Coach
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Foundation Foundation 1.0

Foundation — schema, persistence, watch, Strava, library

The functional base of Coach lands in one intense day: JSON schema and decoder, iCloud import, runner + session logging, watchOS + HealthKit, Strava upload, and the exercise library.

What shipped

Six phases of functional groundwork, before any visual redesign.

  • Schema + decoder. Typed workout model with per-field back-compat (decodeIfPresent everywhere). Full test coverage for every optional field.
  • iCloud Drive import. NSMetadataQuery watches Coach/Documents/workouts/ and pulls new files in without an explicit sync trigger. SwiftData persists everything locally.
  • Runner + session logging. Sets, reps, timer, per-set pain slider (later removed in favor of the session-end pain gate).
  • Watch + HealthKit. HKWorkoutSession owned by the phone (never the system Workout app — HealthKit would double-count). HR samples stream over WatchConnectivity.
  • Strava OAuth. PKCE flow, tokens in Keychain, one-way upload after each completed session.
  • Exercise library. AVPlayer for local videos, tag filter, search, cross-references, and a YouTube-search fallback for exercises without an explicit videoUrl (opens in an in-app Safari view).

No third-party dependencies at any point.