aboutsummaryrefslogtreecommitdiff
path: root/dist/script.js
blob: e1e7efda14576cc5eca19e6453c520db75c05790 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
/* global Hls, dragula, CAMERAS, DEFAULTS */

const STATE = loadState();

let HLSInstances = {};

function loadState() {
    let hash = document.location.hash;
    if (hash.length === 0) {
        history.replaceState(null, "", "#" + DEFAULTS.join(","));
        return DEFAULTS;
    }
    hash = hash.replace(/^#/, "");
    if (hash.length === 0) {
        return [];
    }
    return hash.split(",");
}

function handleCheckbox(evt) {
    const id = evt.target.dataset.id;
    if (evt.target.checked) {
        if (!STATE.includes(id)) {
            appendCamera(id);
        }
    } else {
        if (STATE.includes(id)) {
            removeCamera(id);
        }
    }
}

function findCamera(id) {
    for (let { cams } of CAMERAS) {
        let found = cams.find(x => x.id === id);
        if (found !== undefined) {
            return found;
        }
    }
}

function compareStrings(a, b) {
    var nameA = a.toUpperCase(); // ignore upper and lowercase
    var nameB = b.toUpperCase(); // ignore upper and lowercase
    if (nameA < nameB) {
        return -1;
    }
    if (nameA > nameB) {
        return 1;
    }

    // names must be equal
    return 0;
}

function loadData() {
    const map = L.map('map');
    const bounds = L.latLngBounds([CAMERAS[0].coord, CAMERAS[1].coord]);

    L.tileLayer('https://{s}.tile.openstreetmap.org/{z}/{x}/{y}.png', {
        attribution: '&copy; <a href="https://www.openstreetmap.org/copyright">OpenStreetMap</a> contributors'
    }).addTo(map);

    for (let { coord, cams } of CAMERAS) {
        let marker = L.marker(coord).addTo(map);
        bounds.extend(coord);

        const boxes = document.createElement("ul");
        for (let {id, name} of cams) {
            const label = document.createElement("label");
            const checkbox = document.createElement("input");
            checkbox.type = "checkbox";
            checkbox.dataset.id = id;
            checkbox.addEventListener("input", handleCheckbox);
            checkbox.checked = STATE.includes(id);
            label.append(checkbox);
            const text = document.createTextNode(name);
            label.append(text);

            const li = document.createElement("li");
            li.append(label);
            boxes.append(li);
        }
        marker.bindPopup(boxes);
    }

    map.fitBounds(bounds);
    for (let id of STATE) {
        let camera = findCamera(id);
        document.querySelector("main").append(makeCameraStream(camera));
    }
}

function makeCameraStream(camera) {
    const section = document.createElement("section");
    section.dataset.id = camera.id;
    const header = document.createElement("h2");
    header.innerText = camera.name;
    const close = document.createElement("button");
    close.className = 'close';
    close.type = "button";
    close.innerText = "X";
    header.append(close);
    close.addEventListener('click', evt => {
        removeCamera(evt.target.parentNode.parentNode.dataset.id);
    });
    section.append(header);
    let video;
    if (camera.stream !== undefined) {
        video = document.createElement("video");
        video.controls = true;
        if (Hls.isSupported()) {
            const hls = new Hls({manifestLoadingTimeOut: 60000});
            if (location.hostname === 'localhost' && camera.stream.startsWith('/')) {
                hls.loadSource('https://pig.observer' + camera.stream);
            } else {
                hls.loadSource(camera.stream);
            }
            hls.attachMedia(video);
            hls.on(Hls.Events.MANIFEST_PARSED, function () {
                video.play();
            });
            hls.on(Hls.Events.ERROR, function (event, data) {
                if (data.fatal) {
                    switch (data.type) {
                        case Hls.ErrorTypes.NETWORK_ERROR:
                            // try to recover network error
                            if (data.response.code === 404) {
                                hls.destroy();
                                let errorMessage = document.createTextNode("Stream not found (probably doesn't exist after all)");
                                video.parentNode.append(errorMessage);
                                video.remove();
                                break;
                            }
                            console.log("fatal network error encountered, try to recover");
                            console.log(data);
                            hls.startLoad();
                            break;
                        case Hls.ErrorTypes.MEDIA_ERROR:
                            console.log("fatal media error encountered, try to recover");
                            hls.recoverMediaError();
                            break;
                        default:
                            // cannot recover
                            hls.destroy();
                            let errorMessage = document.createTextNode(
                                "Error: " + JSON.stringify([event, data])
                            );
                            video.parentNode.append(errorMessage);
                            video.remove();
                            break;
                    }
                }
            });
            HLSInstances[camera.id] = hls;
        }
        // hls.js is not supported on platforms that do not have Media Source
        // Extensions (MSE) enabled.
        //
        // When the browser has built-in HLS support (check using `canPlayType`),
        // we can provide an HLS manifest (i.e. .m3u8 URL) directly to the video
        // element through the `src` property. This is using the built-in support
        // of the plain video element, without using hls.js.
        //
        // Note: it would be more normal to wait on the 'canplay' event below however
        // on Safari (where you are most likely to find built-in HLS support) the
        // video.src URL must be on the user-driven white-list before a 'canplay'
        // event will be emitted; the last video event that can be reliably
        // listened-for when the URL is not on the white-list is 'loadedmetadata'.
        else if (video.canPlayType("application/vnd.apple.mpegurl")) {
            video.src = camera.stream;
            if (location.hostname === 'localhost' && camera.stream.startsWith('/')) {
                video.src = 'https://pig.observer' + camera.stream;
            }
            video.addEventListener("loadedmetadata", function () {
                video.play();
            });
        }
    } else {
        video = document.createElement("img");
        video.className = 'reload';
        video.src = camera.url;
        if (location.hostname === 'localhost' && camera.url.startsWith('/')) {
            video.src = 'https://pig.observer' + camera.url;
        }
        setTimeout(pokeImages, 1);
    }
    section.append(video);
    return section;
}

