/*jslint browser: true, continue: true, plusplus: true */
/*global $: false, angular: false */

'use strict';

var syncthing = angular.module('syncthing', []);
var urlbase = 'rest';

syncthing.controller('SyncthingCtrl', function ($scope, $http) {
    var prevDate = 0;
    var getOK = true;
    var restarting = false;

    $scope.connections = {};
    $scope.config = {};
    $scope.myID = '';
    $scope.nodes = [];
    $scope.configInSync = true;
    $scope.errors = [];
    $scope.seenError = '';
    $scope.model = {};
    $scope.repos = [];

    // Strings before bools look better
    $scope.settings = [
    {id: 'ListenStr', descr: 'Sync Protocol Listen Addresses', type: 'text', restart: true},
    {id: 'MaxSendKbps', descr: 'Outgoing Rate Limit (KBps)', type: 'number', restart: true},
    {id: 'RescanIntervalS', descr: 'Rescan Interval (s)', type: 'number', restart: true},
    {id: 'ReconnectIntervalS', descr: 'Reconnect Interval (s)', type: 'number', restart: true},
    {id: 'ParallelRequests', descr: 'Max Outstanding Requests', type: 'number', restart: true},
    {id: 'MaxChangeKbps', descr: 'Max File Change Rate (KBps)', type: 'number', restart: true},

    {id: 'GlobalAnnEnabled', descr: 'Global Announce', type: 'bool', restart: true},
    {id: 'LocalAnnEnabled', descr: 'Local Announce', type: 'bool', restart: true},
    {id: 'StartBrowser', descr: 'Start Browser', type: 'bool'},
    {id: 'UPnPEnabled', descr: 'Enable UPnP', type: 'bool'},
    ];

    $scope.guiSettings = [
    {id: 'Address', descr: 'GUI Listen Addresses', type: 'text', restart: true},
    {id: 'User', descr: 'GUI Authentication User', type: 'text', restart: true},
    {id: 'Password', descr: 'GUI Authentication Password', type: 'password', restart: true},
    ];

    function getSucceeded() {
        if (!getOK) {
            $('#networkError').modal('hide');
            getOK = true;
        }
        if (restarting) {
            $('#restarting').modal('hide');
            restarting = false;
        }
    }

    function getFailed() {
        if (restarting) {
            return;
        }
        if (getOK) {
            $('#networkError').modal({backdrop: 'static', keyboard: false});
            getOK = false;
        }
    }

    function nodeCompare(a, b) {
        if (typeof a.Name !== 'undefined' && typeof b.Name !== 'undefined') {
            if (a.Name < b.Name)
                return -1;
            return a.Name > b.Name;
        }
        if (a.NodeID < b.NodeID) {
            return -1;
        }
        return a.NodeID > b.NodeID;
    }

    $scope.refresh = function () {
        $http.get(urlbase + '/system').success(function (data) {
            getSucceeded();
            $scope.system = data;
        }).error(function () {
            getFailed();
        });
        $scope.repos.forEach(function (repo) {
            $http.get(urlbase + '/model?repo=' + encodeURIComponent(repo.ID)).success(function (data) {
                $scope.model[repo.ID] = data;
            });
        });
        $http.get(urlbase + '/connections').success(function (data) {
            var now = Date.now(),
            td = (now - prevDate) / 1000,
            id;

            prevDate = now;
            $scope.inbps = 0;
            $scope.outbps = 0;

            for (id in data) {
                if (!data.hasOwnProperty(id)) {
                    continue;
                }
                try {
                    data[id].inbps = Math.max(0, 8 * (data[id].InBytesTotal - $scope.connections[id].InBytesTotal) / td);
                    data[id].outbps = Math.max(0, 8 * (data[id].OutBytesTotal - $scope.connections[id].OutBytesTotal) / td);
                } catch (e) {
                    data[id].inbps = 0;
                    data[id].outbps = 0;
                }
                $scope.inbps += data[id].inbps;
                $scope.outbps += data[id].outbps;
            }
            $scope.connections = data;
        });
        $http.get(urlbase + '/errors').success(function (data) {
            $scope.errors = data;
        });
    };

