swift4/Share/ShareVC.swift

   1 //
   2 //  ShareVC.swift
   3 //  Share
   4 //
   5 //  Created by Marcus Rohrmoser on 02.03.20.
   6 //  Copyright © 2020-2022 Marcus Rohrmoser mobile Software http://mro.name/me. All rights reserved.
   7 //
   8 //  This program is free software: you can redistribute it and/or modify
   9 //  it under the terms of the GNU General Public License as published by
  10 //  the Free Software Foundation, either version 3 of the License, or
  11 //  (at your option) any later version.
  12 //
  13 //  This program is distributed in the hope that it will be useful,
  14 //  but WITHOUT ANY WARRANTY; without even the implied warranty of
  15 //  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16 //  GNU General Public License for more details.
  17 //
  18 //  You should have received a copy of the GNU General Public License
  19 //  along with this program.  If not, see <http://www.gnu.org/licenses/>.
  20 //
  21
  22 import UIKit
  23 import Social
  24 import MobileCoreServices
  25 import AudioToolbox
  26
  27 private func stringFromPrivacy(_ priv : Bool) -> String {
  28     return priv
  29         ? NSLocalizedString("Private 🔐", comment:"ShareVC")
  30         : NSLocalizedString("Public 🔓", comment:"ShareVC")
  31 }
  32
  33 private func privacyFromString(_ s : String) -> Bool {
  34     return s != stringFromPrivacy(false)
  35 }
  36
  37 private func play_sound_ok() {
  38     // https://github.com/irccloud/ios/blob/6e3255eab82be047be141ced6e482ead5ac413f4/ShareExtension/ShareViewController.m#L155
  39     AudioServicesPlaySystemSound(1001)
  40 }
  41
  42 private func play_sound_err() {
  43     AudioServicesPlayAlertSound(kSystemSoundID_Vibrate)
  44 }
  45
  46 @objc (ShareVC) // https://blog.hellocode.co/post/share-extension/
  47 class ShareVC: SLComposeServiceViewController {
  48
  49     private let semver          =  info_to_semver(Bundle.main.infoDictionary)
  50
  51     private var current         : BlogM? // may become local if not for missing cfg error
  52     private var wasTouched      = false
  53     private var itemTitle       : SLComposeSheetConfigurationItem?
  54     private var itemAudience    : SLComposeSheetConfigurationItem?
  55     private var session         : URLSession?
  56     private var action          : URL = URLEmpty
  57     private var ctx             : HtmlFormDict = [:]
  58     private var url             : URL = URLEmpty
  59
  60     override func viewDidLoad() {
  61         debugPrint("viewDidLoad")
  62         super.viewDidLoad()
  63     }
  64
  65     override func configurationItems() -> [Any]! {
  66         debugPrint("configurationItems")
  67         guard let iTi = SLComposeSheetConfigurationItem() else {return []}
  68         iTi.title = NSLocalizedString("Title", comment:"ShareVC")
  69         iTi.value = self.contentText
  70
  71         guard let iAu = SLComposeSheetConfigurationItem() else {return []}
  72         iAu.title = NSLocalizedString("Audience", comment:"ShareVC")
  73         iAu.value = stringFromPrivacy(false)
  74         weak var wself = self
  75         iAu.tapHandler = {
  76             guard let sf = wself else {return}
  77             guard let iAu = sf.itemAudience else {return}
  78             iAu.value = stringFromPrivacy( !privacyFromString(iAu.value) )
  79             sf.wasTouched = true
  80         }
  81
  82         itemTitle = iTi
  83         itemAudience = iAu
  84         return [iTi, iAu]
  85     }
  86
  87     override func viewWillAppear(_ animated: Bool) {
  88         debugPrint("viewWillAppear")
  89         super.viewWillAppear(animated)
  90         view.tintColor = UIColor(red:128 / 255.0, green:173 / 255.0, blue:72 / 255.0, alpha:1.0)
  91         assert(itemTitle != nil)
  92         assert(itemAudience != nil)
  93
  94         let sha = ShaarliM.shared
  95         // sha.defaults.removePersistentDomain(forName:"group.\(BUNDLE_ID)") // doesn't do it.
