#!/bin/bash


# Allow verbosity
if [ "$1" == "-v" ]; then
    set -x;
    shift;
fi

# Allow passing in more than just the landing README.md, but default to ./README.md
files="$@"
if [ -z "$files" ]; then
    files="./README.md"
fi

# Iterate on each file.
for file in $files; do

    # Reset order tracking
    linenum=0

    # Enforce each of the lines
    for line in '^# Etymology$' '^# Relevant Files and Software$' '^# Available Clients$' '^# Equivalents or Competition$'; do
        newlinenum="$(grep -nE "$line" "$file" | cut -f 1 -d ':')"

        # Case 1: Missing section
        if [ -z "$newlinenum" ]; then
            echo "$file" is missing "$line"
            exit 1
        fi

        # Case 2: Line is out of order
        if [ "$newlinenum" -lt "$linenum" ]; then
            echo "$file" has section "$line" out of order.
            exit 2
        fi
        linenum="$newlinenum"

    done

    # Case 3: Spelling errors are present
    spellerrors="$(cat "$file" | aspell -p <(echo personal_ws-1.1 en 0; cat ~/.vim/spell/en.utf-8.add) list)"
    if [ `echo "$spellerrors" | wc -l` -ne 1 ]; then
        echo "$file" has spelling errors.
        echo "$spellerrors"
        exit 3
    fi

done

# Wiki documentation is procedurally generated in its own repo.
if ! grep -E ^wiki/ .gitignore 1>/dev/null; then
    echo The wiki folder needs to be ignored.
    exit 4
fi