#!/usr/bin/env bash

SUBDIRS=(static/openbsd static/netbsd static/freebsd)

create() {
sqlite3 man.db <<EOF
CREATE TABLE manpages (
    os TEXT,
    name TEXT,
    section INTEGER,
    path TEXT,
    PRIMARY KEY (os, name, section)
);
EOF

    if [[ $? != 0 ]];
    then
        printf "Error: error creating table.\n" >&2
        exit 1
    fi

    for SUBDIR in ${SUBDIRS[*]};
    do
        make -j "$(nproc)" -C "$SUBDIR"

        if [[ $? != 0 ]];
        then
            printf "Error: error building %s man pages.\n" "$SUBDIR" >&2
            exit 1
        fi

        HTML=$(find "$SUBDIR" -type f -name '*.html')

        for FILE in $HTML;
        do
            SECTION=$(basename "$FILE" | sed -E 's|.*\.([0-9])\..*|\1|')
            NAME=$(basename "$FILE" | sed -E 's|(.*)\.[0-9]\.html|\1|')
            OS=$(basename "$SUBDIR")

            if [[ -n "$(echo "$FILE" | grep "man$SECTION\.")" ]];
            then
                NAME="$(echo "$FILE" | sed -E "s|.*man$SECTION\.(.*)/.*|\1|" ).$NAME"
            fi

            echo "INSERT INTO manpages (os, name, section, path) VALUES ('"$OS"', '"$NAME"', '"$SECTION"', '"$FILE"');"
            sqlite3 man.db \
            "INSERT INTO manpages (os, name, section, path) VALUES ('"$OS"', '"$NAME"', '"$SECTION"', '"$FILE"');"

            if [[ $? != 0 ]];
            then
                printf "Error: error inserting ('%s', '%s', '%s', '%s').\n" "$OS" "$NAME" "$SECTION" "$FILE" >&2
                exit 1
            fi
        done
    done

    chmod 400 man.db
}

clean() {
    for SUBDIR in ${SUBDIRS[*]};
    do
        make -C "$SUBDIR" -j "$(nproc)" clean
    done

    rm -f man.db
}

case "$1" in
    create)
        create
        ;;
    clean)
        clean
        ;;
    *)
        printf "Error: \"%s\" not an option.\n" "$1"
        exit 1
        ;;
esac