  96         current = sha.loadBlog(sha.defaults)
  97         guard let current = current else {
  98             // do nothing here and let viewDidAppear display a error popup
  99             return
 100         }
 101         let cli = ShaarliHtmlClient(semver)
 102
 103         textView.keyboardType = .twitter
 104         view.subviews.forEach({ (v) in
 105             // dark mode?
 106             v.backgroundColor = UIColor.white.withAlphaComponent(0.89)
 107         })
 108
 109         guard let itemTitle = itemTitle else {return}
 110         guard let itemAudience = itemAudience else {return}
 111         guard let textView = textView else {return}
 112
 113         title = current.title
 114         itemTitle.value = contentText
 115         let preset = tagsNormalise(description:itemTitle.value, extended:current.tagsDefault, tags:[], known:[])
 116         textView.text = "\(preset.extended) \(NSLocalizedString("🔄", comment:"ShareVC"))"
 117         itemAudience.value = stringFromPrivacy(current.privateDefault)
 118
 119         let tPli = kUTTypePropertyList as String
 120         let tUrl = kUTTypeURL as String
 121         let tTxt = kUTTypeText as String
 122         let RK = NSExtensionJavaScriptPreprocessingResultsKey as String
 123         weak var ws = self
 124         for _item in (extensionContext?.inputItems)! {
 125             let item = _item as! NSExtensionItem
 126             for ip in (item.attachments!) {
 127                 guard let ws = ws else {return}
 128                 // let ip = _ip as! NSItemProvider // required for Xcode <10
 129                 if( ip.hasItemConformingToTypeIdentifier(tPli)) {
 130                     ip.loadItem(forTypeIdentifier:tPli, options:nil) { (_dic, err) in
 131                         guard let _dic = (_dic as? NSDictionary)?[RK] as? [String:String] else {
 132                             play_sound_err()
 133                             ws.showError(
 134                                 title:NSLocalizedString("URL Share Sheet failed", comment: "ShareVC"),
 135                                 message:NSLocalizedString("I got no dictionary to share.", comment: "ShareVC"),
 136                                 showsettings:false
 137                             )
 138                             return
 139                         }
 140                         let kUrl = "url"
 141                         let kTit = "title"
 142                         let kDsc = "description"
 143                         let kTgs = "keywords"
 144                         let kImg = "image"
 145                         guard let _url = URL(string:_dic[kUrl] ?? "") else {
 146                             play_sound_err()
 147                             ws.showError(
 148                                 title:NSLocalizedString("URL Share Sheet failed", comment: "ShareVC"),
 149                                 message:NSLocalizedString("I got no url to share.", comment: "ShareVC"),
 150                                 showsettings:false
 151                             )
 152                             return
 153                         }
 154                         guard let err = err else {
 155                             let t0 = Date()
 156                             cli.get(current.endpoint, current.credential, current.timeout, _url, { (ses, act, ctx, _url, tit, dsc, tgs, pri, tim, seti, err) in
 157                                 guard "" == err else {
 158                                     play_sound_err()
 159                                     ws.showError(
 160                                         title:NSLocalizedString("Can't reach Shaarli", comment: "ShareVC"),
 161                                         message:err,
 162                                         showsettings:true
 163                                     )
 164                                     return
 165                                 }
 166                                 guard URLEmpty != act else {
 167                                     play_sound_err()
 168                                     ws.showError(
 169                                         title:NSLocalizedString("Can't post to Shaarli", comment: "ShareVC"),
 170                                         message:NSLocalizedString("the Shaarli responded an empty linkform action, I don't know where to post to.", comment: "ShareVC"),
 171                                         showsettings:true
 172                                     )
 173                                     return
 174                                 }
 175                                 self.session = ses
 176                                 // should 'old' come out of get( callback(... old) )?
