| 1 | local http = require("prosody.net.http"); |
| 2 | local json = require"prosody.util.json"; |
| 3 | local bare_jid = require "prosody.util.jid".bare; |
| 4 | |
| 5 | local current_url = "http://xkcd.com/info.0.json"; |
| 6 | local numbered_url = "http://xkcd.com/%d/info.0.json"; |
| 7 | local formatted_url = "http://xkcd.com/%d/"; |
| 8 | |
| 9 | local strips = {}; |
| 10 | local latest, last_update; |
| 11 | |
| 12 | function riddim.plugins.xkcd2(bot) |
| 13 | bot:hook("commands/xkcd", function(command) |
| 14 | local url = current_url; |
| 15 | local q = command.param; |
| 16 | local strip; |
| 17 | |
| 18 | if q then |
| 19 | local t, num = q:match("^([#\"]?)(%-?%d+)\"?$"); |
| 20 | if t ~= '"' then |
| 21 | num = tonumber(num); |
| 22 | if num and num < 0 then |
| 23 | num = table.maxn(strips) + num; |
| 24 | end |
| 25 | end |
| 26 | strip = strips[num or q:lower()]; |
| 27 | if strip == "" or strip == 404 then |
| 28 | strip = nil |
| 29 | end |
| 30 | if not strip and num then |
| 31 | url = numbered_url:format(num) or url; |
| 32 | end |
| 33 | elseif os.difftime(os.time(), last_update) <= 3 * 60 * 60 then |
| 34 | strip = latest; |
| 35 | end |
| 36 | |
| 37 | if q and not strip then |
| 38 | local pat = q:lower():gsub("[-()%[]", "%%%0") |
| 39 | :gsub("%%(%b[])",function(s) return (#s > 2 and "" or "%") .. s end); |
| 40 | local results = {}; |
| 41 | |
| 42 | for i, strip in ipairs(strips) do |
| 43 | if strip:lower():match(pat) then |
| 44 | results[#results+1] = i; |
| 45 | end |
| 46 | end |
| 47 | |
| 48 | if #results == 0 then |
| 49 | return "Sorry, I couldn't find a match"; |
| 50 | elseif #results == 1 then |
| 51 | strip = results[1]; |
| 52 | else |
| 53 | -- We have more than one match |
| 54 | local ret, title = "Multiple matches:"; |
| 55 | for i, num in ipairs(results) do |
| 56 | title = strips[num]; |
| 57 | ret = string.format("%s %s (%d)%s", ret, title, num, ((i < #results) and ",") or ""); |
| 58 | if i > 5 then ret = ret .. " " .. (#results - 5) .. " more"; break; end |
| 59 | end |
| 60 | return ret; |
| 61 | end |
| 62 | end |
| 63 | |
| 64 | if strip then |
| 65 | local t, n; |
| 66 | if type(strip) == "number" then |
| 67 | t, n = strips[strip], strip; |
| 68 | else |
| 69 | t, n = strip, strips[strip:lower()]; |
| 70 | end |
| 71 | return ("%s, "..formatted_url.." "):format(t, n); |
| 72 | end |
| 73 | |
| 74 | http.request(url, nil, function (data, code) |
| 75 | if code == 200 then |
| 76 | data = json.decode(data); |
| 77 | if not data then return end |
| 78 | local n, t = tonumber(data.num), data.safe_title; |
| 79 | strips[n], strips[t:lower()] = t, n; |
| 80 | if not q then |
| 81 | latest = n; |
| 82 | last_update = os.time(); |
| 83 | end |
| 84 | command:reply(("%s, "..formatted_url.." "):format(t, n)); |
| 85 | elseif code == 404 then |
| 86 | command:reply("Strip not found"); |
| 87 | end |
| 88 | end); |
| 89 | return true; |
| 90 | |
| 91 | end); |
| 92 | |
| 93 | local admin = bot.config.admin; |
| 94 | bot:hook("commands/xkcdlist", function(command) |
| 95 | |
| 96 | local actor = bare_jid(command.sender.real_jid or command.sender.jid); |
| 97 | if actor ~= admin then |
| 98 | return "I shall not"; |
| 99 | end |
| 100 | |
| 101 | local get_next; |
| 102 | local function handle_reply(data, code) |
| 103 | if code == 200 then |
| 104 | data = json.decode(data); |
| 105 | if not data then return end |
| 106 | local n, t = tonumber(data.num), data.safe_title; |
| 107 | strips[n], strips[t:lower()] = t, n; |
| 108 | if n > 1 then |
| 109 | return get_next(n - 1); |
| 110 | end |
| 111 | end |
| 112 | end |
| 113 | function get_next(i) |
| 114 | if strips[i] then return end |
| 115 | local url = i and numbered_url:format(i) or current_url; |
| 116 | http.request(url, nil, handle_reply); |
| 117 | end |
| 118 | get_next(tonumber(command.param)); |
| 119 | return true; |
| 120 | end); |
| 121 | |
| 122 | local function do_load() |
| 123 | local ok, loaded_strips = pcall(dofile,"xkcd-list.lua"); |
| 124 | if ok then |
| 125 | strips = loaded_strips; |
| 126 | return true; |
| 127 | else |
| 128 | return nil, loaded_strips; |
| 129 | end |
| 130 | end |
| 131 | |
| 132 | |
| 133 | bot:hook("commands/xkcdsave", function(command) |
| 134 | |
| 135 | local actor = bare_jid(command.sender.real_jid or command.sender.jid); |
| 136 | if actor ~= admin then |
| 137 | return "I shall not"; |
| 138 | end |
| 139 | |
| 140 | local dump = "return "..require"prosody.util.serialization".serialize(strips); |
| 141 | local f, err = io.open("xkcd-list.lua~", "w"); |
| 142 | if f then |
| 143 | f:write(dump); |
| 144 | f:close(); |
| 145 | os.rename("xkcd-list.lua~", "xkcd-list.lua"); |
| 146 | return "Saved list of strips"; |
| 147 | end |
| 148 | return err; |
| 149 | end); |
| 150 | |
| 151 | bot:hook("commands/xkcdload", function(command) |
| 152 | |
| 153 | local actor = bare_jid(command.sender.real_jid or command.sender.jid); |
| 154 | if actor ~= admin then |
| 155 | return "I shall not"; |
| 156 | end |
| 157 | |
| 158 | local ok, err = do_load() |
| 159 | if not ok then return err end |
| 160 | return "List of strips loaded" |
| 161 | end); |
| 162 | |
| 163 | bot:hook("commands/xkcdreset", function(command) |
| 164 | |
| 165 | local actor = bare_jid(command.sender.real_jid or command.sender.jid); |
| 166 | if actor ~= admin then |
| 167 | return "I shall not"; |
| 168 | end |
| 169 | |
| 170 | strips = {}; |
| 171 | return "List of strips emptied"; |
| 172 | end); |
| 173 | |
| 174 | do_load(); |
| 175 | end |