function appendCamera(id) {
    STATE.push(id);
    history.replaceState(null, "", "#" + STATE.join(","));
    let camera = findCamera(id);
    document.querySelector("main").append(makeCameraStream(camera));
}

function removeCamera(id) {
    const oldIndex = STATE.indexOf(id);
    if (oldIndex > -1) {
        STATE.splice(oldIndex, 1);
    }
    history.replaceState(null, "", "#" + STATE.join(","));
    for (let video of document.querySelectorAll("main section")) {
        if (video.dataset.id === id) {
            video.remove();
        }
    }
    for (let checkbox of document.querySelectorAll('nav input')) {
        if (checkbox.dataset.id === id) {
            checkbox.checked = false;
        }
    }
    if (HLSInstances[id] !== undefined) {
        HLSInstances[id].destroy();
        HLSInstances[id] = undefined;
    }
}

const playall = document.getElementById("playall");
if (playall) {
    playall.addEventListener("click", e => {
        for (let k of document.querySelectorAll("video")) {
            k.play();
            k.currentTime += 10000;
        }
    });
}
document.getElementById("vidwidth").addEventListener("input", e => {
    document.body.style.setProperty("--video-width", e.target.value + "vw");
});

loadData();

const dragHandler = dragula([document.querySelector("main")], {
    moves(el, container, handle) {
        return handle.tagName.toLowerCase() === "h2";
    }
});
dragHandler.on("drop", (el, target, source, sibling) => {
    const myID = el.dataset.id;
    const neighborID = sibling.dataset.id;
    const oldIndex = STATE.indexOf(myID);
    if (oldIndex > -1) {
        STATE.splice(oldIndex, 1);
    }
    const newIndex = STATE.indexOf(neighborID);
    if (newIndex > -1) {
        STATE.splice(newIndex, 0, myID);
    } else {
        console.log("uhhhhh fuck");
    }
    history.replaceState(null, "", "#" + STATE.join(","));
});

let pokeTimeout = undefined;

function pokeImages() {
    for (let img of document.querySelectorAll('img.reload')) {
        if (MANUAL_CACHE_BUST) {
            if (img.dataset.origSrc === undefined) {
                img.dataset.origSrc = img.src;
            }
            fetch(img.dataset.origSrc, {cache: "no-cache"})
                .then(function (response) {
                    if (!response.ok) {
                        console.error(`HTTP error! status: ${response.status}`);
                    } else {
                        return response.blob();
                    }
                })
                .then(function (response) {
                    img.src = URL.createObjectURL(response);
                    if (pokeTimeout !== undefined) {
                        clearTimeout(pokeTimeout);
                    }
                    pokeTimeout = setTimeout(pokeImages, 1000);
                });
        } else {
            img.src = img.src.replace(/(\?0\.\d+)?$/, '?' + Math.random());
            img.addEventListener('load', e => {
                if (pokeTimeout !== undefined) {
                    clearTimeout(pokeTimeout);
                }
                pokeTimeout = setTimeout(pokeImages, 1000);
            });
        }
    }
}