using System.Linq; using System.Threading.Tasks; using PluralKit.Core; namespace PluralKit.Bot { public class MemberProxy { private IDataStore _data; public MemberProxy(IDataStore data) { _data = data; } public async Task Proxy(Context ctx, PKMember target) { if (ctx.System == null) throw Errors.NoSystemError; if (target.System != ctx.System.Id) throw Errors.NotOwnMemberError; ProxyTag ParseProxyTags(string exampleProxy) { // // Make sure there's one and only one instance of "text" in the example proxy given var prefixAndSuffix = exampleProxy.Split("text"); if (prefixAndSuffix.Length < 2) throw Errors.ProxyMustHaveText; if (prefixAndSuffix.Length > 2) throw Errors.ProxyMultipleText; return new ProxyTag(prefixAndSuffix[0], prefixAndSuffix[1]); } async Task WarnOnConflict(ProxyTag newTag) { var conflicts = (await _data.GetConflictingProxies(ctx.System, newTag)) .Where(m => m.Id != target.Id) .ToList(); if (conflicts.Count <= 0) return true; var conflictList = conflicts.Select(m => $"- **{m.NameFor(ctx)}**"); var msg = await ctx.Reply( $"{Emojis.Warn} The following members have conflicting proxy tags:\n{string.Join('\n', conflictList)}\nDo you want to proceed anyway?"); return await ctx.PromptYesNo(msg); } // "Sub"command: clear flag if (ctx.Match("clear", "purge", "clean", "removeall") || ctx.MatchFlag("c", "clear")) { // If we already have multiple tags, this would clear everything, so prompt that if (target.ProxyTags.Count > 1) { var msg = await ctx.Reply( $"{Emojis.Warn} You already have multiple proxy tags set: {target.ProxyTagsString()}\nDo you want to clear them all?"); if (!await ctx.PromptYesNo(msg)) throw Errors.GenericCancelled(); } target.ProxyTags = new ProxyTag[] { }; await _data.SaveMember(target); await ctx.Reply($"{Emojis.Success} Proxy tags cleared."); } // "Sub"command: no arguments; will print proxy tags else if (!ctx.HasNext(skipFlags: false)) { if (target.ProxyTags.Count == 0) await ctx.Reply("This member does not have any proxy tags."); else { var tags = string.Join("\n", target.ProxyTags.Select(t => $"`{t.ProxyString}`")); await ctx.Reply($"This member's proxy tags are:\n{tags}"); } } // Subcommand: "add" else if (ctx.Match("add", "append")) { if (!ctx.HasNext(skipFlags: false)) throw new PKSyntaxError("You must pass an example proxy to add (eg. `[text]` or `J:text`)."); var tagToAdd = ParseProxyTags(ctx.RemainderOrNull(skipFlags: false)); if (tagToAdd.IsEmpty) throw Errors.EmptyProxyTags(target); if (target.ProxyTags.Contains(tagToAdd)) throw Errors.ProxyTagAlreadyExists(tagToAdd, target); if (!await WarnOnConflict(tagToAdd)) throw Errors.GenericCancelled(); // It's not guaranteed the list's mutable, so we force it to be target.ProxyTags = target.ProxyTags.ToList(); target.ProxyTags.Add(tagToAdd); await _data.SaveMember(target); await ctx.Reply($"{Emojis.Success} Added proxy tags `{tagToAdd.ProxyString}`."); } // Subcommand: "remove" else if (ctx.Match("remove", "delete")) { if (!ctx.HasNext(skipFlags: false)) throw new PKSyntaxError("You must pass a proxy tag to remove (eg. `[text]` or `J:text`)."); var tagToRemove = ParseProxyTags(ctx.RemainderOrNull(skipFlags: false)); if (tagToRemove.IsEmpty) throw Errors.EmptyProxyTags(target); if (!target.ProxyTags.Contains(tagToRemove)) throw Errors.ProxyTagDoesNotExist(tagToRemove, target); // It's not guaranteed the list's mutable, so we force it to be target.ProxyTags = target.ProxyTags.ToList(); target.ProxyTags.Remove(tagToRemove); await _data.SaveMember(target); await ctx.Reply($"{Emojis.Success} Removed proxy tags `{tagToRemove.ProxyString}`."); } // Subcommand: bare proxy tag given else { var requestedTag = ParseProxyTags(ctx.RemainderOrNull(skipFlags: false)); if (requestedTag.IsEmpty) throw Errors.EmptyProxyTags(target); // This is mostly a legacy command, so it's gonna warn if there's // already more than one proxy tag. if (target.ProxyTags.Count > 1) { var msg = await ctx.Reply($"This member already has more than one proxy tag set: {target.ProxyTagsString()}\nDo you want to replace them?"); if (!await ctx.PromptYesNo(msg)) throw Errors.GenericCancelled(); } if (!await WarnOnConflict(requestedTag)) throw Errors.GenericCancelled(); target.ProxyTags = new[] {requestedTag}; await _data.SaveMember(target); await ctx.Reply($"{Emojis.Success} Member proxy tags set to `{requestedTag.ProxyString}`."); } } } }