#!/usr/bin/env -S jq -r -f
# Takes iditacards output json and produces the dynamic ninja build
# Example usage: cue export -- *.cue *.yaml | ./configure.jq > output/build.ninja

def ifblank(x): if . | length > 0 then . else x end;
def cuesources: $ARGS.positional | join(" ");
def header: "# Generated from configure.jq, do not edit this file!

root = .

rule configure
  description = recreate build.ninja using configure.jq
  command = cue export -- *.cue *.yaml | ./configure.jq --args -- *.cue *.yaml > $out
  generator = 1

build build.ninja: configure | configure.jq \(cuesources)

base = .
include rules.ninja

build output/.everything.json: cuegen \(cuesources)
  filter = .
";

def dirof: split("/")[0:-1] | join("/") | if . | length > 0 then . + "/" else "" end;
def filof: . as $saved | split("/")[-1] | ifblank($saved);
def rawof: filof as $saved | split(".")[0:-1] | join(".") | ifblank($saved);

def generate_pdf_builds($dir; $raw; $tex): "
build output/\($dir)\($raw).pdf: tex2pdf \($tex) || output/\($dir).\($raw).pdf.dd
  dyndep = output/\($dir).\($raw).pdf.dd

build output/\($dir).\($raw).pdf.dd: scantex \($tex)
  target = output/\($dir)\($raw).pdf
";

def generate_png_from_pdf_builds($dir; $raw; $pdf):
    (.size | split("x")[0]) as $w |
    (.size | split("x")[1]) as $h |
    (if .print then "raw." else "" end) as $ext | "
build output/\($dir)\($raw).\($ext)png: pdf2png \($pdf)
  w = \($w)
  h = \($h)
";

def generate_png_copy_builds($dir; $raw; $png):
    (if .print then "raw." else "" end) as $ext | "
build output/\($dir)\($raw).\($ext)png: copy \($png)
";

def generate_print_png_builds($dir; $raw; $rawpng):
    if .print then "
build output/\($dir)\($raw).png: convert \($rawpng)
  args = \(.print)
" else empty end;

def generate_template_builds:
    (.name | dirof) as $dir |
    (.name | rawof) as $raw | ("
build output/\($dir).\($raw).update | output/\($dir).\($raw).json: extract output/.everything.json
  filter = --arg asset '\(.name)' '.assets[$$asset].data'
  target = output/\($dir).\($raw).json

build output/\($dir)/tex/\($raw).tex: template2tex output/\($dir).\($raw).json | templates/\(.template)
  template = templates/\(.template)
",
generate_pdf_builds($dir; $raw; "output/\($dir)/tex/\($raw).tex"),
generate_png_from_pdf_builds($dir; $raw; "output/\($dir)\($raw).pdf"),
generate_print_png_builds($dir; $raw; "output/\($dir)\($raw).raw.png")
);

def generate_image_builds:
    (.name | dirof) as $dir |
    (.name | rawof) as $raw | (
generate_png_copy_builds($dir; $raw; .source),
generate_print_png_builds($dir; $raw; "output/\($dir)\($raw).raw.png")
);

def generate_tex_builds:
    (.size | split("x")[0]) as $w |
    (.size | split("x")[1]) as $h |
    (.name | dirof) as $dir |
    (.name | rawof) as $raw | (
generate_pdf_builds($dir; $raw; .source),
generate_png_from_pdf_builds($dir; $raw; "output/\($dir)\($raw).pdf"),
generate_print_png_builds($dir; $raw; "output/\($dir)\($raw).raw.png")
);

def generate_texdoc_builds:
    (.name | dirof) as $dir |
    (.name | rawof) as $raw | "
build output/\($dir)\($raw).pdf: tex2pdf2x \(.source) || output/\($dir).\($raw).pdf.dd
  dyndep = output/\($dir).\($raw).pdf.dd

build output/\($dir).\($raw).pdf.dd: scantex \(.source)
  target = output/\($dir)\($raw).pdf
";

def generate_cat_builds:
    (.contents | map("output/" + . + ".pdf") | join(" ")) as $pdfcontents |
    (.contents | map("output/" + . + ".png") | join(" ")) as $pngcontents |
    (.contents | map("output/" + . + ".raw.png") | join(" ")) as $rawcontents |
    (.name | dirof) as $dir |
    (.name | rawof) as $raw | "
build output/\($dir)\($raw).pdf: pdfunite \($pdfcontents)
build output/\($dir)\($raw).png: pngunite \($pngcontents)
build output/\($dir)\($raw).raw.png: pngunite \($rawcontents)
";

def generate_builds:
    (select(.kind == "template") | generate_template_builds),
    (select(.kind == "image") | generate_image_builds),
    (select(.kind == "tex") | generate_tex_builds),
    (select(.kind == "texdoc") | generate_texdoc_builds),
    (select(.kind == "cat") | generate_cat_builds);

def expandout: to_entries[] | .value + { name: .key };
def everything: (.assets, .pseudoassets) | expandout;

header,
(everything | generate_builds)