p>
                    <span class="shortcut">Shift-Ctrl-G / Shift-Cmd-G</span> => Find previous
                </p>
                <p>
                    <span class="shortcut">Shift-Ctrl-F / Cmd-Option-F</span> => Replace
                </p>
                <p>
                    <span class="shortcut">Shift-Ctrl-R / Shift-Cmd-Option-F</span> => Replace all
                </p>
                <p>
                    <span class="shortcut">Alt-G</span> => Jump to line
                </p>
                <p>
                    <span class="shortcut">Alt-F</span> => Persistent search: enter to find next, Shift-Enter to find previous
                </p>
            </div>
            <div class="modal-footer">
                <button class="btn btn-primary" type="button" data-dismiss="modal">OK</button>
            </div>
        </div>
    </div>
</div>
{{end}}

{{define "extra_js"}}
<script src="{{.StaticURL}}/vendor/codemirror/codemirror.js"></script>
<script src="{{.StaticURL}}/vendor/codemirror/meta.js"></script>
<script src="{{.StaticURL}}/vendor/codemirror/addon/selection/active-line.js"></script>
<script src="{{.StaticURL}}/vendor/codemirror/addon/dialog/dialog.js"></script>
<script src="{{.StaticURL}}/vendor/codemirror/addon/search/searchcursor.js"></script>
<script src="{{.StaticURL}}/vendor/codemirror/addon/search/search.js"></script>
<script src="{{.StaticURL}}/vendor/codemirror/addon/scroll/annotatescrollbar.js"></script>
<script src="{{.StaticURL}}/vendor/codemirror/addon/search/matchesonscrollbar.js"></script>
<script src="{{.StaticURL}}/vendor/codemirror/addon/search/jump-to-line.js"></script>
<script type="text/javascript">
    $(document).ready(function () {
        var cm = CodeMirror.fromTextArea(document.getElementById("editor"), {
            lineNumbers: true,
            styleActiveLine: true,
            extraKeys: {"Alt-F": "findPersistent"},
            {{if .ReadOnly}}
            readOnly: true,
            {{end}}
            autofocus: true
        });
        var filename = "{{.Path}}";
        var extension = filename.slice((filename.lastIndexOf(".") - 1 >>> 0) + 2).toLowerCase();
        mode = CodeMirror.findModeByExtension(extension);
        if (mode != null) {
            cm.setOption("mode", mode.mode);
        }
        cm.setValue("{{.Data}}");
        setInterval(keepAlive, 300000);
    });

    function keepAlive() {
        $.ajax({
            url: '{{.ProfileURL}}',
            timeout: 15000
        });
    }

    {{if not .ReadOnly}}
    function saveFile() {
        $('#idSave').addClass("disabled");
        $('#errorMsg').hide();

        async function uploadFile() {
            var errorMessage = "Error saving file";
            let response;
            try {
                var uploadPath = '{{.FileURL}}?path='+encodeURIComponent('{{.CurrentDir}}/{{.Name}}');
                var cm = document.querySelector('.CodeMirror').CodeMirror;
                var blob = new Blob([cm.getValue()]);
                response = await fetch(uploadPath, {
                    method: 'POST',
                    headers: {
                        'X-CSRF-TOKEN': '{{.CSRFToken}}'
                    },
                    credentials: 'same-origin',
                    redirect: 'error',
                    body: blob
                });
                if (response.status == 201){
                    window.location.href = '{{.FilesURL}}?path='+encodeURIComponent('{{.CurrentDir}}');
                } else {
                    let jsonResponse;
                    try {
                        jsonResponse = await response.json();
                    } catch(e){
                        throw Error(errorMessage);
                    }
                    if (jsonResponse.message) {
                        errorMessage = jsonResponse.message;
                    }
                    if (jsonResponse.error) {
                        errorMessage += ": " + jsonResponse.error;
                    }
                    throw Error(errorMessage);
                }
            } catch (e){
                throw Error(errorMessage+": " +e.message);
            }
        }

        uploadFile().catch(function(error){
            $('#idSave').removeClass("disabled");
            $('#errorTxt').text(error.message);
            $('#errorMsg').show();
        });
    }
    {{end}}
</script>
{{end}}