package com.dre.brewery.filedata;

import java.io.BufferedReader;
import java.io.BufferedWriter;
import java.io.File;
import java.io.FileReader;
import java.io.FileWriter;
import java.io.IOException;
import java.util.ArrayList;
import java.util.Arrays;

import com.dre.brewery.P;

public class ConfigUpdater {

	private ArrayList<String> config = new ArrayList<String>();
	private File file;

	public ConfigUpdater(File file) {
		this.file = file;
		getConfigString();
	}

	// Returns the index of the line that starts with 'lineStart', returns -1 if not found;
	public int indexOfStart(String lineStart) {
		for (int i = 0; i < config.size(); i++) {
			if (config.get(i).startsWith(lineStart)) {
				return i;
			}
		}
		return -1;
	}

	// Adds some lines to the end
	public void appendLines(String... lines) {
		config.addAll(Arrays.asList(lines));
	}

	// Replaces the line at the index with the new Line
	public void setLine(int index, String newLine) {
		config.set(index, newLine);
	}

	// adds some Lines at the index
	public void addLines(int index, String... newLines) {
		config.addAll(index, Arrays.asList(newLines));
	}

	public void saveConfig() {
		StringBuilder stringBuilder = new StringBuilder("");
		for (String line : config) {
			stringBuilder.append(line).append("\n");
		}
		String configString = stringBuilder.toString().trim();

		try {
			BufferedWriter writer = new BufferedWriter(new FileWriter(file));
			writer.write(configString);
			writer.flush();
			writer.close();

		} catch (IOException e) {
			e.printStackTrace();
		}
	}

	private void getConfigString() {
		try {
			BufferedReader reader = new BufferedReader(new FileReader(file));
			String currentLine;
			while((currentLine = reader.readLine()) != null) {
				config.add(currentLine);
			}
			reader.close();
		} catch (IOException e) {
			e.printStackTrace();
		}
	}



	// ---- Updating to newer Versions ----

	// Update from a specified Config version and language to the newest version
	public void update(String fromVersion, String lang) {
		if (fromVersion.equals("0.5")) {
			// Version 0.5 was only released for de, but with en as setting, so default to de
			if (!lang.equals("de")) {
				lang = "de";
			}
		}

		if (fromVersion.equals("0.5") || fromVersion.equals("1.0")) {
			if (lang.equals("de")) {
				update05de();
			} else {
				update10en();
			}
			fromVersion = "1.1";
		}
		if (fromVersion.equals("1.1") || fromVersion.equals("1.1.1")) {
			if (lang.equals("de")) {
				update11de();
			} else {
				update11en();
			}
			fromVersion = "1.2";
		}

		if (fromVersion.equals("1.2")) {
			if (lang.equals("de")) {
				update12de();
			} else {
				update12en();
			}
			fromVersion = "1.3";
		}

		if (fromVersion.equals("1.3")) {
			if (lang.equals("de")) {
				update13de();
			} else {
				update13en();
			}
			fromVersion = "1.3.1";
		}

		if (!fromVersion.equals("1.3.1")) {
			P.p.log(P.p.languageReader.get("Error_ConfigUpdate", fromVersion));
			return;
		}
		saveConfig();
	}

	// Update the Version String
	private void updateVersion(String to) {
		int index = indexOfStart("version");
		String line = "version: '" + to + "'";
		if (index != -1) {
			setLine(index, line);
		} else {
			index = indexOfStart("# Config Version");
			if (index == -1) {
				index = indexOfStart("autosave");
			}
			if (index == -1) {
				appendLines(line);
			} else {
				addLines(index, line);
			}
		}
	}

	// Updates de from 0.5 to 1.1
	private void update05de() {
		updateVersion("1.1");

		// Default language to de
		int index = indexOfStart("language: en");
		if (index != -1) {
			setLine(index, "language: de");
			P.p.language = "de";
		}

