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//! zit — a Fossil version-control system implemented in Zig.
//!
//! zit is a direct port of the Fossil formats and protocol as specified by
//! four companion Internet-Drafts, kept in `docs/rfcs/`:
//!
//!   * delta   — draft-fossil-delta-format-00     (byte-level delta encoding)
//!   * artifact— draft-fossil-artifact-format-00  (manifest/control-artifact cards)
//!   * reposta.— draft-fossil-repo-state-00        (derived branch/tag/leaf/trunk views)
//!   * sync    — draft-fossil-sync-protocol-00     (HTTP sync/clone protocol)
//!
//! Implementation order follows the RFC dependency layering:
//!   delta  ->  artifact  ->  repostate  ->  sync
//!
//! Each module cites the section of its RFC that governs a given rule.

const std = @import("std");

/// The §4.1 zlib container codec — a leaf below delta/artifact/repostate/sync,
/// the single home for the container framing those layers store and transmit.
pub const container = @import("container.zig");
pub const delta = @import("delta.zig");
pub const artifact = @import("artifact.zig");
pub const repostate = @import("repostate.zig");
pub const sync = @import("sync.zig");
pub const control_paths = @import("control_paths.zig");
pub const managed = @import("managed.zig");

/// The persistence layers, folded into the one embeddable `zit` module so a
/// library consumer wires a single dependency instead of five peers: the
/// content-addressed on-disk file (`storage`), the framed append-only log over
/// it (`logstore`), the `.zit-checkout` working-state record (`checkout`), and
/// the working-tree materializer (`update`). Circular file-level imports among
/// these and the per-RFC modules are legal within one module; only cross-module
/// edges may not cycle.
pub const storage = @import("storage.zig");
pub const logstore = @import("logstore.zig");
/// Importer modules cross the executable/library module boundary. Zig module
/// privacy requires exporting them here so the CLI and embedders share one set
/// of type identities instead of compiling duplicate file modules.
pub const git_fast_export = @import("git/git_fast_export.zig");
pub const git_import = @import("git/git_import.zig");
pub const submanifest_editor = @import("submanifest_editor.zig");
/// The vendored CRC-32/ISO-HDLC every on-disk checksum in the store is defined
/// in terms of. Exported for the same reason `storestat` is: the benchmark that
/// measures the checksum must measure the one the product actually runs, and a
/// file can belong to only one module — so `warmread_benchmark.zig` cannot
/// import it by path. Not a promise about the algorithm; the guarantee is only
/// that it is bit-identical to `std.hash.Crc32`, which the formats already fix.
///
/// NOT a precedent for exporting other leaf modules — the default stays the one
/// `repocache.zig` sets, which is no export. This line is forced rather than
/// chosen: `crc32.zig` is a `zit` member (`logstore`, `repocache`, `bisect` and
/// `undo` all import it by path), and its two out-of-module consumers — the
/// benchmark's `phaseCrc` and `crc32_fuzz.zig`'s differential-against-std lane,
/// both of which live in their own root modules — have no other way to reach
/// it. `@import("crc32.zig")` from either is `error: file exists in modules
/// 'zit' and 'root'`. Reverting this export does not close the surface; it
/// deletes the only benchmark of the hot checksum and the only test in the tree
/// that diffs against an outside oracle. Add an export here only when a leaf
/// module acquires an out-of-module consumer with the same no-alternative
/// shape.
pub const crc32 = @import("crc32.zig");
/// The store's own byte accounting — the single physical frame walk behind
/// both `zit stat` and the storage benchmark, so the two can never drift into
/// reporting different totals for the same file.
pub const storestat = @import("storestat.zig");
pub const checkout = @import("checkout.zig");
pub const update = @import("update.zig");
pub const bisect = @import("bisect.zig");
/// The `zit pack` re-deltification pass (storage-delta-base-selection.md §6):
/// the pure store-to-store generational rewrite that re-bases every artifact
/// through `logstore`'s `pickBase` policy. In the module so the CLI wiring
/// (main.zig) and the DST/fuzz harnesses drive the identical transform.
pub const pack = @import("pack.zig");
/// The repository facade — the deep module the north star names as the public
/// repo surface: open a repository, resolve a name, read the derived view, list
/// and cat content. `repoview` (the derived-view loader) is re-exported as its
/// public collaborator; `repocache` stays library-internal, reached only
/// through `Repository`.
pub const Repository = @import("repository.zig").Repository;
pub const repoview = @import("repoview.zig");
/// The durable rebuild checkpoint's operator surface (`zit checkpoint`):
/// `build`/`verify`/`drop`/`tryLoad` and their report types. The container
/// format itself stays module-internal.
pub const checkpoint = @import("checkpoint.zig");
/// The zero-parse read image — the materialized hot query answers a warm read
/// reloads without re-deriving. Re-exported for the simulation harness, which
/// pins the round-trip property (a materialized image is query-equivalent to
/// the derived state it was made from).
pub const repoimage = @import("repoimage.zig");
pub const repo_filename = @import("repository.zig").repo_filename;
/// draft-fossil-submanifests-00 §6.3/§8.1 — the writer-side sub-manifest
/// settings, the emission decision they determine, and the §6.3 analysis pass
/// that measures k. Beside the repository facade, not inside `RepoView`: see
/// the namespace's own doc comment for why the derived view is the wrong home.
pub const submanifest = @import("repository.zig").submanifest;