 177                                 let old = isOld(t0, seti, cli.timeShaarli(current.timezone, tim))
 178                                 let dti = _dic[kTit] ?? ""
 179                                 let dde = _dic[kDsc] ?? ""
 180                                 // let dim = URL(string:_dic[kImg] ?? "", relativeTo:_url)
 181                                 let v = old || ("" != tit || "" != dsc)
 182                                     ? (tit, dsc, tgs)
 183                                     : (dti == "" && dde == ""
 184                                         ? (itemTitle.value ?? "", preset.extended, [])
 185                                         : (dti, dde, tagsSplit(_dic[kTgs])) )
 186                                 let r = tagsNormalise(description:v.0, extended:v.1, tags:v.2.union(preset.tags), known:[])
 187                                 DispatchQueue.main.async {
 188                                     ws.action = act
 189                                     ws.ctx = ctx
 190                                     ws.url = _url
 191                                     itemTitle.value = r.description
 192                                     textView.text = "\(r.extended) "
 193                                     itemAudience.value = stringFromPrivacy(pri)
 194                                 }
 195                             })
 196                             return
 197                         }
 198                         ws.showError(
 199                             title:NSLocalizedString("URL Share Sheet failed", comment: "ShareVC"),
 200                             message:err.localizedDescription,
 201                             showsettings:false
 202                         )
 203                     }
 204                 }
 205                 // see predicate from http://stackoverflow.com/a/27932776
 206                 else if( ip.hasItemConformingToTypeIdentifier(tUrl) ) {
 207                     // maybe this whole block can go away
 208                     ip.loadItem(forTypeIdentifier:tUrl, options:nil) { (_url, err) in
 209                         guard let _url = _url as? URL else {
 210                             play_sound_err()
 211                             ws.showError(
 212                                 title:NSLocalizedString("URL Share Sheet failed", comment: "ShareVC"),
 213                                 message:NSLocalizedString("I got no url to share.", comment: "ShareVC"),
 214                                 showsettings:false
 215                             )
 216                             return
 217                         }
 218                         guard let err = err else {
 219                             cli.get(current.endpoint, current.credential, current.timeout, _url, { (ses, act, ctx, _url, tit, dsc, tgs, pri, tim, seti, err) in
 220                                 guard "" == err else {
 221                                     play_sound_err()
 222                                     ws.showError(
 223                                         title:NSLocalizedString("Can't reach Shaarli", comment: "ShareVC"),
 224                                         message:err,
 225                                         showsettings:true
 226                                     )
 227                                     return
 228                                 }
 229                                 guard URLEmpty != act else {
 230                                     play_sound_err()
 231                                     ws.showError(
 232                                         title:NSLocalizedString("Can't post to Shaarli", comment: "ShareVC"),
 233                                         message:NSLocalizedString("the Shaarli responded an empty linkform action, I don't know where to post to.", comment: "ShareVC"),
 234                                         showsettings:true
 235                                     )
 236                                     return
 237                                 }
 238                                 self.session = ses
 239                                 let v = "" == tit && "" == dsc
 240                                     ? (itemTitle.value, preset.extended)
 241                                     : (tit, dsc)
 242                                 let r = tagsNormalise(description:v.0, extended:v.1, tags:tgs.union(preset.tags), known:[])
 243                                 DispatchQueue.main.async {
 244                                     ws.action = act
 245                                     ws.ctx = ctx
 246                                     ws.url = _url
 247                                     itemTitle.value = r.description
 248                                     textView.text = "\(r.extended) "
 249                                     itemAudience.value = stringFromPrivacy(pri)
 250                                 }
 251                             })
 252                             return
 253                         }
 254                         ws.showError(
 255                             title:NSLocalizedString("URL Share Sheet failed", comment: "ShareVC"),
 256                             message:err.localizedDescription,
 257                             showsettings:false
 258                         )
 259                     }
 260                 }
 261                 else if( ip.hasItemConformingToTypeIdentifier(tTxt) ) {
 262                     ip.loadItem(forTypeIdentifier:tTxt, options:nil) { (_txt, err) in
 263                         guard let err = err else {
 264                             debugPrint("done. title:\(itemTitle.value ?? "-") txt:\(String(describing: _txt))")
 265                             return
 266                         }
 267                         ws.showError(
 268                             title:NSLocalizedString("TXT Share Sheet failed", comment: "ShareVC"),
 269                             message:err.localizedDescription,
 270                             showsettings:false
 271                         )
 272                     }
 273                 }
 274             }
 275         }
 276     }
 277
 278     override func didSelectPost() {
 279         debugPrint("didSelectPost")
 280         let c = ShaarliHtmlClient(semver)
 281         guard let tit = itemTitle?.value else {return}
 282         guard let dsc = textView.text else {return}
 283         let pri = privacyFromString((itemAudience?.value)!)
