chore(doc): finish spec doc

Signed-off-by: Kaiyang Wu <self@origincode.me>

scribblings/aosc.scrbl

@@ -2,9 +2,143 @@
 @require[@for-label[aosc
                     racket/base]]
 
-@title{aosc}
-@author{origincode}
+@title{AOSC Racket Packaging Tools}
+@author[(author+email "Kaiyang Wu" "origincode@aosc.io")]
 
 @defmodule[aosc]
 
-Package Description Here
+AOSC Racket Packaging Tools provides tools to write an AOSC package definition
+in Racket, and to convert to the good old @tt{spec} and @tt{defines} files.
+
+@section{Specification File}
+
+@subsection{Example}
+
+An example @tt{spec} written in Racket is shown below. Let's get started by requiring
+the @tt{aosc} module:
+
+@racket[(require aosc)]
+
+A minimal @racket[spec] requires a @racket[ver] and a @racket[dummysrc?] set to
+@racket[#t].
+
+@racketblock[
+(spec #:ver "0.0.1"
+      #:dummysrc? #t)
+]
+
+Voilà! We have a small @tt{spec}.
+
+@subsection{Reference}
+
+@defproc[(spec-type? [obj any/c]) boolean?]{
+Returns @racket[#t] if @racket[obj] is a specification struct, @racket[#f]
+otherwise.
+}
+
+@defproc[(spec [#:ver ver string?]
+               [#:rel rel exact-nonnegative-integer? #f]
+               [#:srcs srcs (or/c (hash/c arch? (listof src?)) (listof src?))
+                null]
+               [#:subdir subdir string? #f]
+               [#:chksums chksums (or/c (hash/c arch? (listof chksum?)) (listof
+                                                                          chksum?))
+                null]
+               [#:chkupdate chkupdate chkupdate? #f]
+               [#:dummysrc? dummysrc? boolean? #f])
+         spec-type?]{
+Generates a @racket[spec-type?] to be used or converted to a plain text @tt{spec}
+file. Check @url{https://wiki.aosc.io/developer/packaging/acbs/spec-format/} and
+@url{https://wiki.aosc.io/developer/packaging/aosc-findupdate/} for more information.
+
+@racket[srcs] and @racket[chksums] can either be lists of sources and checksums
+or a @racket[hash] of architecture symbol and list of sources or checksums pair.
+
+Currently supported architectures: @racket['amd64], @racket['arm64],
+@racket['loongarch64], @racket['ppc64el], @racket['loongson3],
+@racket['riscv64].
+}
+
+@defproc[(write-spec [spec spec-type?]
+                     [out output-port?])
+         void?]{
+Writes @racket[spec] to @racket[out] in the form of a subset of
+@hyperlink["https://wiki.aosc.io/developer/automation/apml/" "APML"].
+}
+
+@subsubsection{@racket[SRCS] Options and Types}
+
+@defproc[(src-option? [obj any/c]) boolean?]{
+Returns @racket[#t] if @racket[obj] is a @tt{src} option, @racket[#f]
+otherwise.
+}
+
+@defproc*[([(branch [name string?]) src-option?]
+           [(commit [hash string?]) src-option?]
+           [(rename [name string?]) src-option?]
+           [(submodule [method (or/c boolean? symbol?)]) src-option?]
+           [(copy-repo? [val boolean?]) src-option?])]{
+@tt{SRCS} options, @racket[submodule] accepts either @racket['recursive] or a
+@racket[boolean?] value.
+}
+
+@defproc[(src? [obj any/c]) boolean?]{
+Returns @racket[#t] if @racket[obj] is a @tt{src}, @racket[#f] otherwise.
+}
+
+@defproc*[([(git [url string?]
+                 [#:options options (listof src-option?) null])
+            src?]
+           [(tbl [url string?]
+                 [#:options options (listof src-option?) null])
+            src?])]{
+@tt{SRCS} types, @racket[tbl] only accepts @racket[rename] option.
+}
+
+@subsubsection{@racket[CHKSUMS] Types}
+
+@defproc[(chksum? [obj any/c]) boolean?]{
+Returns @racket[#t] if @racket[obj] is a @tt{chksum}, @racket[#f] otherwise.
+}
+
+@defproc*[([(checksum [algorithm algorithm?]
+                      [value string?])
+            chksum?]
+           [(skip) chksum?])]{
+@tt{CHKSUMS} types, for supported hashing algorithm symbols, check
+@url{https://wiki.aosc.io/developer/packaging/acbs/appendix/#supported-checksum-hashing-algorithm}
+for more information.
+
+@racket[skip] is an empty placeholder for skipping checksum verification.
+}
+
+@subsubsection{@racket[CHKUPDATE] Types}
+
+@defproc[(chkupdate? [obj any/c]) boolean?]{
+Returns @racket[#t] if @racket[obj] is a @tt{chkupdate}, @racket[#f] otherwise.
+}
+
+@defproc*[([(anitya [id exact-nonnegative-integer?]) chkupdate?]
+           [(github [repo string?]
+                    [pattern string? #f]
+                    [sort-version boolean? #f])
+            chkupdate?]
+           [(gitlab [repo string?]
+                    [instance string? #f]
+                    [pattern string? #f]
+                    [sort-version boolean? #f])
+            chkupdate?]
+           [(gitweb [url string?]
+                    [pattern string? #f])
+            chkupdate?]
+           [(git-generic [url string?]
+                         [pattern string? #f])
+            chkupdate?]
+           [(html [url string?]
+                  [pattern string?])
+            chkupdate?])]{
+@tt{CHKUPDATE} types, check
+@hyperlink["https://wiki.aosc.io/developer/packaging/aosc-findupdate"
+           "aosc-findupdate"]
+for more information.
+}