/// Suite version of the specifications this implementation targets.
pub const rfc_revision = "00";

test {
    // Aggregate every module's tests into the library test binary.
    _ = @import("container.zig");
    _ = @import("container_test.zig");
    _ = @import("delta.zig");
    _ = @import("delta_test.zig");
    _ = @import("artifact.zig");
    _ = @import("artifact_test.zig");
    // Importer foundation tests remain test-only; none of their private
    // implementation modules enter the shipped `zit` API.
    _ = @import("submanifest_editor_test.zig");
    _ = @import("git/git_fast_export_test.zig");
    _ = @import("repostate.zig");
    _ = @import("repostate_test.zig");
    _ = @import("sync.zig");
    _ = @import("sync_test.zig");
    _ = @import("managed.zig");
    // The folded store layers and their sibling public-surface test files.
    _ = @import("storage.zig");
    _ = @import("logstore.zig");
    _ = @import("logstore_test.zig");
    _ = @import("storestat.zig");
    _ = @import("pack.zig");
    _ = @import("checkout.zig");
    _ = @import("update.zig");
    _ = @import("update_test.zig");
    // The repository facade and its derived-view collaborators.
    _ = @import("repoview.zig");
    _ = @import("repoimage.zig");
    _ = @import("repocache.zig");
    // The vendored CRC-32/ISO-HDLC the storage formats are checksummed with.
    _ = @import("crc32.zig");
    _ = @import("repository.zig");
    _ = @import("repository_test.zig");
    // The durable prefix checkpoint (`.zit-cache/checkpoint`) and its suite.
    _ = @import("checkpoint.zig");
    _ = @import("checkpoint_test.zig");
    // The checkout-local bisection state module (`.zit-bisect`).
    _ = @import("bisect.zig");
    // Structural pins over the shipped source distribution (LICENSE, the
    // package manifest's `.paths`, the versioned ignore-glob).
    _ = @import("packaging_test.zig");
    // Structural pins over the CI workflow (the battery it runs, the pinned
    // toolchain, and the build steps it deliberately skips).
    _ = @import("ci_test.zig");
    // The dead-file guard: every src/**/*.zig must be reachable from a test root,
    // so a moved file cannot silently stop running its tests.
    _ = @import("tidy.zig");
    // The release-assert guard: no NEW `std.debug.assert` may stand in for
    // validation of untrusted input in a `pub fn` that returns an error union.
    _ = @import("release_assert_test.zig");
}