    $scope.repoStatus = function (repo) {
        if (typeof $scope.model[repo] === 'undefined') {
            return 'Unknown';
        }

        if ($scope.model[repo].invalid !== '') {
            return 'Stopped';
        }

        var state = '' + $scope.model[repo].state;
        state = state[0].toUpperCase() + state.substr(1);

        if (state == "Syncing" || state == "Idle") {
            state += " (" + $scope.syncPercentage(repo) + "%)";
        }

        return state;
    }

    $scope.repoClass = function (repo) {
        if (typeof $scope.model[repo] === 'undefined') {
            return 'text-info';
        }

        if ($scope.model[repo].invalid !== '') {
            return 'text-warning';
        }

        var state = '' + $scope.model[repo].state;
        if (state == 'idle') {
            return 'text-success';
        }
        if (state == 'syncing') {
            return 'text-primary';
        }
        return 'text-info';
    }

    $scope.syncPercentage = function (repo) {
        if (typeof $scope.model[repo] === 'undefined') {
            return 100;
        }
        if ($scope.model[repo].globalBytes === 0) {
            return 100;
        }

        var pct = 100 * $scope.model[repo].inSyncBytes / $scope.model[repo].globalBytes;
        return Math.ceil(pct);
    };

    $scope.nodeStatus = function (nodeCfg) {
        var conn = $scope.connections[nodeCfg.NodeID];
        if (conn) {
            if (conn.Completion === 100) {
                return 'In Sync';
            } else {
                return 'Syncing (' + conn.Completion + '%)';
            }
        }

        return 'Disconnected';
    };

    $scope.nodeIcon = function (nodeCfg) {
        var conn = $scope.connections[nodeCfg.NodeID];
        if (conn) {
            if (conn.Completion === 100) {
                return 'ok';
            } else {
                return 'refresh';
            }
        }

        return 'minus';
    };

    $scope.nodeClass = function (nodeCfg) {
        var conn = $scope.connections[nodeCfg.NodeID];
        if (conn) {
            if (conn.Completion === 100) {
                return 'success';
            } else {
                return 'primary';
            }
        }

        return 'info';
    };

    $scope.nodeAddr = function (nodeCfg) {
        var conn = $scope.connections[nodeCfg.NodeID];
        if (conn) {
            return conn.Address;
        }
        return '?';
    };

    $scope.nodeCompletion = function (nodeCfg) {
        var conn = $scope.connections[nodeCfg.NodeID];
        if (conn) {
            return conn.Completion + '%';
        }
        return '';
    };

    $scope.nodeVer = function (nodeCfg) {
        if (nodeCfg.NodeID === $scope.myID) {
            return $scope.version;
        }
        var conn = $scope.connections[nodeCfg.NodeID];
        if (conn) {
            return conn.ClientVersion;
        }
        return '?';
    };

    $scope.nodeName = function (nodeCfg) {
        if (nodeCfg.Name) {
            return nodeCfg.Name;
        }
        return nodeCfg.NodeID.substr(0, 6);
    };

    $scope.editSettings = function () {
        $('#settings').modal({backdrop: 'static', keyboard: true});
    }

    $scope.saveSettings = function () {
        $scope.configInSync = false;
        $scope.config.Options.ListenAddress = $scope.config.Options.ListenStr.split(',').map(function (x) { return x.trim(); });
        $http.post(urlbase + '/config', JSON.stringify($scope.config), {headers: {'Content-Type': 'application/json'}});
        $('#settings').modal("hide");
    };

    $scope.restart = function () {
        restarting = true;
        $('#restarting').modal('show');
        $http.post(urlbase + '/restart');
        $scope.configInSync = true;
    };

