#! /usr/bin/env nix-shell

#! nix-shell --pure --keep NIX_SSL_CERT_FILE --keep GITHUB_TOKEN -i bash -p git mustache-go niv direnv nix

set -Eeuxo pipefail

# init-haskell location

base=$(dirname "$(readlink -f "$0")")

# Variables

data=$(mktemp)

projectname=${PWD##*/}

cat <<EOF >$data

{ "author": "$(git config user.name)"

, "email": "$(git config user.email)"

, "ghc":

{ major: 8

, minor: 10

, patch: 7

}

, "snapshot": "2022-03-01T00:00:00Z"

, "projectname": "${projectname}"

}

EOF

# Set up git

git init

mustache $base/templates/.gitignore >.gitignore <$data

# Set up niv

mkdir nix || exit 0

mustache $base/templates/sources.json >./nix/sources.json <$data

niv init

# Create hpack project

mustache $base/templates/cabal.project >./cabal.project <$data

mustache $base/templates/package.yaml >./package.yaml <$data

# Add nix files

mustache $base/templates/snapshot.nix >./snapshot.nix <$data

mustache $base/templates/compiler.nix >./compiler.nix <$data

mustache $base/templates/default.nix >./default.nix <$data

mustache $base/templates/shell.nix >./shell.nix <$data

# Add hie.yaml file to help language server figure out what's what

mustache $base/templates/hie.yaml >./hie.yaml <$data

# Add some vim config to help editor pick up the language server

mkdir .vim

mustache $base/templates/.vim/coc-settings.json >./.vim/coc-settings.json <$data

# Create direnv file

mustache $base/templates/.envrc >./.envrc <$data

# Add note about caching

mustache $base/templates/CACHES.md >./CACHES.md <$data

# Add a hello world source file

mkdir lib || exit 0

mustache $base/templates/Lib.hs >./lib/Lib.hs <$data

mkdir app || exit 0

mustache $base/templates/Main.hs >./app/Main.hs <$data

git add .