import { useEffect, useState } from "react";
import { useStore } from "../store";
import { SectionItem, QuestItem, CombatType } from "../types";
import QuestDetailPanel from "./QuestDetailPanel";
import { TextWithCoords } from "./TextWithCoords";

function useWindowWidth() {
  const [width, setWidth] = useState(window.innerWidth);
  useEffect(() => {
    const handler = () => setWidth(window.innerWidth);
    window.addEventListener("resize", handler);
    return () => window.removeEventListener("resize", handler);
  }, []);
  return width;
}

function combatIcon(name: string): string {
  const l = name.toLowerCase();
  if (l === "solo") return "🗡️";
  if (l === "groupe") return "⚔️";
  if (l === "donjon") return "💀";
  if (
    l === "combat_vagues" ||
    l === "combat_tactique" ||
    l === "combat_aleatoire" ||
    l === "combat_zone" ||
    l === "combat"
  ) return "🗡️";
  if (l === "deplacement") return "🗺️";
  if (l === "item") return "📦";
  // Fallback — conserve l'ancienne logique pour les données CSV existantes
  if (l.includes("solo") || l.includes("seul")) return "🗡️";
  if (l.includes("group") || l.includes("groupe")) return "⚔️";
  if (l.includes("donjon") || l.includes("boss")) return "💀";
  return "🗡️";
}

export default function GuideView() {
  const { activeGuideData, completedQuests, toggleQuest, activeProfileId, resourcesPanelCollapsed, setResourcesPanelCollapsed, resourceInventory, setResourceQuantity } = useStore();
  const resourcesCollapsed = resourcesPanelCollapsed;
  const setResourcesCollapsed = setResourcesPanelCollapsed;
  const [selectedQuest, setSelectedQuest] = useState<{ name: string; url: string | null } | null>(null);
  const windowWidth = useWindowWidth();
  const resourcesIsOverlay = resourcesCollapsed || windowWidth < 500;

  if (!activeGuideData) return null;

  if (selectedQuest && activeProfileId) {
    return (
      <div style={{ flex: 1, display: "flex", overflow: "hidden", minHeight: 0 }}>
        <QuestDetailPanel
          questName={selectedQuest.name}
          questUrl={selectedQuest.url}
          profileId={activeProfileId}
          onClose={() => setSelectedQuest(null)}
        />
      </div>
    );
  }

  const { name, effect, recommended_level, resources, sections, combat_legend } = activeGuideData;

  const allQuests = collectAllQuests(sections);
  const completedCount = allQuests.filter(q => completedQuests.has(q)).length;
  const pct = allQuests.length > 0 ? Math.round((completedCount / allQuests.length) * 100) : 0;
  const isDone = pct === 100;

  return (
    <div style={{ flex: 1, display: "flex", overflow: "hidden", minHeight: 0, position: "relative" }}>
      <div className="with-scrollbar" style={{ flex: 1, overflowY: "auto", padding: "20px 24px" }}>

        {/* Header */}
        <div style={{ marginBottom: "20px" }}>
          <div style={{ display: "flex", alignItems: "flex-start", justifyContent: "space-between", gap: "8px", flexWrap: "wrap" }}>
            <div style={{ minWidth: 0 }}>
              <h1 style={{ fontSize: "18px", fontWeight: 700, color: "#f0c040", marginBottom: "2px", wordBreak: "break-word" }}>{name}</h1>
              {recommended_level && (
                <div style={{ fontSize: "12px", color: "#94a3b8" }}>
                  Niv. recommandé : <span style={{ color: "#e2e8f0", fontWeight: 600 }}>{recommended_level}</span>
                </div>
              )}
            </div>
            <div style={{ textAlign: "right", flexShrink: 0 }}>
              <div style={{ fontSize: "13px", fontWeight: 700, color: isDone ? "#4ade80" : "#f0c040" }}>
                {completedCount} / {allQuests.length}
              </div>
              <div style={{ fontSize: "11px", color: "#94a3b8" }}>{pct}%</div>
            </div>
          </div>

          <div style={{ height: "4px", background: "#2d3748", borderRadius: "2px", overflow: "hidden", marginTop: "10px" }}>
            <div style={{
              height: "100%", width: `${pct}%`,
              background: isDone ? "#4ade80" : "linear-gradient(90deg, #4a9eff, #f0c040)",
              borderRadius: "2px", transition: "width 0.3s ease",
            }} />
          </div>

