/**
 * A sample teams plugin
 *
 * @author Kris
 */

import { FS, Utils } from "../../lib";

const SAMPLE_TEAMS = 'config/chat-plugins/sample-teams.json';

interface SampleTeamsData {
	whitelist: { [formatid: string]: RoomID[] };
	/** Teams are stored in the packed format */
	teams: {
		[formatid: string]: {
			uncategorized: { [k: string]: string },
			[category: string]: { [teamName: string]: string },
		},
	};
}

export const teamData: SampleTeamsData = (() => {
	try {
		return JSON.parse(FS(SAMPLE_TEAMS).readIfExistsSync());
	} catch {
		return {
			whitelist: {},
			teams: {},
		};
	}
})();

function save() {
	FS(SAMPLE_TEAMS).writeUpdate(() => JSON.stringify(teamData));
}

for (const formatid in teamData.teams) {
	if (!teamData.teams[formatid].uncategorized) teamData.teams[formatid].uncategorized = {};
}
save();

export const SampleTeams = new class SampleTeams {
	private isRoomStaff(user: User, roomids: RoomID[]) {
		let matched = false;
		if (!roomids?.length) return false;
		for (const roomid of roomids) {
			const room = Rooms.search(roomid);
			// Malformed entry from botched room rename
			if (!room) continue;
			matched = room.auth.isStaff(user.id);
			if (matched) break;
		}
		return matched;
	}

	isDevMod(user: User) {
		return !!Rooms.get('development')?.auth.atLeast(user, '@');
	}

	checkPermissions(user: User, roomids: RoomID[]) {
		// Give Development room mods access to help fix crashes
		return this.isRoomStaff(user, roomids) || user.can('bypassall') || this.isDevMod(user);
	}

	whitelistedRooms(formatid: string, names = false) {
		formatid = this.sanitizeFormat(formatid);
		if (!teamData.whitelist[formatid]?.length) return null;
		return Utils.sortBy(teamData.whitelist[formatid], x => {
			if (!names) return x;
			const room = Rooms.search(x);
			if (!room) return x;
			return room.title;
		});
	}

	whitelistRooms(formatids: string[], roomids: string[]) {
		for (const unsanitizedFormatid of formatids) {
			const formatid = this.sanitizeFormat(unsanitizedFormatid);
			if (!teamData.whitelist[formatid]) teamData.whitelist[formatid] = [];
			for (const roomid of roomids) {
				const targetRoom = Rooms.search(roomid);
				if (!targetRoom?.persist) {
					throw new Chat.ErrorMessage(`Room ${roomid} not found. Check spelling?`);
				}
				if (teamData.whitelist[formatid].includes(targetRoom.roomid)) {
					throw new Chat.ErrorMessage(`Room ${targetRoom.title} is already added.`);
				}
				teamData.whitelist[formatid].push(targetRoom.roomid);
				save();
			}
		}
	}

	unwhitelistRoom(formatid: string, roomid: string) {
		formatid = this.sanitizeFormat(formatid, false);
		const targetRoom = Rooms.search(roomid);
		if (!targetRoom?.persist) throw new Chat.ErrorMessage(`Room ${roomid} not found. Check spelling?`);
		if (!teamData.whitelist[formatid]?.length) throw new Chat.ErrorMessage(`No rooms are whitelisted for ${formatid}.`);
		if (!teamData.whitelist[formatid].includes(targetRoom.roomid)) {
			throw new Chat.ErrorMessage(`Room ${targetRoom.title} isn't whitelisted.`);
		}
		const index = teamData.whitelist[formatid].indexOf(targetRoom.roomid);
		teamData.whitelist[formatid].splice(index, 1);
		if (!teamData.whitelist[formatid].length) delete teamData.whitelist[formatid];
		save();
	}

