'use strict'

#===========================================================================================================
FS                        = require 'node:fs'
PATH                      = require 'node:path'
{ resolve,
  join,
  dirname,              } = PATH
# { matchesGlob,          } = require
{ walk_lines_with_positions,
                        } = ( require './unstable-fast-linereader-brics' ).require_fast_linereader()
{ warn,
  log,
  debug,                } = console
{ rpr,                  } = ( require './loupe-brics' ).require_loupe()
{ spawnSync,            } = require 'node:child_process'


###
base_path = PATH.resolve PATH.join __dirname, '..'
pattern   = '*.md'
entries   = FS.readdirSync base_path, { recursive: true, }
entries.sort()
for entry in entries
  continue unless ( FS.statSync entry ).isFile()
  continue unless PATH.matchesGlob entry, pattern
  debug 'Ωcrmmd___1', entry
###

#-----------------------------------------------------------------------------------------------------------
file_has_uncommitted_changes = ( path ) ->
  { status, } = spawnSync 'git', [ 'diff', '--quiet', path, ], { cwd: base_path, }
  return false if status is 0
  return true

#-----------------------------------------------------------------------------------------------------------
clear = ( path ) ->
  FS.writeFileSync path, ''
  return null

#-----------------------------------------------------------------------------------------------------------
append = ( path, text ) ->
  FS.appendFileSync path, "#{text}\n"
  return null

#===========================================================================================================
base_path           = resolve join __dirname, '..'
src_path            = resolve join base_path, 'doc-src'
main_path           = resolve src_path, 'main.md'
target_path         = resolve base_path, 'README.md'
insertion_ref_path  = resolve dirname main_path
insert_matcher      = ///
  ^
  #(?<prefix>.*?)
  (?<command> <!insert )
  \s+ src= (?<path> [^>]+ ) >
  \s*
  $
  ///

#===========================================================================================================
debug 'Ωcrmmd___2', { base_path, src_path, main_path, }

#===========================================================================================================
if file_has_uncommitted_changes target_path
  warn()
  warn "target file"
  warn "  #{target_path}"
  warn "has uncomitted changes; terminating"
  warn()
  process.exit 111


#===========================================================================================================
clear target_path
for { line, } from walk_lines_with_positions main_path
  # debug 'Ωcrmmd___3', rpr line
  unless ( match = line.match insert_matcher )?
    append target_path, line
    continue
  groups      = { match.groups..., }
  insert_path = resolve join insertion_ref_path, groups.path
  # debug 'Ωcrmmd___4'
  # debug 'Ωcrmmd___5', groups
  log 'Ωcrmmd___6', "inserting #{insert_path}"
  #.........................................................................................................
  append target_path, "<!-- BEGIN #{line} -->"
  append target_path, insert_line for { line: insert_line, } from walk_lines_with_positions insert_path
  append target_path, "<!-- END #{line} -->"
  #.........................................................................................................