          {effect && (
            <div style={{
              marginTop: "12px", padding: "10px 14px",
              background: "rgba(240,192,64,0.04)", borderRadius: "6px",
              borderLeft: "3px solid rgba(240,192,64,0.4)",
              fontSize: "12px", color: "#94a3b8", lineHeight: 1.6,
            }}>
              <span style={{ color: "#f0c040", fontWeight: 600, fontSize: "11px", display: "block", marginBottom: "3px", textTransform: "uppercase", letterSpacing: "0.05em" }}>
                ✨ Effet
              </span>
              {effect}
            </div>
          )}
        </div>

        {/* Légende */}
        {combat_legend.length > 0 && (
          <Legend legend={combat_legend} />
        )}

        {/* Sections */}
        {sections.map((section, si) => (
          <div key={si} style={{ marginBottom: "24px" }}>
            <h2 style={{
              fontSize: "11px", fontWeight: 600, color: "#4a5568",
              textTransform: "uppercase", letterSpacing: "0.1em",
              marginBottom: "8px", borderBottom: "1px solid #2d3748", paddingBottom: "4px",
            }}>
              {section.name}
            </h2>
            {section.items.map((item, ii) => (
              <SectionItemView key={ii} item={item} completedQuests={completedQuests} onToggle={toggleQuest} onSelect={setSelectedQuest} />
            ))}
          </div>
        ))}
      </div>

      {/* Resources panel */}
      {resources.length > 0 && (
        <div style={{
          position: resourcesIsOverlay ? "absolute" : "relative",
          right: 0,
          top: 0,
          bottom: 0,
          zIndex: 10,
          width: resourcesCollapsed ? "36px" : "190px",
          flexShrink: 0,
          background: resourcesCollapsed ? "transparent" : "#161b22",
          borderLeft: resourcesCollapsed ? "none" : "1px solid #2d3748",
          display: "flex",
          flexDirection: "column",
          overflow: "hidden",
          transition: "width 0.2s ease, background 0.2s ease",
        }}>
          {/* Toggle */}
          <button
            onClick={() => setResourcesCollapsed(!resourcesCollapsed)}
            title={resourcesCollapsed ? "Afficher les ressources" : "Masquer les ressources"}
            style={{
              width: "100%",
              height: "36px",
              flexShrink: 0,
              background: resourcesCollapsed ? "rgba(22,27,34,0.9)" : "transparent",
              border: resourcesCollapsed ? "1px solid #2d3748" : "none",
              borderRight: "none",
              borderRadius: resourcesCollapsed ? "6px 0 0 6px" : "0",
              borderBottom: "1px solid #2d3748",
              color: "#4a5568",
              cursor: "pointer",
              display: "flex",
              alignItems: "center",
              justifyContent: resourcesCollapsed ? "center" : "flex-start",
              padding: "0 10px",
              gap: "6px",
              marginTop: resourcesCollapsed ? "8px" : "0",
              transition: "all 0.15s",
            }}
            onMouseEnter={e => (e.currentTarget.style.color = "#f0c040")}
            onMouseLeave={e => (e.currentTarget.style.color = "#4a5568")}
          >
            <span style={{
              fontSize: "12px",
              transform: resourcesCollapsed ? "rotate(180deg)" : "rotate(0deg)",
              transition: "transform 0.2s ease",
              display: "inline-block",
            }}>
              ›
            </span>
            {!resourcesCollapsed && (
              <span style={{ fontSize: "11px", fontWeight: 600, textTransform: "uppercase", letterSpacing: "0.1em", whiteSpace: "nowrap" }}>
                Ressources
              </span>
            )}
          </button>

          {/* List */}
          {!resourcesCollapsed && (
            <div className="with-scrollbar" style={{ flex: 1, overflowY: "auto", padding: "10px 14px" }}>
              {resources.map((r, i) => {
                const owned = resourceInventory[r.name] ?? 0;
                const done = owned >= r.quantity;
                return (
                  <div key={i} style={{
                    padding: "6px 0", borderBottom: "1px solid #1f2937", fontSize: "12px",
                  }}>
                    <span style={{
                      color: done ? "#4ade80" : "#94a3b8",
                      display: "-webkit-box",
                      WebkitLineClamp: 2,
                      WebkitBoxOrient: "vertical",
                      overflow: "hidden",
                      wordBreak: "break-word",
                      marginBottom: "3px",
                    } as React.CSSProperties}>
                      {r.name}
                    </span>
                    <div style={{ display: "flex", alignItems: "center", gap: "4px" }}>
                      <input
                        type="number"
                        min="0"
                        value={owned === 0 ? "" : owned}
                        placeholder="0"
                        onChange={e => {
                          const v = parseInt(e.target.value);
                          setResourceQuantity(r.name, isNaN(v) ? 0 : Math.max(0, v));
                        }}
                        style={{
                          width: "42px", background: "#0d1117",
                          border: `1px solid ${done ? "rgba(74,222,128,0.4)" : "#2d3748"}`,
                          borderRadius: "4px", padding: "2px 4px",
                          color: done ? "#4ade80" : "#e2e8f0",
                          fontSize: "11px", outline: "none", textAlign: "right",
                        }}
                      />
                      <span style={{ color: done ? "#4ade80" : "#f0c040", fontWeight: 700, flexShrink: 0 }}>
                        / ×{r.quantity}
                      </span>
                    </div>
                  </div>
                );
              })}
            </div>
          )}
        </div>
      )}
    </div>
  );
}

