library(bslib)
library(glue)

HAWKS_ORANGE <- "#F25B00"
HAWKS_BLUE   <- "#164EA7"
HAWKS_DARK   <- "#0D1B2A"
HAWKS_LIGHT  <- "#F5F7FA"
HAWKS_GRAY   <- "#6B7280"
HAWKS_BORDER <- "#E2E8F0"

hawks_theme <- bs_theme(
  version      = 5,
  bg           = "#FFFFFF",
  fg           = HAWKS_DARK,
  primary      = HAWKS_BLUE,
  secondary    = HAWKS_ORANGE,
  success      = "#16a34a",
  warning      = "#d97706",
  danger       = "#dc2626",
  base_font    = font_google("Inter"),
  heading_font = font_google("Inter"),
  `border-radius`  = "0.5rem",
  `font-size-base` = "0.925rem"
)

# ── Shared CSS ────────────────────────────────────────────────────────────────
hawks_css <- tags$style(HTML(glue("
  * {{ box-sizing: border-box; }}

  body {{
    background: {HAWKS_LIGHT};
    font-family: 'Inter', system-ui, sans-serif;
  }}

  /* ── Sidebar shell ── */
  .hawks-shell {{
    display: flex;
    height: 100vh;
    overflow: hidden;
  }}

  .hawks-sidebar {{
    width: 220px;
    min-width: 220px;
    background: {HAWKS_DARK};
    display: flex;
    flex-direction: column;
    transition: width 0.2s ease, min-width 0.2s ease;
    overflow: hidden;
  }}
  .hawks-sidebar.collapsed {{
    width: 52px;
    min-width: 52px;
  }}

  .sb-brand {{
    padding: 16px 14px;
    border-bottom: 1px solid #ffffff18;
    display: flex;
    align-items: center;
    gap: 10px;
    min-height: 56px;
  }}
  .sb-brand-text {{ overflow: hidden; white-space: nowrap; }}
  .sb-brand-text .t1 {{ color: #fff; font-size: 13px; font-weight: 700; display: block; }}
  .sb-brand-text .t2 {{ color: #ffffff55; font-size: 10px; display: block; letter-spacing: .03em; }}
  .hawks-sidebar.collapsed .sb-brand-text {{ display: none; }}

  .sb-section {{
    padding: 12px 14px 4px;
    color: #ffffff33;
    font-size: 9px;
    font-weight: 700;
    letter-spacing: .1em;
    text-transform: uppercase;
    white-space: nowrap;
  }}
  .hawks-sidebar.collapsed .sb-section {{ visibility: hidden; }}

  .sb-item {{
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 9px 14px;
    margin: 1px 6px;
    border-radius: 6px;
    cursor: pointer;
    color: #ffffffaa;
    font-size: 13px;
    font-weight: 500;
    white-space: nowrap;
    text-decoration: none;
    transition: background 0.15s, color 0.15s;
  }}
  .sb-item:hover {{ background: #ffffff12; color: #fff; }}
  .sb-item.active {{ background: {HAWKS_BLUE}; color: #fff; }}
  .sb-icon {{ font-size: 16px; width: 18px; text-align: center; flex-shrink: 0; }}
  .sb-label {{ overflow: hidden; }}
  .hawks-sidebar.collapsed .sb-label {{ display: none; }}

  .sb-footer {{
    margin-top: auto;
    padding: 12px 6px;
    border-top: 1px solid #ffffff18;
    display: flex;
    justify-content: center;
  }}
  .sb-toggle {{
    width: 32px; height: 32px;
    border-radius: 6px;
    display: flex; align-items: center; justify-content: center;
    cursor: pointer;
    color: #ffffff66;
    transition: background 0.15s, color 0.15s;
  }}
  .sb-toggle:hover {{ background: #ffffff15; color: #fff; }}

  /* ── Main area ── */
  .hawks-main {{
    flex: 1;
    display: flex;
    flex-direction: column;
    overflow: hidden;
    min-width: 0;
  }}

  .hawks-topbar {{
    background: #fff;
    border-bottom: 1px solid {HAWKS_BORDER};
    padding: 0 20px;
    height: 54px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-shrink: 0;
  }}
  .topbar-title {{ font-size: 15px; font-weight: 700; color: {HAWKS_DARK}; }}
  .topbar-sub   {{ font-size: 11px; color: #9CA3AF; margin-left: 8px; }}

