From f7a63a45d86aec3e0a3a5f78af3268642119a885 Mon Sep 17 00:00:00 2001
From: mkelvers <mikkelelvers@outlook.com>
Date: Sun, 10 May 2026 18:34:25 +0200
Subject: [PATCH] feat: extract skip segment detection and auto-skip

---
 static/player/skip/index.ts    | 50 ++++++++++++++++++++++++++++++++++
 static/player/skip/segments.ts | 44 ++++++++++++++++++++++++++++++
 2 files changed, 94 insertions(+)
 create mode 100644 static/player/skip/index.ts
 create mode 100644 static/player/skip/segments.ts

diff --git a/static/player/skip/index.ts b/static/player/skip/index.ts
new file mode 100644
index 0000000..4a7a234
--- /dev/null
+++ b/static/player/skip/index.ts
@@ -0,0 +1,50 @@
+import { state } from '../state'
+import { displayTimeFromAbsolute, absoluteTimeFromDisplay } from '../timeline'
+import { showControls } from '../controls'
+import { resolveActiveSegments, renderSegments } from './segments'
+
+const skipLabel = (type: string): string => type === 'ed' ? 'Skip outro' : 'Skip intro'
+
+export const updateSkipButton = (currentTime: number): void => {
+  const btn = state.container.querySelector('[data-skip]') as HTMLButtonElement | null
+  const displayTime = displayTimeFromAbsolute(currentTime)
+
+  const segment = state.activeSegments.find(s => {
+    const delay = Math.min(1, Math.max(0.25, (s.end - s.start) * 0.02))
+    return displayTime >= s.start + delay && displayTime < s.end
+  })
+
+  if (!segment) {
+    state.activeSkipSegment = null
+    btn?.classList.add('hidden')
+    return
+  }
+
+  const autoSkip = localStorage.getItem('mal:autoskip-enabled') === 'true'
+  if (autoSkip && displayTime >= segment.start && displayTime < segment.end) {
+    state.video.currentTime = absoluteTimeFromDisplay(segment.end + 0.01)
+    return
+  }
+
+  state.activeSkipSegment = segment
+  if (btn) {
+    btn.textContent = skipLabel(segment.type)
+    btn.title = skipLabel(segment.type)
+    btn.classList.remove('hidden')
+  }
+}
+
+export const updateAutoSkipButton = (): void => {
+  const btn = document.querySelector('[data-autoskip]') as HTMLInputElement | null
+  btn && (btn.checked = localStorage.getItem('mal:autoskip-enabled') === 'true')
+}
+
+export const setupSkip = (): void => {
+  document.addEventListener('change', (e) => {
+    const target = e.target as HTMLElement
+    if (target.hasAttribute('data-autoskip')) {
+      localStorage.setItem('mal:autoskip-enabled', (target as HTMLInputElement).checked ? 'true' : 'false')
+      showControls()
+    }
+  })
+}
diff --git a/static/player/skip/segments.ts b/static/player/skip/segments.ts
new file mode 100644
index 0000000..26a9393
--- /dev/null
+++ b/static/player/skip/segments.ts
@@ -0,0 +1,44 @@
+import { SkipSegment } from '../types'
+import { state } from '../state'
+
+const MIN_SEGMENT_DURATION = 20
+const MAX_SEGMENT_DURATION = 240
+const MAX_INTRO_START = 180
+const MIN_OUTRO_START_RATIO = 0.5
+
+export const resolveActiveSegments = (): void => {
+  const bounds = state.video.duration
+  if (bounds <= 0) { state.activeSegments = []; return }
+
+  state.activeSegments = state.parsedSegments
+    .filter(s => {
+      const len = s.end - s.start
+      if (len < MIN_SEGMENT_DURATION || len > MAX_SEGMENT_DURATION) return false
+      if (s.start < 0 || s.end <= s.start || s.end > bounds + 1) return false
+
+      if (s.type === 'op') {
+        return s.start <= MAX_INTRO_START && s.start <= bounds * 0.5
+      }
+      if (s.type === 'ed') {
+        return s.start >= bounds * MIN_OUTRO_START_RATIO
+      }
+      return false
+    })
+}
+
+export const renderSegments = (): void => {
+  const track = state.container.querySelector('[data-segments]') as HTMLElement | null
+  if (!track) return
+  track.innerHTML = ''
+
+  const bounds = state.video.duration
+  if (bounds <= 0) return
+
+  state.activeSegments.forEach(s => {
+    const bar = document.createElement('div')
+    bar.className = 'absolute top-0 h-full bg-white/80'
+    bar.style.left = `${(s.start / bounds) * 100}%`
+    bar.style.width = `${((s.end - s.start) / bounds) * 100}%`
+    track.appendChild(bar)
+  })
+}