Refactor single-transport backup into multi-provider registry (Kotlin Multiplatform)
Session from pi-coding-sessions on Hugging Face by championswimmer · MIT · condensed by Coders Talk
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13msession
0interventions
GOAL
Implement Phase 0 of a backup transports rollout plan: refactor the existing single-transport backup code across sharedLib, composeApp and cliApp into a multi-provider registry architecture.
- +0Prompt · +0Implement phase 0 of the backup-transports-rollout-plan: refactor current single-transport backup code into a multi-transport registry
- +0mAgent did · +0mRead the plan, module AGENTS.md files, and explored existing backup code (BackupTransport, BackupService, LocalFileBackupTransport, DI modules, SettingsScreen, BackupCommand) across sharedLib, composeApp and cliApp to understand current single-transport implementation.
- +2mAgent did · +2mAdded BackupProviderInfo model and BackupTransportRegistry, extended BackupTransport with capability metadata, rewrote BackupService to use the registry, updated LocalFileBackupTransport on desktop and CLI, rewired Koin DI modules (Application.kt, DesktopModules.kt, common modules.kt), reworked SettingsScreen's BackupAction into a sealed interface with per-provider export/import, rewrote BackupCommand.kt, and updated/extended BackupServiceTest and added BackupTransportRegistryTest.
- +5mAgent did · +5mRan gradle builds and tests (sharedLib:jvmTest, composeApp:compileKotlinDesktop, cliApp:compileCommonMainKotlinMetadata) and ABI checks (checkLegacyAbi/updateLegacyAbi), fixing failures iteratively until everything passed; marked Phase 0 complete in the plan file.
- +7mAgent did · +7mOn request, committed all Phase 0 changes with a detailed commit message and pushed the branch arnav/mutli-backup-transports to GitHub (16 files changed, 391 insertions, 71 deletions).
- +12mPrompt · +12mRename BackupProviderInfo to BackupProvider across the board for all changes in the most recent commit
- +12mAgent did · +12mRenamed the file and class from BackupProviderInfo to BackupProvider, updated all usages in BackupService, BackupTransportRegistry and SettingsScreen, re-ran gradle tests/compiles and ABI checks, committed the rename (6 files changed, 10 insertions, 10 deletions) and pushed the update.
- +13mOutcome · +13mPhase 0 landed in two pushed commits (f1dfd77, 6eb755f) on arnav/mutli-backup-transports: 16 files changed (+391/-71) plus a 6-file rename cleanup (+10/-10), with gradle tests, desktop/cli compiles and ABI checks passing.
VERDICT
I'd start by naming the provider metadata type up front (BackupProvider, not BackupProviderInfo) so I wouldn't need a follow-up rename pass across sharedLib, composeApp and cliApp plus a second commit and ABI re-check. The exploration-heavy start (reading every AGENTS.md and existing backup file) paid off since the actual refactor and DI rewiring went through cleanly with tests and ABI checks passing on the first real attempt.