#!/bin/sh
# render_tree: render all the files in a directory tree to html or just copy them
# if they are not markdown
# arguments:
# $1: input directory path
# $2: output directory path

# Determine the location of render_file based on the location
# of this script
script_dir=$(dirname "$0")

traverse_dir() {
    # Iterate over files in the given directory
    for file in "$1"/*
    do
        # Recurse into directories in the given directory
        if [ -d "$file" ]
        then
            printf '%s is a directory, recursing...\n' "$file" >&2
            traverse_dir "$file" "$2"
        elif [ -f "$file" ]
        then
            # If the file ends in .md, assume it's a markdown file and
            # pass it as an argument to render_file, else just copy it straight
            # from the input directory to the output directory
            if basename "$file" | grep -q "\.md$"
            then
                printf 'Rendering %s...\n' "$file" >&2
                # Use basename to strip the .md suffix from markdown files, then
                # append .html
                name="$(basename -s .md "$file")"
                "$script_dir"/render_file "$file" > "$2"/"$name".html
            else
                printf '%s is not markdown, copying...\n' "$file" >&2
                name="$(basename "$file")"
                cp "$file" "$2"/"$name"
            fi
        fi
    done
}

traverse_dir "$1" "$2"
printf 'Done.\n' >&2