	sanitizeFormat(formatid: string, checkExists = false) {
		const format = Dex.formats.get(formatid);
		if (checkExists && format.effectType !== 'Format') {
			throw new Chat.ErrorMessage(`Format "${formatid.trim()}" not found. Check spelling?`);
		}
		if (format.team) {
			throw new Chat.ErrorMessage(`Formats with computer-generated teams can't have team storage.`);
		}
		return format.id;
	}

	initializeFormat(formatid: string) {
		if (!teamData.teams[formatid]) {
			teamData.teams[formatid] = { uncategorized: {} };
			save();
		}
	}

	addCategory(user: User, formatid: string, category: string) {
		formatid = this.sanitizeFormat(formatid);
		if (!this.checkPermissions(user, teamData.whitelist[formatid])) {
			let rankNeeded = `a global administrator`;
			if (teamData.whitelist[formatid]) {
				rankNeeded = `staff in ${Chat.toListString(teamData.whitelist[formatid], "or")}`;
			}
			throw new Chat.ErrorMessage(`Access denied. You need to be ${rankNeeded} to add teams for ${formatid}`);
		}
		category = category.trim();
		this.initializeFormat(formatid);
		if (this.findCategory(formatid, category)) {
			throw new Chat.ErrorMessage(`The category named ${category} already exists.`);
		}
		teamData.teams[formatid][category] = {};
		save();
	}

	removeCategory(user: User, formatid: string, category: string) {
		formatid = this.sanitizeFormat(formatid, false);
		if (!this.checkPermissions(user, teamData.whitelist[formatid])) {
			let rankNeeded = `a global administrator`;
			if (teamData.whitelist[formatid]) {
				rankNeeded = `staff in ${Chat.toListString(teamData.whitelist[formatid], "or")}`;
			}
			throw new Chat.ErrorMessage(`Access denied. You need to be ${rankNeeded} to add teams for ${formatid}`);
		}
		const categoryName = this.findCategory(formatid, category);
		if (!categoryName) {
			throw new Chat.ErrorMessage(`There's no category named "${category.trim()}" for the format ${formatid}.`);
		}
		delete teamData.teams[formatid][categoryName];
		save();
	}

	/**
	 * @param user
	 * @param formatid
	 * @param teamName
	 * @param team - Can be a team in the packed, JSON, or exported format
	 * @param category - Category the team will go in, defaults to uncategorized
	 */
	addTeam(user: User, formatid: string, teamName: string, team: string, category = "uncategorized") {
		formatid = this.sanitizeFormat(formatid);
		if (!this.checkPermissions(user, teamData.whitelist[formatid])) {
			let rankNeeded = `a global administrator`;
			if (teamData.whitelist[formatid]?.length) {
				rankNeeded = `staff in ${Chat.toListString(teamData.whitelist[formatid], "or")}`;
			}
			throw new Chat.ErrorMessage(`Access denied. You need to be ${rankNeeded} to add teams for ${formatid}`);
		}
		teamName = teamName.trim();
		category = category.trim();
		this.initializeFormat(formatid);
		if (this.findTeamName(formatid, category, teamName)) {
			throw new Chat.ErrorMessage(`There is already a team for ${formatid} with the name ${teamName} in the ${category} category.`);
		}
		if (!teamData.teams[formatid][category]) this.addCategory(user, formatid, category);
		teamData.teams[formatid][category][teamName] = Teams.pack(Teams.import(team.trim()));
		save();
		return teamData.teams[formatid][category][teamName];
	}