 284         let r = tagsNormalise(description:tit, extended:dsc, tags:[], known:[])
 285         c.add(session!, action, ctx, url, r.description, r.extended, r.tags, pri) { err in
 286             guard "" == err else {
 287                 play_sound_err()
 288                 self.showError(
 289                     title:NSLocalizedString("Share failed", comment: "ShareVC"),
 290                     message:err,
 291                     showsettings:false
 292                 )
 293                 usleep(750 * 1000)
 294                 return
 295             }
 296
 297             play_sound_ok()
 298             // wait until the sound finished
 299             usleep(750 * 1000)
 300             super.didSelectPost()
 301         }
 302         // Inform the host that we're done, so it un-blocks its UI. Note: Alternatively you could call super's -didSelectPost, which will similarly complete the extension context.
 303         // self.extensionContext!.completeRequest(returningItems: [], completionHandler: nil)
 304     }
 305
 306     override func viewDidAppear(_ animated: Bool) {
 307         super.viewDidAppear(animated)
 308
 309         guard nil != current else {
 310             showError(
 311                 title:NSLocalizedString("No Shaarli found", comment:"ShareVC"),
 312                 message:NSLocalizedString("Please add one in the Settings.", comment:"ShareVC"),
 313                 showsettings:true)
 314             return
 315         }
 316
 317         wasTouched = false
 318     }
 319
 320     private func showError(title:String, message:String, showsettings:Bool) {
 321         DispatchQueue.main.async {
 322             let alert = UIAlertController(
 323                 title:title,
 324                 message:message,
 325                 preferredStyle:.alert
 326             )
 327
 328             alert.addAction(UIAlertAction(
 329                 title: NSLocalizedString("Cancel", comment:"ShareVC"),
 330                 style:.cancel,
 331                 handler:{ (_) in
 332                     self.cancel()
 333             }))
 334
 335             if showsettings {
 336                 alert.addAction(UIAlertAction(
 337                     title: NSLocalizedString("Settings", comment:"ShareVC"),
 338                     style:.default,
 339                     handler:{ (_) in
 340                         // https://stackoverflow.com/a/44499222/349514
 341                         DispatchGroup().notify(queue: DispatchQueue.main) {
 342                             let _ = self.openURL(URL(string:"\(SELF_URL_PREFIX):///settings")!)
 343                         }
 344                         self.cancel()
 345                 }))
 346             }
 347
 348             self.present(alert, animated:true, completion:nil)
 349         }
 350     }
 351
 352     override func presentationAnimationDidFinish() {
 353         debugPrint("presentationAnimationDidFinish")
 354     }
 355
 356     override func isContentValid() -> Bool {
 357         debugPrint("isContentValid")
 358         // Do validation of contentText and/or NSExtensionContext attachments here
 359         wasTouched = true
 360         return true
 361     }
 362
 363     // No preview image right upper inside the share dialog.
 364     override func loadPreviewView() -> UIView! {
 365         return nil
 366     }
 367
 368     override func didSelectCancel() {
 369         debugPrint("didSelectCancel")
 370         super.didSelectCancel()
 371     }
 372
 373     // https://stackoverflow.com/a/44499222/349514
 374     // Function must be named exactly like this so a selector can be found by the compiler!
 375     // Anyway - it's another selector in another instance that would be "performed" instead.
 376     @objc private func openURL(_ url: URL) -> Bool {
 377         var rep: UIResponder? = self
 378         while rep != nil {
 379             if let app = rep as? UIApplication {
 380                 return app.perform(#selector(openURL(_:)), with: url) != nil
 381             }
 382             rep = rep?.next
 383         }
 384         return false
 385     }
 386 }