  /* ── Content scroll area ── */
  .hawks-content {{
    flex: 1;
    overflow-y: auto;
    padding: 24px;
  }}

  /* ── Filter panel ── */
  .hawks-body {{ display: flex; flex: 1; overflow: hidden; }}
  .filter-panel {{
    width: 210px;
    min-width: 210px;
    background: #fff;
    border-right: 1px solid {HAWKS_BORDER};
    padding: 16px 13px;
    overflow-y: auto;
    flex-shrink: 0;
  }}
  .fp-section {{
    font-size: 10px; font-weight: 700; text-transform: uppercase;
    letter-spacing: .08em; color: #9CA3AF; margin-bottom: 10px;
  }}
  .fp-group {{ margin-bottom: 16px; }}
  .fp-label {{
    font-size: 11px; font-weight: 600; color: #374151;
    margin-bottom: 5px; display: block;
  }}
  .fp-input {{
    width: 100%; background: {HAWKS_LIGHT};
    border: 1px solid {HAWKS_BORDER}; border-radius: 5px;
    padding: 5px 8px; font-size: 11px; color: #374151;
  }}
  .fp-pills {{ display: flex; flex-wrap: wrap; gap: 4px; margin-top: 4px; }}
  .fp-pill {{
    background: {HAWKS_LIGHT}; border: 1px solid {HAWKS_BORDER};
    border-radius: 4px; padding: 3px 8px;
    font-size: 10px; color: #374151; cursor: pointer;
  }}
  .fp-pill.active {{
    background: #164EA714; border-color: #164EA755;
    color: {HAWKS_BLUE}; font-weight: 600;
  }}
  .fp-apply {{
    width: 100%; background: {HAWKS_BLUE}; color: #fff;
    border: none; border-radius: 6px; padding: 7px;
    font-size: 11px; font-weight: 600; cursor: pointer; margin-top: 4px;
  }}
  .fp-reset {{
    text-align: center; font-size: 10px; color: #9CA3AF;
    margin-top: 6px; cursor: pointer;
  }}

  /* ── Tab strip ── */
  .hawks-tabs {{
    background: #fff;
    border-bottom: 1px solid {HAWKS_BORDER};
    padding: 0 20px;
    display: flex;
    flex-shrink: 0;
  }}
  .h-tab {{
    padding: 11px 14px;
    font-size: 12px; font-weight: 500;
    color: #6B7280;
    border-bottom: 2px solid transparent;
    cursor: pointer;
    white-space: nowrap;
    transition: color .15s, border-color .15s;
  }}
  .h-tab:hover {{ color: #374151; }}
  .h-tab.active {{ color: {HAWKS_BLUE}; border-bottom-color: {HAWKS_BLUE}; font-weight: 600; }}

  /* ── Stat cards ── */
  .stat-grid {{
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 12px;
    margin-bottom: 18px;
  }}
  .stat-box {{
    background: #fff; border: 1px solid {HAWKS_BORDER};
    border-radius: 8px; padding: 14px 16px;
  }}
  .stat-val {{ font-size: 22px; font-weight: 700; color: {HAWKS_DARK}; line-height: 1; }}
  .stat-lbl {{
    font-size: 10px; color: {HAWKS_GRAY};
    text-transform: uppercase; letter-spacing: .07em; margin-top: 4px;
  }}
  .stat-delta {{ font-size: 10px; margin-top: 3px; }}
  .stat-delta.up {{ color: #16a34a; }}
  .stat-delta.dn {{ color: #dc2626; }}
  .stat-bar {{ height: 3px; background: {HAWKS_BORDER}; border-radius: 2px; margin-top: 10px; }}
  .stat-bar-fill {{ height: 3px; border-radius: 2px; background: {HAWKS_BLUE}; }}