		// Add the new entries for the Word Distortion above the words section
		String[] entries = {
			"# -- Chat Veränderungs Einstellungen --",
			"",
			"# Text nach den angegebenen Kommandos wird bei Trunkenheit ebenfalls Verändert (Liste) [- /gl]",
			"distortCommands:",
			"- /gl",
			"- /global",
			"- /fl",
			"- /s",
			"- /letter",
			"",
			"# Geschriebenen Text auf Schildern bei Trunkenheit verändern [false]",
			"distortSignText: false",
			"",
			"# Text, der zwischen diesen Buchstaben steht, wird nicht verändert (\",\" als Trennung verwenden) (Liste) [- '[,]']",
			"distortBypass:",
			"- '*,*'",
			"- '[,]'",
			""
			};
		index = indexOfStart("# words");
		if (index == -1) {
			index = indexOfStart("# Diese werden von oben");
		}
		if (index == -1) {
			index = indexOfStart("# replace");
		}
		if (index == -1) {
			index = indexOfStart("words:");
		}
		if (index == -1) {
			appendLines(entries);
		} else {
			addLines(index, entries);
		}

		// Add some new separators for overview
		String line = "# -- Verschiedene Einstellungen --";
		index = indexOfStart("# Verschiedene Einstellungen");
		if (index != -1) {
			setLine(index, line);
		}

		line = "# -- Rezepte für Getränke --";
		index = indexOfStart("# Rezepte für Getränke");
		if (index != -1) {
			setLine(index, line);
		}
	}

	// Updates en from 1.0 to 1.1
	private void update10en() {
		// Update version String
		updateVersion("1.1");

		// Add the new entries for the Word Distortion above the words section
		String[] entries = {
			"# -- Chat Distortion Settings --",
			"",
			"# Text after specified commands will be distorted when drunk (list) [- /gl]",
			"distortCommands:",
			"- /gl",
			"- /global",
			"- /fl",
			"- /s",
			"- /letter",
			"",
			"# Distort the Text written on a Sign while drunk [false]",
			"distortSignText: false",
			"",
			"# Enclose a text with these Letters to bypass Chat Distortion (Use \",\" as Separator) (list) [- '[,]']",
			"distortBypass:",
			"- '*,*'",
			"- '[,]'",
			""
			};
		int index = indexOfStart("# words");
		if (index == -1) {
			index = indexOfStart("# Will be processed");
		}
		if (index == -1) {
			index = indexOfStart("# replace");
		}
		if (index == -1) {
			index = indexOfStart("words:");
		}
		if (index == -1) {
			appendLines(entries);
		} else {
			addLines(index, entries);
		}

		// Add some new separators for overview
		String line = "# -- Settings --";
		index = indexOfStart("# Settings");
		if (index != -1) {
			setLine(index, line);
		}

		line = "# -- Recipes for Potions --";
		index = indexOfStart("# Recipes for Potions");
		if (index != -1) {
			setLine(index, line);
		}
	}

	// Updates de from 1.1 to 1.2
	private void update11de() {
		updateVersion("1.2");

		int index = indexOfStart("# Das Item kann nicht aufgesammelt werden");
		if (index != -1) {
			setLine(index, "# Das Item kann nicht aufgesammelt werden und bleibt bis zum Despawnen liegen. (Achtung: Kann nach Serverrestart aufgesammelt werden!)");
		}

		// Add the BarrelAccess Setting
		String[] lines = {
				"# Ob große Fässer an jedem Block geöffnet werden können, nicht nur an Zapfhahn und Schild. Bei kleinen Fässern geht dies immer. [true]",
				"openLargeBarrelEverywhere: true",
				""
		};
		index = indexOfStart("colorInBrewer") + 2;
		if (index == 1) {
			index = indexOfStart("colorInBarrels") + 2;
		}
		if (index == 1) {
			index = indexOfStart("# Autosave");
		}
		if (index == -1) {
			index = indexOfStart("language") + 2;
		}
		if (index == 1) {
			addLines(3, lines);
		} else {
			addLines(index, lines);
		}

