#!/bin/sh

global SRC_DIR := $[pwd]

echo "Cleaning up the overlay work area. This may take a while..."
rm -rf work/overlay
mkdir -p work/overlay

# Just in case we execute the overlay software generation script before we
# execute the main build script.
mkdir -p work/src/minimal_overlay

# -p stops errors if the directory already exists
mkdir -p source/overlay

cd minimal_overlay

for dir in [$[ls -d */ !2 >/dev/null]]  {
  rm -rf $dir
  echo "Overlay folder '$dir' has been removed."
}

echo "Ready to continue with the overlay software."

cd $SRC_DIR

(CommandList
  children: [
    (Assignment
      keyword: Assign_None
      pairs: [
        (assign_pair
          lhs: (LhsName name:SRC_DIR)
          op: Equal
          rhs: 
            {
              (CommandSubPart
                command_list: (CommandList children:[(C {(pwd)})])
                left_token: <Left_CommandSub "$(">
                spids: [5 7]
              )
            }
          spids: [4]
        )
      ]
      spids: [4]
    )
    (C {(echo)} {(DQ ("Cleaning up the overlay work area. This may take a while..."))})
    (C {(rm)} {(-rf)} {(work/overlay)})
    (C {(mkdir)} {(-p)} {(work/overlay)})
    (C {(mkdir)} {(-p)} {(work/src/minimal_overlay)})
    (C {(mkdir)} {(-p)} {(source/overlay)})
    (C {(cd)} {(minimal_overlay)})
    (ForEach
      iter_name: dir
      iter_words: [
        {
          (CommandSubPart
            command_list: 
              (CommandList
                children: [
                  (SimpleCommand
                    words: [{(ls)} {(-d)} {(Lit_Other "*") (/)}]
                    redirects: [(Redir op_id:Redir_Great fd:2 arg_word:{(/dev/null)} spids:[71])]
                  )
                ]
              )
            left_token: <Left_CommandSub "$(">
            spids: [63 73]
          )
        }
      ]
      do_arg_iter: False
      body: 
        (DoGroup
          children: [
            (C {(rm)} {(-rf)} {($ VSub_Name "$dir")})
            (C {(echo)} {(DQ ("Overlay folder '") ($ VSub_Name "$dir") ("' has been removed."))})
          ]
          spids: [77 95]
        )
      spids: [62 75]
    )
    (C {(echo)} {(DQ ("Ready to continue with the overlay software."))})
    (C {(cd)} {($ VSub_Name "$SRC_DIR")})
  ]
)