  /* ── Cards ── */
  .data-card {{
    background: #fff; border: 1px solid {HAWKS_BORDER};
    border-radius: 8px; overflow: hidden;
  }}
  .data-card-hdr {{
    padding: 10px 14px; border-bottom: 1px solid {HAWKS_BORDER};
    display: flex; align-items: center; justify-content: space-between;
  }}
  .data-card-title {{
    font-size: 11px; font-weight: 700; color: {HAWKS_DARK};
    text-transform: uppercase; letter-spacing: .05em;
  }}
  .data-card-sub {{ font-size: 10px; color: #9CA3AF; }}
  .data-card-body {{ padding: 12px 14px; }}

  /* ── Player selector ── */
  .player-select {{
    background: {HAWKS_LIGHT}; border: 1px solid {HAWKS_BORDER};
    border-radius: 6px; padding: 6px 10px;
    display: flex; align-items: center; gap: 6px; cursor: pointer;
  }}
  .player-select .ps-name {{ font-size: 12px; font-weight: 600; color: #374151; }}

  /* ── Placeholder ── */
  .placeholder-panel {{
    background: {HAWKS_LIGHT};
    border: 1.5px dashed {HAWKS_BORDER};
    border-radius: 8px;
    padding: 3rem 1rem;
    text-align: center; color: {HAWKS_GRAY};
  }}
  .placeholder-panel .ph-label {{ font-weight: 500; font-size: 0.9rem; }}
  .placeholder-panel .ph-sub   {{ font-size: 0.8rem; margin-top: 0.25rem; opacity: .7; }}
")))

# ── Sidebar builder ───────────────────────────────────────────────────────────
hawks_sidebar <- function(items, app_title = "Analytics") {
  nav_items <- lapply(items, function(item) {
    tags$div(
      class = paste("sb-item", if (isTRUE(item$active)) "active" else ""),
      id    = paste0("sb_", item$id),
      onclick = if (!is.null(item$tab)) {
        sprintf("Shiny.setInputValue('active_tab','%s',{priority:'event'})", item$tab)
      },
      tags$i(class = paste("ti", item$icon, "sb-icon")),
      tags$span(class = "sb-label", item$label)
    )
  })

  tags$div(
    class = "hawks-sidebar",
    id    = "hawksSidebar",

    tags$div(
      class = "sb-brand",
      tags$svg(
        width = "28", height = "28", viewBox = "0 0 30 30", fill = "none",
        tags$polygon(points = "15,2 28,26 15,21 2,26", fill = HAWKS_ORANGE, opacity = "0.9"),
        tags$polygon(points = "15,2 15,21 2,26",        fill = "#FFFFFF",    opacity = "0.18")
      ),
      tags$div(
        class = "sb-brand-text",
        tags$span(class = "t1", "Harbor Hawks"),
        tags$span(class = "t2", app_title)
      )
    ),

    tags$div(class = "sb-section", "Navigation"),
    tagList(nav_items),

    tags$div(
      class = "sb-footer",
      tags$div(
        class   = "sb-toggle",
        id      = "sbToggle",
        onclick = "toggleSidebar()",
        tags$i(class = "ti ti-chevrons-left", id = "sbToggleIcon")
      )
    )
  )
}

# ── Topbar ────────────────────────────────────────────────────────────────────
hawks_topbar <- function(title, subtitle = "Cape Cod League \u00b7 2025", right = NULL) {
  tags$div(
    class = "hawks-topbar",
    tags$div(
      style = "display:flex; align-items:baseline; gap:6px;",
      tags$span(class = "topbar-title", title),
      tags$span(class = "topbar-sub",   subtitle)
    ),
    if (!is.null(right)) right
  )
}

# ── Sidebar JS ────────────────────────────────────────────────────────────────
hawks_sidebar_js <- tags$script(HTML("
  function toggleSidebar() {
    var sb   = document.getElementById('hawksSidebar');
    var icon = document.getElementById('sbToggleIcon');
    sb.classList.toggle('collapsed');
    var isCollapsed = sb.classList.contains('collapsed');
    icon.className = isCollapsed ? 'ti ti-chevrons-right' : 'ti ti-chevrons-left';
  }
"))

# ── Helpers ───────────────────────────────────────────────────────────────────
placeholder_panel <- function(label, sub = "Coming soon") {
  tags$div(
    class = "placeholder-panel",
    tags$div(class = "ph-label", label),
    tags$div(class = "ph-sub",  sub)
  )
}