	removeTeam(user: User, formatid: string, teamid: string, category: string) {
		formatid = this.sanitizeFormat(formatid, false);
		category = category.trim();
		if (!this.checkPermissions(user, teamData.whitelist[formatid])) {
			let required = `an administrator`;
			if (teamData.whitelist[formatid]) {
				required = `staff in ${Chat.toListString(teamData.whitelist[formatid], "or")}`;
			}
			throw new Chat.ErrorMessage(`Access denied. You need to be ${required} to add teams for ${formatid}`);
		}
		const categoryName = this.findCategory(formatid, category);
		if (!categoryName) {
			throw new Chat.ErrorMessage(`There are no teams for ${formatid} under the category ${category.trim()}. Check spelling?`);
		}
		const teamName = this.findTeamName(formatid, category, teamid);
		if (!teamName) {
			throw new Chat.ErrorMessage(`There is no team for ${formatid} with the name of "${teamid}". Check spelling?`);
		}
		const oldTeam = teamData.teams[formatid][categoryName][teamName];
		delete teamData.teams[formatid][categoryName][teamName];
		if (!Object.keys(teamData.teams[formatid][categoryName]).length) delete teamData.teams[formatid][categoryName];
		if (!Object.keys(teamData.teams[formatid]).filter(x => x !== 'uncategorized').length) delete teamData.teams[formatid];
		save();
		return oldTeam;
	}

	formatTeam(teamName: string, teamStr: string, broadcasting = false) {
		const team = Teams.unpack(teamStr);
		if (!team) return `Team is not correctly formatted. PM room staff to fix the formatting.`;
		let buf = ``;
		if (!broadcasting) {
			buf += `<center><strong style="letter-spacing:1.2pt">${team.map(x => `<psicon pokemon="${x.species}" />`).join('')}`;
			buf += `<br />${Utils.escapeHTML(teamName.toUpperCase())}</strong></center>`;
			buf += Chat.getReadmoreCodeBlock(Teams.export(team).trim());
		} else {
			buf += `<details><summary>${team.map(x => `<psicon pokemon="${x.species}" />`).join('')} &ndash; ${Utils.escapeHTML(teamName)}</summary>`;
			buf += `<code style="white-space: pre-wrap; display: table; tab-size: 3">${Teams.export(team).trim().replace(/\n/g, '<br />')}</code></details>`;
		}
		return buf;
	}

	modlog(context: Chat.CommandContext, formatid: string, action: string, note: string, log: string) {
		formatid = this.sanitizeFormat(formatid);
		const whitelistedRooms = this.whitelistedRooms(formatid);
		if (whitelistedRooms?.length) {
			for (const roomid of whitelistedRooms) {
				const room = Rooms.get(roomid);
				if (!room) continue;
				context.room = room;
				context.modlog(action, null, `${formatid}: ${note}`);
				context.privateModAction(log);
			}
		} else {
			context.room = Rooms.get('staff') || null;
			context.globalModlog(action, null, `${formatid}: ${note}`);
			context.privateGlobalModAction(log);
		}
	}

	/**
	 * Returns the category name of the provided category ID if there is one.
	 */
	findCategory(formatid: string, categoryid: string) {
		formatid = toID(formatid);
		categoryid = toID(categoryid);
		let match: string | null = null;
		for (const categoryName in teamData.teams[formatid] || {}) {
			if (toID(categoryName) === categoryid) {
				match = categoryName;
				break;
			}
		}
		return match;
	}

	findTeamName(formatid: string, categoryid: string, teamid: string) {
		const categoryName = this.findCategory(formatid, categoryid);
		if (!categoryName) return null;
		let match: string | null = null;
		for (const teamName in teamData.teams[formatid][categoryName] || {}) {
			if (toID(teamName) === teamid) {
				match = teamName;
				break;
			}
		}
		return match;
	}

	getFormatName(formatid: string) {
		return Dex.formats.get(formatid).exists ? Dex.formats.get(formatid).name : formatid;
	}

	destroy() {
		for (const formatid in teamData.whitelist) {
			for (const [i, roomid] of teamData.whitelist[formatid].entries()) {
				const room = Rooms.search(roomid);
				if (room) continue;
				teamData.whitelist[formatid].splice(i, 1);
				if (!teamData.whitelist[formatid].length) delete teamData.whitelist[formatid];
				save();
			}
		}
	}
};

export const destroy = SampleTeams.destroy;

