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refactor(extension): extract episode-utils from background.js + content.js

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Move extractEpisodeId() and sameEpisode() to shared episode-utils.js.
background.js imports via ES module. content.js (IIFE) receives injected
copy via build-extension.js marker replacement, eliminating duplication.
This commit is contained in:
Timo
2026-06-16 12:48:11 +02:00
parent d38a840114
commit d7bb8dc97c
4 changed files with 53 additions and 28 deletions
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extension/content.js
+8 -9
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@@ -290,28 +290,27 @@
// Extract a canonical episode identifier from a title string.
// Handles: S01E01, S1E1, S01 - E01, Season 1 Episode 1, "Folge 5", "Episode 5", "Ep. 5", "#5"
// Returns null if no episode pattern found.
// --- SHARED_EPISODE_UTILS_INJECT_START ---
// This block is automatically replaced by /scripts/build-extension.js
function extractEpisodeId(title) {
if (!title || typeof title !== 'string') return null;
// S01E01 patterns (with any non-alphanumeric separator between season and E)
const se = title.match(/S(?:eason\s*)?(\d+)[^a-zA-Z0-9]*E(?:pisode\s*)?(\d+)/i);
if (se) return `S${String(se[1]).padStart(2, '0')}E${String(se[2]).padStart(2, '0')}`;
// "Episode X", "Folge X", "Ep. X", "#X"
const ep = title.match(/(?:Episode|Folge|Ep\.?|#)\s*(\d+)/i);
if (ep) return `EP${String(ep[1]).padStart(3, '0')}`;
return null;
}
// Returns true if two titles likely refer to the same episode.
// Strict: both must have IDs and match, OR neither has IDs and exact match.
function sameEpisode(titleA, titleB) {
if (!titleA && !titleB) return true; // Both unknown → assume same (backward compat)
if (!titleA || !titleB) return false; // One unknown, one known → different
if (!titleA && !titleB) return true;
if (!titleA || !titleB) return false;
const idA = extractEpisodeId(titleA);
const idB = extractEpisodeId(titleB);
if (idA && idB) return idA === idB; // Both have parseable IDs → compare IDs
if (idA || idB) return false; // One has ID, other doesn't → different
return titleA === titleB; // Neither has ID → exact string match
if (idA && idB) return idA === idB;
if (idA || idB) return false;
return titleA === titleB;
}
// --- SHARED_EPISODE_UTILS_INJECT_END ---
// Returns true only when we are CERTAIN the episodes differ.
// Permissive: only blocks if BOTH titles have parseable IDs AND they differ.