import {Adapter} from "./adapter";

function _(key: string, value: any | null | undefined = undefined): any | null {
  const x = <any>window;
  if (value !== undefined) {
    x[key] = value;
  }
  return x[key];
}

function $(id: string): HTMLElement | null {
  return document.getElementById(id);
}

function main():void  {
  const settings = _("settings", JSON.parse(localStorage.getItem("settings") ?? "{}"));
  const adapters = _("adapters", []);
  
  if (settings != null) {
    for (let s of settings.adapters) {
      let a: Adapter = Adapter.create()
      switch (s.protocol) {
        case "nostr": 
          adapters.push(Adapter.toNostr(a, s));
          break;
        case "mastodon":
          adapters.push(Adapter.toMasto(a, s));
      }
    } 
  } else {
    console.log("no settings exist for this client");
    _("settings", { adapters: [] });
  }
};

function showSettings():void {
  // tab bar hidden
  const tabbar = $("tabbar");
  if (tabbar) {
  tabbar.style.display = "none";
  }
  
  // tabcontent to show settings ui
  const tabcontent = $("tabcontent");
  const adapters = _("adapters") as Adapter[];
  
  if (tabcontent) {
  let html = "<p>this is our settings dialogue</p>";
  html += "<button onclick='addAdapter()'>New</button>";
  html += adapters.reduce((self: string, a: Adapter) => {
    self += `<li><a href='#' onclick='editAdapter(${a.nickname})'>${a.nickname}</a></li>`
    return self;
  }, "<ul id='settings_adapterlist'>");
  html += "</ul>";
  html += "<button onclick='saveSettings()'>save</button>";
  tabcontent.innerHTML = html;
  }
}

function addAdapter(): void {
  const tabcontent = $("tabcontent");
  if (tabcontent) {
  // dropdown for protocol
  let html = "<select id='settings_newadapter_protocolselect' onchange='fillAdapterProtocolOptions()'>";
  html += [ "nostr", "mastodon" ].reduce((self, p)=>{
    self += `<option value='${p}'>${p}</option>`;
    return self;
  }, "");
  html += "</select>";
  // depending on protocol, different fields
  // nostr: privkey, initial relays
  html += "<div id='settings_newadapter_protocoloptions'>";
  html += "  <label>nickname<input id='settings_newadapter_nickname'/></label>";
  html += "  <label>privkey<input id='settings_newadapter_nostr_privkey'/></label>";
  html += "  <label>default relays<input id='settings_newadapter_nostr_default_relays'/></label>";
  html += "</div>";
  // masto/AP: server, username, pw/apikey
  // save button, back button
  html += "<button onclick='saveAdapter()'>Add</button>";
  html += "<button onclick='showSettings()'>Back</button>";
  
  tabcontent.innerHTML = html;
  }
}

function fillAdapterProtocolOptions(): void {
  const proto = $("settings_newadapter_protocolselect") as HTMLSelectElement;
  
  let html = "";
  
  switch(proto?.options[proto.selectedIndex].value) {
    case "nostr":
      html += "  <label>nickname<input id='settings_newadapter_nickname'/></label>";
      html += "  <label>privkey<input id='settings_newadapter_nostr_privkey'/></label>";
      html += "  <label>default relays<input id='settings_newadapter_nostr_default_relays'/></label>";
      break;
    case "mastodon":
      html += "  <label>nickname<input id='settings_newadapter_nickname'/></label>";
      html += "  <label>server<input id='settings_newadapter_masto_server'/></label>";
      html += "  <label>API key<input id='settings_newadapter_masto_apikey'/></label>";
      break;
  }
  
  
  const div = $("settings_newadapter_protocoloptions");
  if (div) {
    div.innerHTML = html;
  }
}

function saveSettings(): void {
  const settings = _("settings");
  if (settings) {
    localStorage.setItem("settings", JSON.stringify(settings));
  }
  // tab bar hidden
  const tabbar = $("tabbar");
  if (tabbar) {
    tabbar.style.display = "block";
  }
  
  // tabcontent to show settings ui
  const tabcontent = $("tabcontent");
  if (tabcontent) {
    tabcontent.innerHTML = "";
  }
}

function saveAdapter(): void {
  let self: any = {};
  // get selected adapter protocol
  const proto = $("settings_newadapter_protocolselect") as HTMLSelectElement;
  console.log(proto.options[proto.selectedIndex]);
  
  
  const nickname = ($("settings_newadapter_nickname") as HTMLInputElement)?.value ?? "" ;
  
  // switch protocol
  switch (proto.options[proto.selectedIndex].value) {
    case "nostr":
        const privkey = ($("settings_newadapter_nostr_privkey") as HTMLInputElement)?.value ?? "";
        const relays = ($("settings_newadapter_nostr_default_relays") as HTMLInputElement)?.value ?? "";
        self = { nickname: nickname, protocol: "nostr", privkey: privkey, relays: relays.split(",").map(r=>r.trim()) };
      break;
    case "mastodon":
      const server = ($("settings_newadapter_masto_server") as HTMLInputElement)?.value ?? "";
      const apiKey = ($("settings_newadapter_masto_apikey") as HTMLInputElement)?.value ?? "";
      self = { nickname: nickname, protocol: "mastodon", server: server, apiKey: apiKey };
      break;
  }
  const settings = _("settings");
  const adapters = _("adapters");
  if (settings && adapters) {
    settings.adapters.push(self);
    let a: Adapter = Adapter.create();
    switch (self.protocol) {
      case "nostr":
        adapters.push(Adapter.toNostr(a, self));
        break;
      case "mastodon":
        adapters.push(Adapter.toMasto(a, self));
        break;
    }
    localStorage.setItem("settings", JSON.stringify(settings));
    showSettings();
  }
}

_("addAdapter", addAdapter);
_("saveAdapter", saveAdapter);
_("fillAdapterProtocolOptions", fillAdapterProtocolOptions);
_("showSettings", showSettings);
_("saveSettings", saveSettings);

main();