export const handlers: Chat.Handlers = {
	onRenameRoom(oldID, newID) {
		for (const formatid in teamData.whitelist) {
			if (!SampleTeams.whitelistedRooms(formatid)?.includes(oldID)) continue;
			SampleTeams.unwhitelistRoom(formatid, oldID);
			SampleTeams.whitelistRooms([formatid], [newID]);
		}
	},
};

export const commands: Chat.ChatCommands = {
	sampleteams(target, room, user) {
		this.sendReply(`Sample Teams are being deprecated. Please do \`\`/tier [formatid]\`\` to view their resources.`);
		this.sendReply(`If you are room staff for a room and would like to access old samples for your room's formats, please contact an admin.`);
	},
	/* sampleteams: {
		''(target, room, user) {
			this.runBroadcast();
			let [formatid, category] = target.split(',');
			if (!this.broadcasting) {
				if (!formatid) return this.parse(`/j view-sampleteams-view`);
				formatid = SampleTeams.sanitizeFormat(formatid);
				if (!category) return this.parse(`/j view-sampleteams-view-${formatid}`);
				const categoryName = SampleTeams.findCategory(formatid, category);
				return this.parse(`/j view-sampleteams-view-${formatid}${categoryName ? '-' + toID(categoryName) : ''}`);
			}
			if (!formatid) return this.parse(`/help sampleteams`);
			formatid = SampleTeams.sanitizeFormat(formatid);
			if (!teamData.teams[formatid]) {
				throw new Chat.ErrorMessage(`No teams for ${SampleTeams.getFormatName(formatid)} found. Check spelling?`);
			}
			let buf = ``;
			if (!category) {
				for (const categoryName in teamData.teams[formatid]) {
					if (!Object.keys(teamData.teams[formatid][categoryName]).length) continue;
					if (buf) buf += `<hr />`;
					buf += `<details${Object.keys(teamData.teams[formatid]).length < 2 ? ` open` : ``}><summary><strong style="letter-spacing:1.2pt">${categoryName.toUpperCase()}</strong></summary>`;
					for (const [i, teamName] of Object.keys(teamData.teams[formatid][categoryName]).entries()) {
						if (i) buf += `<hr />`;
						buf += SampleTeams.formatTeam(teamName, teamData.teams[formatid][categoryName][teamName], true);
					}
					buf += `</details>`;
				}
				if (!buf) {
					throw new Chat.ErrorMessage(`No teams for ${SampleTeams.getFormatName(formatid)} found. Check spelling?`);
				} else {
					buf = `<center><h3>Sample Teams for ${SampleTeams.getFormatName(formatid)}</h3></center><hr />${buf}`;
				}
			} else {
				const categoryName = SampleTeams.findCategory(formatid, category);
				if (!categoryName) {
					throw new Chat.ErrorMessage(`No teams for ${SampleTeams.getFormatName(formatid)} in the ${category} category found. Check spelling?`);
				}
				for (const teamName in teamData.teams[formatid][categoryName]) {
					buf += SampleTeams.formatTeam(teamName, teamData.teams[formatid][categoryName][teamName], true);
				}
			}
			this.sendReplyBox(buf);
		},
		addcategory(target, room, user) {
			let [formatid, categoryName] = target.split(',');
			if (!(formatid && categoryName)) return this.parse(`/help sampleteams`);
			if (!categoryName.trim()) categoryName = "uncategorized";
			SampleTeams.addCategory(user, formatid, categoryName.trim());
			SampleTeams.modlog(
				this, formatid, 'ADDTEAMCATEGORY', categoryName.trim(),
				`${user.name} added ${categoryName.trim()} as a category for ${formatid}.`
			);
			this.sendReply(`Added ${categoryName.trim()} as a category for ${formatid}.`);
		},
		removecategory(target, room, user) {
			const [formatid, categoryName] = target.split(',');
			if (!(formatid && categoryName)) return this.parse(`/help sampleteams`);
			if (toID(categoryName) === 'uncategorized') {
				throw new Chat.ErrorMessage(`The uncategorized category cannot be removed.`);
