import SwiftUI

/// 도메인 raw 값(영문/한자 enum 키) → 한글 표시 라벨. 색은 Sage.domainColor(raw) 가 raw 로 키잉하므로
/// 색에는 raw, 표시에만 이 라벨을 쓴다. 미매핑은 원본 그대로.
func localizedDomain(_ raw: String?) -> String {
    guard let raw, !raw.isEmpty else { return "미분류" }
    // 경로형(Philosophy/Aesthetics)이면 leaf 만 매핑 시도, 없으면 leaf 원본
    let leaf = raw.split(separator: "/").last.map(String.init) ?? raw
    let map: [String: String] = [
        "Engineering": "엔지니어링", "Industrial_Safety": "산업안전", "General": "자료실",
        "Programming": "프로그래밍", "법령": "법령", "Philosophy": "철학",
    ]
    return map[raw] ?? map[leaf] ?? leaf
}

/// 카드/섹션 머리말 라벨 (대문자·heavy·muted) — 대시보드/인스펙터 공용.
struct SectionLabel: View {
    let text: String
    init(_ text: String) { self.text = text }
    var body: some View {
        Text(text)
            .font(.caption.weight(.heavy))
            .textCase(.uppercase)
            .kerning(0.7)
            .foregroundStyle(Sage.muted)
    }
}

/// 공용 카드 크롬 (Sage.card + corner 12 + Sage.line stroke + 패딩).
struct DashCard: ViewModifier {
    var padding: CGFloat = 18
    func body(content: Content) -> some View {
        content
            .padding(padding)
            .background(Sage.card, in: RoundedRectangle(cornerRadius: 12))
            .overlay(RoundedRectangle(cornerRadius: 12).stroke(Sage.line))
    }
}
extension View { func dashCard(padding: CGFloat = 18) -> some View { modifier(DashCard(padding: padding)) } }

/// 보더리스 인라인 통계 셀 (대시보드 스탯 스트립). StatCard 와 달리 카드 테두리 없음.
struct StatCell: View {
    let value: Int
    let label: String
    var color: Color = Sage.ink
    var body: some View {
        VStack(alignment: .leading, spacing: 3) {
            Text("\(value)").font(.system(size: 20, weight: .semibold)).kerning(-0.6)
                .monospacedDigit().foregroundStyle(color)
            Text(label).font(.caption2).foregroundStyle(Sage.muted)
        }
        .frame(maxWidth: .infinity, alignment: .leading)
    }
}

struct StatCard: View {
    let title: String
    let value: Int
    let color: Color
    var body: some View {
        VStack(alignment: .leading, spacing: 4) {
            Text(title).font(.caption).foregroundStyle(Sage.muted)
            Text("\(value)").font(.title.weight(.bold)).foregroundStyle(color)
        }
        .frame(maxWidth: .infinity, alignment: .leading)
        .padding(14)
        .background(Sage.card, in: RoundedRectangle(cornerRadius: 12))
        .overlay(RoundedRectangle(cornerRadius: 12).stroke(Sage.line))
    }
}

struct DomainBar: View {
    let name: String
    let count: Int
    let max: Int
    var body: some View {
        HStack(spacing: 10) {
            Text(name).font(.caption).foregroundStyle(Sage.ink)
                .frame(width: 120, alignment: .leading).lineLimit(1)
            GeometryReader { geo in
                ZStack(alignment: .leading) {
                    RoundedRectangle(cornerRadius: 4).fill(Sage.surface)
                    RoundedRectangle(cornerRadius: 4)
                        .fill(Sage.domainColor(name))
                        .frame(width: geo.size.width * fraction)
                }
            }
            .frame(height: 10)
            Text("\(count)").font(.caption.monospacedDigit()).foregroundStyle(Sage.muted)
                .frame(width: 44, alignment: .trailing)
        }
    }
    private var fraction: CGFloat { max > 0 ? CGFloat(count) / CGFloat(max) : 0 }
}

struct ScoreBar: View {
    let score: Double
    var body: some View {
        HStack(spacing: 6) {
            GeometryReader { geo in
                ZStack(alignment: .leading) {
                    RoundedRectangle(cornerRadius: 3).fill(Sage.surface)
                    RoundedRectangle(cornerRadius: 3).fill(Sage.brand)
                        .frame(width: geo.size.width * CGFloat(min(max(score, 0), 1)))
                }
            }
            .frame(height: 6)
            Text(String(format: "%.2f", score)).font(.caption2.monospacedDigit()).foregroundStyle(Sage.muted)
        }
    }
}

struct ErrorBanner: View {
    let text: String
    var body: some View {
        Text(text)
            .font(.callout)
            .foregroundStyle(Sage.danger)
            .frame(maxWidth: .infinity, alignment: .leading)
            .padding(12)
            .background(Sage.danger.opacity(0.08), in: RoundedRectangle(cornerRadius: 10))
            .overlay(RoundedRectangle(cornerRadius: 10).stroke(Sage.danger.opacity(0.3)))
    }
}