    $scope.editNode = function (nodeCfg) {
        $scope.currentNode = $.extend({}, nodeCfg);
        $scope.editingExisting = true;
        $scope.editingSelf = (nodeCfg.NodeID == $scope.myID);
        $scope.currentNode.AddressesStr = nodeCfg.Addresses.join(', ');
        $('#editNode').modal({backdrop: 'static', keyboard: true});
    };

    $scope.addNode = function () {
        $scope.currentNode = {AddressesStr: 'dynamic'};
        $scope.editingExisting = false;
        $scope.editingSelf = false;
        $('#editNode').modal({backdrop: 'static', keyboard: true});
    };

    $scope.deleteNode = function () {
        $('#editNode').modal('hide');
        if (!$scope.editingExisting) {
            return;
        }

        $scope.nodes = $scope.nodes.filter(function (n) {
            return n.NodeID !== $scope.currentNode.NodeID;
        });
        $scope.config.Nodes = $scope.nodes;

        for (var i = 0; i < $scope.repos.length; i++) {
            $scope.repos[i].Nodes = $scope.repos[i].Nodes.filter(function (n) {
                return n.NodeID !== $scope.currentNode.NodeID;
            });
        }

        $scope.configInSync = false;
        $http.post(urlbase + '/config', JSON.stringify($scope.config), {headers: {'Content-Type': 'application/json'}});
    };

    $scope.saveNode = function () {
        var nodeCfg, done, i;

        $scope.configInSync = false;
        $('#editNode').modal('hide');
        nodeCfg = $scope.currentNode;
        nodeCfg.Addresses = nodeCfg.AddressesStr.split(',').map(function (x) { return x.trim(); });

        done = false;
        for (i = 0; i < $scope.nodes.length; i++) {
            if ($scope.nodes[i].NodeID === nodeCfg.NodeID) {
                $scope.nodes[i] = nodeCfg;
                done = true;
                break;
            }
        }

        if (!done) {
            $scope.nodes.push(nodeCfg);
        }

        $scope.nodes.sort(nodeCompare);
        $scope.config.Nodes = $scope.nodes;

        $http.post(urlbase + '/config', JSON.stringify($scope.config), {headers: {'Content-Type': 'application/json'}});
    };

    $scope.otherNodes = function () {
        return $scope.nodes.filter(function (n){
            return n.NodeID !== $scope.myID;
        });
    };

    $scope.thisNode = function () {
        var i, n;

        for (i = 0; i < $scope.nodes.length; i++) {
            n = $scope.nodes[i];
            if (n.NodeID === $scope.myID) {
                return [n];
            }
        }
    };

    $scope.errorList = function () {
        return $scope.errors.filter(function (e) {
            return e.Time > $scope.seenError;
        });
    };

    $scope.clearErrors = function () {
        $scope.seenError = $scope.errors[$scope.errors.length - 1].Time;
        $http.post(urlbase + '/error/clear');
    };

    $scope.friendlyNodes = function (str) {
        for (var i = 0; i < $scope.nodes.length; i++) {
            var cfg = $scope.nodes[i];
            str = str.replace(cfg.NodeID, $scope.nodeName(cfg));
        }
        return str;
    };

    $scope.editRepo = function (nodeCfg) {
        $scope.currentRepo = $.extend({selectedNodes: {}}, nodeCfg);
        $scope.currentRepo.Nodes.forEach(function (n) {
            $scope.currentRepo.selectedNodes[n.NodeID] = true;
        });
        $scope.editingExisting = true;
        $('#editRepo').modal({backdrop: 'static', keyboard: true});
    };

    $scope.addRepo = function () {
        $scope.currentRepo = {selectedNodes: {}};
        $scope.editingExisting = false;
        $('#editRepo').modal({backdrop: 'static', keyboard: true});
    };

    $scope.saveRepo = function () {
        var repoCfg, done, i;