function Legend({ legend }: { legend: CombatType[] }) {
  return (
    <div style={{
      marginBottom: "20px", padding: "12px 16px",
      background: "rgba(255,255,255,0.02)", border: "1px solid #2d3748", borderRadius: "8px",
    }}>
      <div style={{
        fontSize: "11px", fontWeight: 600, color: "#4a5568",
        textTransform: "uppercase", letterSpacing: "0.1em", marginBottom: "10px",
      }}>
        Légende
      </div>
      <div style={{ display: "flex", flexWrap: "wrap", gap: "16px" }}>
        {legend.map((ct, i) => (
          <div key={i} style={{ display: "flex", alignItems: "center", gap: "6px" }}>
            <span style={{ fontSize: "15px" }}>{combatIcon(ct.name)}</span>
            <span style={{ fontSize: "12px", color: "#94a3b8" }}>{ct.name}</span>
          </div>
        ))}
      </div>
    </div>
  );
}

function SectionItemView({ item, completedQuests, onToggle, onSelect }: {
  item: SectionItem;
  completedQuests: Set<string>;
  onToggle: (name: string) => void;
  onSelect: (quest: { name: string; url: string | null }) => void;
}) {
  if (item.type === "Instruction") {
    if (item.text.startsWith("__ZONE__:")) {
      const zone = item.text.replace("__ZONE__:", "");
      return (
        <div style={{
          display: "flex", alignItems: "center", gap: "8px",
          padding: "8px 0 4px", marginBottom: "2px",
        }}>
          <div style={{ flex: 1, height: "1px", background: "#2d3748" }} />
          <span style={{ fontSize: "11px", color: "#4a9eff", fontWeight: 600, flexShrink: 0 }}>{zone}</span>
          <div style={{ flex: 1, height: "1px", background: "#2d3748" }} />
        </div>
      );
    }
    return (
      <div style={{
        marginBottom: "6px", padding: "9px 14px",
        background: "rgba(74,158,255,0.04)",
        borderLeft: "3px solid rgba(74,158,255,0.35)",
        borderRadius: "4px",
        fontSize: "12px", color: "#94a3b8", lineHeight: 1.6,
      }}>
        <span style={{ color: "#4a9eff", fontSize: "10px", fontWeight: 600, display: "block", marginBottom: "2px", textTransform: "uppercase", letterSpacing: "0.05em" }}>
          Rappel
        </span>
        <TextWithCoords text={item.text} />
      </div>
    );
  }

  if (item.type === "Group") {
    return (
      <div style={{
        background: "rgba(255,255,255,0.02)", border: "1px solid #2d3748",
        borderRadius: "6px", padding: "8px 10px", marginBottom: "6px",
      }}>
        {item.note && (
          <div style={{ fontSize: "11px", color: "#4a9eff", marginBottom: "6px", fontStyle: "italic" }}>
            🔗 {item.note}
          </div>
        )}
        {item.quests.map((q, i) => (
          <QuestRow key={i} quest={q} indent completed={completedQuests.has(q.name)} onToggle={onToggle} onSelect={onSelect} />
        ))}
      </div>
    );
  }

  if (item.type === "Quest") {
    return <QuestRow quest={item} completed={completedQuests.has(item.name)} onToggle={onToggle} onSelect={onSelect} />;
  }

  return null;
}

function QuestRow({ quest, completed, onToggle, onSelect, indent }: {
  quest: QuestItem;
  completed: boolean;
  onToggle: (name: string) => void;
  onSelect: (quest: { name: string; url: string | null }) => void;
  indent?: boolean;
}) {
  const questPreviews = useStore(s => s.questPreviews);
  const previewsLoading = useStore(s => s.previewsLoading);
  const [previewsOpen, setPreviewsOpen] = useState(false);

  const previews = quest.url ? questPreviews[quest.url] : undefined;
  const showLoadingPlaceholder = previewsLoading && quest.url !== null && previews === undefined;

  const hasPreviewSection = showLoadingPlaceholder || (previews && previews.length > 0);

