#!/usr/bin/csi -s

(use extras posix matchable)
(include "chicken-env")

(define (print-error msg . args)
  (apply fprintf (current-error-port) msg args)
  (newline (current-error-port)))

(define (usage)
  (fail "Usage: ~A [OPTION ...] NAME
Build Chicken in current directory and install it to $CHICKENS/NAME.

Options:
  -b  build and use a bootstrap Chicken
  -d  make a debug build
  -s  use NAME as PROGRAM_SUFFIX
  -p  use NAME as PORGRAM_PREFIX"
        (program-name)))

(define build-boot-chicken? #f)
(define debug-build? #f)
(define suffix-name? #f)
(define prefix-name? #f)
(define chicken-name #f)

(when (null? (command-line-arguments))
  (usage))

(let loop ((args (command-line-arguments)))
  (match args
    (("-b" rest ...)
     (set! build-boot-chicken? #t)
     (loop rest))
    (("-s" rest ...)
     (set! suffix-name? #t)
     (loop rest))
    (("-p" rest ...)
     (set! prefix-name? #t)
     (loop rest))
    (("-d" rest ...)
     (set! debug-build? #t)
     (loop rest))
    ((name)
     (set! chicken-name name))
    (rest
     (print-error "Invalid arguments: ~S" rest)
     (usage))))

(unless chicken-name
  (usage))

(when (and suffix-name? prefix-name?)
  (fail "Only one of -p and -s can be passed"))

(define chicken-path
  (normalize-pathname (make-pathname chicken-coop chicken-name)))

(define (run name . args)
  (unless (process-wait (process-run name args))
    (exit 1)))

(when (file-exists? chicken-path)
  (printf "Chicken already exists: ~A" chicken-path)
  (if (yes-or-no? "Purge and continue?" #f #f exit)
      (run "rm" "-rf" chicken-path)
      (exit)))

(create-directory chicken-path)

(when build-boot-chicken?
  (run "make" "boot-chicken")
  (setenv "CHICKEN" "./chicken-boot"))

(when prefix-name?
  (setenv "PROGRAM_PREFIX" (string-append chicken-name "-")))

(when suffix-name?
  (setenv "PROGRAM_SUFFIX" (string-append "-" chicken-name)))

(when debug-build?
  (setenv "DEBUGBUILD" "1"))

(setenv "PREFIX" chicken-path)
(run "make")
(run "make" "install")