package main

import (
	"encoding/json"
	"net/http"
	"strconv"
	"strings"
)

const SharedCSS = `
  :root { color-scheme: dark; }
  body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    background: #1e1e1e; color: #ddd;
    margin: 0; padding: 0;
  }
  .topbar {
    display: flex; align-items: center; gap: 8px;
    padding: 8px 16px; background: #252526; border-bottom: 1px solid #333;
    font-size: 13px;
  }
  .topbar a { color: #9cdcfe; text-decoration: none; padding: 4px 10px; border-radius: 3px; }
  .topbar a:hover { background: #2a2d2e; }
  .topbar a.active { background: #094771; color: #fff; }
  .beta-pill { margin-left: 4px; padding: 1px 4px; border: 1px solid #555; border-radius: 3px; font-size: 10px; opacity: 0.7; text-transform: uppercase; }
  .topbar-version { margin-left: auto; font-size: 11px; opacity: 0.45; letter-spacing: 0.4px; }
  .content { padding: 16px; max-width: 980px; margin: 0 auto; }
  .beta-tools-footer { max-width: 980px; margin: 24px auto 16px auto; padding: 12px 16px 0; border-top: 1px solid #333; }
  .beta-tools-footer button { width: 100%; text-align: left; background: #3a3d41; color: #ddd; }
  .beta-tools-footer button:hover { background: #45494e; }
  .beta-note { display: block; margin-top: 3px; opacity: 0.65; font-size: 11px; }
  h2 { margin-top: 0; font-weight: 500; }
  input[type=text], input[type=date], select, textarea {
    box-sizing: border-box; padding: 6px 8px;
    background: #3c3c3c; color: #ddd;
    border: 1px solid #3c3c3c; border-radius: 2px;
    font-family: inherit; font-size: 13px;
  }
  input[type=text]:focus, input[type=date]:focus, select:focus, textarea:focus {
    outline: 1px solid #007fd4; border-color: #007fd4;
  }
  button {
    background: #0e639c; color: #fff;
    border: none; padding: 6px 14px; border-radius: 2px; cursor: pointer; font-size: 13px;
  }
  button:hover { background: #1177bb; }
  button.secondary { background: #3a3d41; color: #ddd; }
  button.secondary:hover { background: #45494e; }
  button:disabled { opacity: 0.5; cursor: not-allowed; }
  .err { color: #f48771; white-space: pre-wrap; }
  .ok { color: #89d185; }
  .hint { font-size: 12px; opacity: 0.7; }
`

type navItem struct {
	Path        string
	Label       string
	Description string
	Beta        bool
}

var navItems = []navItem{
	{Path: "/", Label: "Home"},
	{Path: "/plec", Label: "PLEC Upload", Description: "Upload HTML to the internal PLEC server"},
	{Path: "/applovin", Label: "AppLovin Upload", Description: "Upload to p.applov.in (QR preview)"},
	{Path: "/base64", Label: "Base64 Scanner", Description: "Find non-base64 assets in HTML"},
	{Path: "/mraid", Label: "MRAID Checker", Description: "Check MRAID requirements and best practices", Beta: true},
	{Path: "/mobile", Label: "Send To Mobile", Description: "Share HTML to a phone via LAN + QR"},
	{Path: "/playworks", Label: "Playworks Converter", Description: "Convert Playworks HTML to per-network variants", Beta: true},
}

func visibleNavItems(betaToolsEnabled bool) []navItem {
	out := make([]navItem, 0, len(navItems))
	for _, n := range navItems {
		if n.Beta && !betaToolsEnabled {
			continue
		}
		out = append(out, n)
	}
	return sortNavItemsForDisplay(out)
}

func sortNavItemsForDisplay(items []navItem) []navItem {
	out := append([]navItem(nil), items...)
	for i := 0; i < len(out); i++ {
		for j := i + 1; j < len(out); j++ {
			if out[i].Beta && !out[j].Beta {
				out[i], out[j] = out[j], out[i]
			}
		}
	}
	return out
}

func betaToolCount() int {
	count := 0
	for _, n := range navItems {
		if n.Beta {
			count++
		}
	}
	return count
}

func Page(activePath, title, body string) string {
	cfg := LoadConfig()
	betaToolsEnabled := cfg.BetaToolsEnabled
	var tabs strings.Builder
	for _, n := range visibleNavItems(betaToolsEnabled) {
		cls := ""
		if n.Path == activePath {
			cls = " class=\"active\""
		}
		label := n.Label
		if n.Beta {
			label += `<span class="beta-pill">Beta</span>`
		}
		tabs.WriteString(`<a href="` + n.Path + `"` + cls + `>` + label + `</a>`)
	}

	betaButtonLabel := "Enable Beta Tools"
	betaButtonNote := "Hidden beta tools: " + strconv.Itoa(betaToolCount())
	if betaToolsEnabled {
		betaButtonLabel = "Disable Beta Tools"
		betaButtonNote = "Beta tools are visible in this standalone launcher."
	}

	return `<!DOCTYPE html>
<html><head>
<meta charset="UTF-8" />
<title>` + title + ` — HPL Toolbox</title>
<style>` + SharedCSS + `</style>
</head><body>
<div class="topbar">` + tabs.String() + `<span class="topbar-version">v` + AppVersion + `</span></div>
<div class="content">` + body + `</div>
<div class="beta-tools-footer">
  <button id="betaToolsToggle" data-enabled="` + boolAttr(betaToolsEnabled) + `">` + betaButtonLabel + `<span class="beta-note">` + betaButtonNote + `</span></button>
</div>
<script>
document.getElementById('betaToolsToggle').addEventListener('click', async (event) => {
  const enabled = event.currentTarget.dataset.enabled === 'true';
  await fetch('/api/betaTools', {
    method: 'POST',
    headers: { 'Content-Type': 'application/json' },
    body: JSON.stringify({ enabled: !enabled }),
  });
  window.location.reload();
});
</script>
</body></html>`
}

func boolAttr(v bool) string {
	if v {
		return "true"
	}
	return "false"
}

func BetaToolsEndpoint(w http.ResponseWriter, r *http.Request) {
	var req struct {
		Enabled bool `json:"enabled"`
	}
	if err := json.NewDecoder(r.Body).Decode(&req); err != nil {
		writeJSON(w, map[string]any{"ok": false, "error": err.Error()})
		return
	}
	cfg := LoadConfig()
	cfg.BetaToolsEnabled = req.Enabled
	if err := SaveConfig(cfg); err != nil {
		writeJSON(w, map[string]any{"ok": false, "error": err.Error()})
		return
	}
	writeJSON(w, map[string]any{"ok": true})
}