  return (
    <div
      style={{
        display: "flex", alignItems: "flex-start", gap: "8px",
        padding: indent ? "3px 0" : "4px 6px",
        borderRadius: "5px",
        marginBottom: indent ? "1px" : "2px",
        opacity: completed ? 0.5 : 1,
        transition: "all 0.12s",
      }}
      onMouseEnter={e => { (e.currentTarget as HTMLElement).style.background = "rgba(255,255,255,0.04)"; }}
      onMouseLeave={e => { (e.currentTarget as HTMLElement).style.background = "transparent"; }}
    >
      <input
        type="checkbox"
        checked={completed}
        onChange={() => onToggle(quest.name)}
        style={{ marginTop: "2px", flexShrink: 0, cursor: "pointer" }}
      />
      <div style={{ flex: 1, minWidth: 0 }}>
        <div style={{ display: "flex", alignItems: "baseline", flexWrap: "wrap", gap: "2px 8px" }}>
          <span
            onClick={() => onSelect({ name: quest.name, url: quest.url })}
            style={{
              fontSize: "12px", lineHeight: 1.4,
              color: completed ? "#4a5568" : "#93c5fd",
              textDecoration: completed ? "line-through" : "underline",
              textDecorationColor: "rgba(147,197,253,0.3)",
              cursor: "pointer",
              wordBreak: "break-word",
            }}
          >
            {quest.name}
          </span>
          {quest.combat_indicators.map((ci, i) => (
            <span key={i} style={{ fontSize: "11px", color: "#94a3b8", whiteSpace: "nowrap", flexShrink: 0 }}>
              {combatIcon(ci.combat_type)} x{ci.count}
            </span>
          ))}
        </div>

        {hasPreviewSection && (
          <span
            onClick={() => setPreviewsOpen(o => !o)}
            style={{
              display: "inline-block",
              marginTop: "2px",
              fontSize: "10px",
              color: "#4a5568",
              cursor: "pointer",
              userSelect: "none",
            }}
            onMouseEnter={e => { (e.currentTarget as HTMLElement).style.color = "#94a3b8"; }}
            onMouseLeave={e => { (e.currentTarget as HTMLElement).style.color = "#4a5568"; }}
          >
            {previewsOpen
              ? `▾ À prévoir`
              : `▸ À prévoir${previews && previews.length > 0 ? ` (${previews.length})` : ""}`
            }
          </span>
        )}

        {previewsOpen && (
          <>
            {showLoadingPlaceholder && (
              <div style={{
                marginTop: "3px",
                width: "60px", height: "14px",
                borderRadius: "4px",
                background: "linear-gradient(90deg, #1f2937 25%, #2d3748 50%, #1f2937 75%)",
                backgroundSize: "200% 100%",
                animation: "shimmer 1.4s infinite",
              }} />
            )}

            {!showLoadingPlaceholder && previews && previews.length > 0 && (
              <div style={{ display: "flex", flexWrap: "wrap", gap: "4px", marginTop: "3px" }}>
                {previews.map((ci, i) => (
                  <span key={i} style={{
                    display: "inline-flex", alignItems: "center", gap: "3px",
                    fontSize: "10px", padding: "1px 6px", borderRadius: "4px",
                    background: "rgba(255,255,255,0.05)", border: "1px solid #2d3748",
                    color: "#4a5568",
                  }}>
                    <span>{combatIcon(ci.combat_type)}</span>
                    <span>×{ci.count}{ci.combat_type !== "item" ? ` ${ci.combat_type}` : ""}</span>
                    {ci.evitable && (
                      <span style={{ color: "#4ade80" }}>(évit.)</span>
                    )}
                    {ci.label && (
                      <span style={{
                        fontStyle: "italic",
                        maxWidth: "80px", overflow: "hidden",
                        textOverflow: "ellipsis", whiteSpace: "nowrap",
                        display: "inline-block",
                      }}>
                        {ci.label}
                      </span>
                    )}
                  </span>
                ))}
              </div>
            )}
          </>
        )}

        {quest.note && (
          <div style={{ fontSize: "11px", color: "#4a5568", marginTop: "2px", fontStyle: "italic" }}>
            → <TextWithCoords text={quest.note} />
          </div>
        )}
      </div>
    </div>
  );
}

function collectAllQuests(sections: import("../types").Section[]): string[] {
  const names: string[] = [];
  for (const section of sections) {
    for (const item of section.items) {
      if (item.type === "Quest") names.push(item.name);
      else if (item.type === "Group") item.quests.forEach((q: QuestItem) => names.push(q.name));
    }
  }
  return names;
}