		// Add Plugin Support Settings
		lines = new String[] {
				"",
				"# -- Plugin Kompatiblität --",
				"",
				"# Andere Plugins (wenn installiert) nach Rechten zum öffnen von Fässern checken [true]",
				"useWorldGuard: true",
				"useLWC: true",
				"useGriefPrevention: true",
				"",
				"# Änderungen an Fassinventaren mit LogBlock aufzeichen [true]",
				"useLogBlock: true",
				"",
				""
		};
		index = indexOfStart("# -- Chat Veränderungs Einstellungen");
		if (index == -1) {
			index = indexOfStart("# words");
		}
		if (index == -1) {
			index = indexOfStart("distortCommands");
			if (index > 4) {
				index -= 4;
			}
		}
		if (index != -1) {
			addLines(index, lines);
		} else {
			appendLines(lines);
		}
	}

	// Updates en from 1.1 to 1.2
	private void update11en() {
		updateVersion("1.2");

		int index = indexOfStart("# The item can not be collected");
		if (index != -1) {
			setLine(index, "# The item can not be collected and stays on the ground until it despawns. (Warning: Can be collected after Server restart!)");
		}

		// Add the BarrelAccess Setting
		String[] lines = {
				"# If a Large Barrel can be opened by clicking on any of its blocks, not just Spigot or Sign. This is always true for Small Barrels. [true]",
				"openLargeBarrelEverywhere: true",
				""
		};
		index = indexOfStart("colorInBrewer") + 2;
		if (index == 1) {
			index = indexOfStart("colorInBarrels") + 2;
		}
		if (index == 1) {
			index = indexOfStart("# Autosave");
		}
		if (index == -1) {
			index = indexOfStart("language") + 2;
		}
		if (index == 1) {
			addLines(3, lines);
		} else {
			addLines(index, lines);
		}

		// Add Plugin Support Settings
		lines = new String[] {
				"",
				"# -- Plugin Compatibility --",
				"",
				"# Enable checking of other Plugins (if installed) for Barrel Permissions [true]",
				"useWorldGuard: true",
				"useLWC: true",
				"useGriefPrevention: true",
				"",
				"# Enable the Logging of Barrel Inventories to LogBlock [true]",
				"useLogBlock: true",
				"",
				""
		};
		index = indexOfStart("# -- Chat Distortion Settings");
		if (index == -1) {
			index = indexOfStart("# words");
		}
		if (index == -1) {
			index = indexOfStart("distortCommands");
			if (index > 4) {
				index -= 4;
			}
		}
		if (index != -1) {
			addLines(index, lines);
		} else {
			appendLines(lines);
		}
	}

	// Update de from 1.2 to 1.3
	private void update12de() {
		updateVersion("1.3");

		// Add the new Wood Types to the Description
		int index = indexOfStart("# wood:");
		if (index != -1) {
			setLine(index, "# wood: Holz des Fasses 0=alle Holzsorten 1=Birke 2=Eiche 3=Jungel 4=Fichte 5=Akazie 6=Schwarzeiche");
		}

		// Add the Example to the Cooked Section
		index = indexOfStart("# cooked:");
		if (index != -1) {
			addLines(index + 1, "# [Beispiel] MATERIAL_oder_id: Name nach Gähren");
		}

		// Add new ingredients description
		String replacedLine = "# ingredients: Auflistung von 'Material oder ID,Data/Anzahl'";
		String[] lines = new String[] {
				"#   (Item-ids anstatt Material werden von Bukkit nicht mehr unterstützt und funktionieren möglicherweise in Zukunft nicht mehr!)",
				"#   Eine Liste von allen Materialien kann hier gefunden werden: http://jd.bukkit.org/beta/apidocs/org/bukkit/Material.html",
				"#   Es kann ein Data-Wert angegeben werden, weglassen ignoriert diesen beim hinzufügen einer Zutat"
		};
		index = indexOfStart("# ingredients:");
		if (index != -1) {
			setLine(index, replacedLine);
			addLines(index + 1, lines);
		} else {
			index = indexOfStart("# name:");
			if (index != -1) {
				addLines(index + 1, lines);
				addLines(index + 1, replacedLine);
			} else {
				index = indexOfStart("# -- Rezepte für Getränke --");
				if (index != -1) {
					addLines(index + 2, lines);
					addLines(index + 2, "", replacedLine);
				}
			}
		}