			}
			SampleTeams.removeCategory(user, formatid, categoryName);
			SampleTeams.modlog(
				this, formatid, 'REMOVETEAMCATEGORY', categoryName.trim(),
				`${user.name} removed ${categoryName.trim()} as a category for ${formatid}.`
			);
			this.sendReply(`Removed ${categoryName.trim()} as a category for ${formatid}.`);
		},
		add(target, room, user) {
			const [formatid, category, teamName, team] = target.split(',');
			if (!(formatid && category?.trim() && teamName && team)) return this.parse('/j view-sampleteams-add');
			const packedTeam = SampleTeams.addTeam(user, formatid, teamName, team, category);
			SampleTeams.modlog(
				this, formatid, 'ADDTEAM', `${category}: ${teamName}: ${packedTeam}`,
				`${user.name} added a team for ${formatid} in the ${category} category.`
			);
			this.sendReply(`Added a team for ${formatid} in the ${category} category.`);
		},
		remove(target, room, user) {
			const [formatid, category, teamName] = target.split(',').map(x => x.trim());
			if (!(formatid && category && teamName)) return this.parse(`/help sampleteams`);
			const team = SampleTeams.removeTeam(user, formatid, toID(teamName), category);
			SampleTeams.modlog(
				this, formatid, 'REMOVETEAM', `${category}: ${teamName}: ${team}`,
				`${user.name} removed a team from ${formatid} in the ${category} category.`
			);
			this.sendReply(`Removed a team from ${formatid} in the ${category} category.`);
		},
		whitelist: {
			add(target, room, user) {
				// Allow development roommods to whitelist to help debug
				if (!SampleTeams.isDevMod(user)) {
					this.checkCan('bypassall');
				}
				const [formatids, roomids] = target.split('|').map(x => x.split(','));
				if (!(formatids?.length && roomids?.length)) return this.parse(`/help sampleteams`);
				SampleTeams.whitelistRooms(formatids, roomids);
				this.privateGlobalModAction(`${user.name} whitelisted ${Chat.toListString(roomids.map(x => Rooms.search(x)!.title))} to handle sample teams for ${Chat.toListString(formatids)}.`);
				this.globalModlog(`SAMPLETEAMS WHITELIST`, null, roomids.join(', '));
				this.sendReply(`Whitelisted ${Chat.toListString(roomids)} to handle sample teams for ${Chat.toListString(formatids)}.`);
			},
			remove(target, room, user) {
				// Allow development roommods to whitelist to help debug
				if (!SampleTeams.isDevMod(user)) {
					this.checkCan('bypassall');
				}
				const [formatid, roomid] = target.split(',');
				if (!(formatid && roomid)) return this.parse(`/help sampleteams`);
				SampleTeams.unwhitelistRoom(formatid, roomid);
				this.refreshPage('sampleteams-whitelist');
			},
			'': 'view',
			view(target, room, user) {
				// Allow development roommods to whitelist to help debug
				if (!SampleTeams.isDevMod(user)) {
					this.checkCan('bypassall');
				}
				this.parse(`/j view-sampleteams-whitelist`);
			},
		},
	},
	sampleteamshelp: [
		`/sampleteams [format] - Lists the sample teams for [format], if there are any.`,
		`/sampleteams addcategory/removecategory [format], [category] - Adds/removes categories for [format].`,
		`/sampleteams add - Pulls up the interface to add sample teams. Requires: Room staff in dedicated tier room, ~`,
		`/sampleteams remove [format], [category], [team name] - Removes a sample team for [format] in [category].`,
		`/sampleteams whitelist add [formatid], [formatid] | [roomid], [roomid], ... - Whitelists room staff for the provided roomids to add sample teams. Requires: ~`,
		`/sampleteams whitelist remove [formatid], [roomid] - Unwhitelists room staff for the provided room to add sample teams. Requires: ~`,
	], */
};