        $scope.configInSync = false;
        $('#editRepo').modal('hide');
        repoCfg = $scope.currentRepo;
        repoCfg.Nodes = [];
        repoCfg.selectedNodes[$scope.myID] = true;
        for (var nodeID in repoCfg.selectedNodes) {
            if (repoCfg.selectedNodes[nodeID] === true) {
                repoCfg.Nodes.push({NodeID: nodeID});
            }
        }
        delete repoCfg.selectedNodes;

        done = false;
        for (i = 0; i < $scope.repos.length; i++) {
            if ($scope.repos[i].ID === repoCfg.ID) {
                $scope.repos[i] = repoCfg;
                done = true;
                break;
            }
        }

        if (!done) {
            $scope.repos.push(repoCfg);
        }

        $scope.config.Repositories = $scope.repos;

        $http.post(urlbase + '/config', JSON.stringify($scope.config), {headers: {'Content-Type': 'application/json'}});
    };

    $scope.deleteRepo = function () {
        $('#editRepo').modal('hide');
        if (!$scope.editingExisting) {
            return;
        }

        $scope.repos = $scope.repos.filter(function (r) {
            return r.ID !== $scope.currentRepo.ID;
        });

        $scope.config.Repositories = $scope.repos;

        $scope.configInSync = false;
        $http.post(urlbase + '/config', JSON.stringify($scope.config), {headers: {'Content-Type': 'application/json'}});
    };

    $http.get(urlbase + '/version').success(function (data) {
        $scope.version = data;
    });

    $http.get(urlbase + '/system').success(function (data) {
        $scope.system = data;
        $scope.myID = data.myID;
    });

    $http.get(urlbase + '/config').success(function (data) {
        $scope.config = data;
        $scope.config.Options.ListenStr = $scope.config.Options.ListenAddress.join(', ');

        var nodes = $scope.config.Nodes;
        nodes.sort(nodeCompare);
        $scope.nodes = nodes;

        $scope.repos = $scope.config.Repositories;

        $scope.refresh();
    });

    $http.get(urlbase + '/config/sync').success(function (data) {
        $scope.configInSync = data.configInSync;
    });

    setInterval($scope.refresh, 10000);
});

function decimals(val, num) {
    var digits, decs;

    if (val === 0) {
        return 0;
    }

    digits = Math.floor(Math.log(Math.abs(val)) / Math.log(10));
    decs = Math.max(0, num - digits);
    return decs;
}

syncthing.filter('natural', function () {
    return function (input, valid) {
        return input.toFixed(decimals(input, valid));
    };
});

syncthing.filter('binary', function () {
    return function (input) {
        if (input === undefined) {
            return '0 ';
        }
        if (input > 1024 * 1024 * 1024) {
            input /= 1024 * 1024 * 1024;
            return input.toFixed(decimals(input, 2)) + ' Gi';
        }
        if (input > 1024 * 1024) {
            input /= 1024 * 1024;
            return input.toFixed(decimals(input, 2)) + ' Mi';
        }
        if (input > 1024) {
            input /= 1024;
            return input.toFixed(decimals(input, 2)) + ' Ki';
        }
        return Math.round(input) + ' ';
    };
});

syncthing.filter('metric', function () {
    return function (input) {
        if (input === undefined) {
            return '0 ';
        }
        if (input > 1000 * 1000 * 1000) {
            input /= 1000 * 1000 * 1000;
            return input.toFixed(decimals(input, 2)) + ' G';
        }
        if (input > 1000 * 1000) {
            input /= 1000 * 1000;
            return input.toFixed(decimals(input, 2)) + ' M';
        }
        if (input > 1000) {
            input /= 1000;
            return input.toFixed(decimals(input, 2)) + ' k';
        }
        return Math.round(input) + ' ';
    };
});

syncthing.filter('short', function () {
    return function (input) {
        return input.substr(0, 6);
    };
});

syncthing.filter('alwaysNumber', function () {
    return function (input) {
        if (input === undefined) {
            return 0;
        }
        return input;
    };
});

syncthing.directive('optionEditor', function () {
    return {
        restrict: 'C',
        replace: true,
        transclude: true,
        scope: {
            setting: '=setting',
        },
        template: '<input type="text" ng-model="config.Options[setting.id]"></input>',
    };
});