		// Split the Color explanation into two lines
		replacedLine = "# color: Farbe des Getränks nach destillieren/reifen.";
		lines = new String[] {
				"#   Benutzbare Farben: DARK_RED, RED, BRIGHT_RED, ORANGE, PINK, BLUE, CYAN, WATER, GREEN, BLACK, GREY, BRIGHT_GREY"
		};

		index = indexOfStart("# color:");
		if (index != -1) {
			setLine(index, replacedLine);
			addLines(index + 1, lines);
		} else {
			index = indexOfStart("# age:");
			if (index != -1) {
				addLines(index + 1, lines);
				addLines(index + 1, replacedLine);
			}
		}

		// Add all the new info to the effects description
		replacedLine = "# effects: Auflistung Effekt/Level/Dauer  Besonderere Trank-Effekte beim Trinken, Dauer in sek.";
		lines = new String[] {
				"#   Ein 'X' an den Namen anhängen, um ihn zu verbergen. Bsp: 'POISONX/2/10' (WEAKNESS, INCREASE_DAMAGE, SLOW und SPEED sind immer verborgen.)",
				"#   Mögliche Effekte: http://jd.bukkit.org/rb/apidocs/org/bukkit/potion/PotionEffectType.html",
				"#   Minimale und Maximale Level/Dauer können durch \"-\" festgelegt werden, Bsp: 'SPEED/1-2/30-40' = Level 1 und 30 sek minimal, Level 2 und 40 sek maximal",
				"#   Diese Bereiche funktionieren auch umgekehrt, Bsp: 'POISON/3-1/20-5' für abschwächende Effekte bei guter Qualität",
				"#   Längste mögliche Effektdauer: 1638 sek. Es muss keine Dauer für Effekte mit sofortiger Wirkung angegeben werden."
		};

		index = indexOfStart("# effects:");
		if (index != -1) {
			setLine(index, replacedLine);
			addLines(index + 1, lines);
		} else {
			index = indexOfStart("# alcohol:");
			if (index != -1) {
				addLines(index + 1, lines);
				addLines(index + 1, replacedLine);
			} else {
				index = indexOfStart("# -- Rezepte für Getränke --");
				if (index != -1) {
					addLines(index + 2, lines);
					addLines(index + 2, "", replacedLine);
				}
			}
		}
		if (index != -1) {
			index = indexOfStart("#   (WEAKNESS, INCREASE_DAMAGE, SLOW und SPEED sind immer verborgen.)  Mögliche Effekte:");
			if (index != -1) {
				config.remove(index);
			}
		}
		index = indexOfStart("#   Bei Effekten mit sofortiger Wirkung ");
		if (index != -1) {
			config.remove(index);
		}

	}

	// Update en from 1.2 to 1.3
	private void update12en() {
		updateVersion("1.3");

		// Add the new Wood Types to the Description
		int index = indexOfStart("# wood:");
		if (index != -1) {
			setLine(index, "# wood: Wood of the barrel 0=any 1=Birch 2=Oak 3=Jungle 4=Spruce 5=Acacia 6=Dark Oak");
		}

		// Add the Example to the Cooked Section
		index = indexOfStart("# cooked:");
		if (index != -1) {
			addLines(index + 1, "# [Example] MATERIAL_or_id: Name after cooking");
		}

		// Add new ingredients description
		String replacedLine = "# ingredients: List of 'material or id,data/amount'";
		String[] lines = new String[] {
				"#   (Item-ids instead of material are deprecated by bukkit and may not work in the future!)",
				"#   A list of materials can be found here: http://jd.bukkit.org/beta/apidocs/org/bukkit/Material.html",
				"#   You can specify a data value, omitting it will ignore the data value of the added ingredient"
		};
		index = indexOfStart("# ingredients:");
		if (index != -1) {
			setLine(index, replacedLine);
			addLines(index + 1, lines);
		} else {
			index = indexOfStart("# name:");
			if (index != -1) {
				addLines(index + 1, lines);
				addLines(index + 1, replacedLine);
			} else {
				index = indexOfStart("# -- Recipes for Potions --");
				if (index != -1) {
					addLines(index + 2, lines);
					addLines(index + 2, "", replacedLine);
				}
			}
		}

		// Split the Color explanation into two lines
		replacedLine = "# color: Color of the potion after distilling/aging.";
		lines = new String[] {
				"#   Usable Colors: DARK_RED, RED, BRIGHT_RED, ORANGE, PINK, BLUE, CYAN, WATER, GREEN, BLACK, GREY, BRIGHT_GREY"
		};

		index = indexOfStart("# color:");
		if (index != -1) {
			setLine(index, replacedLine);
			addLines(index + 1, lines);
		} else {
			index = indexOfStart("# age:");
			if (index != -1) {
				addLines(index + 1, lines);
				addLines(index + 1, replacedLine);
			}
		}

		// Add all the new info to the effects description
		replacedLine = "# effects: List of effect/level/duration  Special potion-effect when drinking, duration in sek.";
		lines = new String[] {
				"#   Suffix name with 'X' to hide effect from label. Sample: 'POISONX/2/10' (WEAKNESS, INCREASE_DAMAGE, SLOW and SPEED are always hidden.)",
				"#   Possible Effects: http://jd.bukkit.org/rb/apidocs/org/bukkit/potion/PotionEffectType.html",
				"#   Level or Duration ranges may be specified with a \"-\", ex. 'SPEED/1-2/30-40' = lvl 1 and 30 sec at worst and lvl 2 and 40 sec at best",
				"#   Ranges also work high-low, ex. 'POISON/3-1/20-5' for weaker effects at good quality.",
				"#   Highest possible Duration: 1638 sec. Instant Effects dont need any duration specified."
		};

		index = indexOfStart("# effects:");
		if (index != -1) {
			setLine(index, replacedLine);
			addLines(index + 1, lines);
		} else {
			index = indexOfStart("# alcohol:");
			if (index != -1) {
				addLines(index + 1, lines);
				addLines(index + 1, replacedLine);
			} else {
				index = indexOfStart("# -- Recipes for Potions --");
				if (index != -1) {
					addLines(index + 2, lines);
					addLines(index + 2, "", replacedLine);
				}
			}
		}
		if (index != -1) {
			index = indexOfStart("#   (WEAKNESS, INCREASE_DAMAGE, SLOW and SPEED are always hidden.)  Possible Effects:");
			if (index != -1) {
				config.remove(index);
			}
		}
		index = indexOfStart("#   instant effects ");
		if (index != -1) {
			config.remove(index);
		}

	}

	private void update13de() {
		updateVersion("1.3.1");

		int index = indexOfStart("# Autosave");
		String[] lines = new String[] { "# Aktiviert das Suchen nach Updates für Brewery mit der curseforge api [true]",
				"# Wenn ein Update gefunden wurde, wird dies bei Serverstart im log angezeigt, sowie ops benachrichtigt",
				"updateCheck: true",
				"" };

		if (index == -1) {
			index = indexOfStart("autosave:");
			if (index == -1) {
				index = indexOfStart("# Sprachedatei");
				if (index == -1) {
					index = indexOfStart("language:");
				}
			}
		}
		if (index == -1) {
			appendLines(lines);
		} else {
			addLines(index, lines);
		}
	}
	private void update13en() {
		updateVersion("1.3.1");

		int index = indexOfStart("# Autosave");
		String[] lines = new String[] { "# Enable checking for Updates, Checks the curseforge api for updates to Brewery [true]",
				"# If an Update is found a Message is logged on Server-start and displayed to ops joining the game",
				"updateCheck: true",
				"" };

		if (index == -1) {
			index = indexOfStart("autosave:");
			if (index == -1) {
				index = indexOfStart("# Languagefile");
				if (index == -1) {
					index = indexOfStart("language:");
				}
			}
		}
		if (index == -1) {
			appendLines(lines);
		} else {
			addLines(index, lines);
		}
	}


}