#!/usr/bin/env bash

# Manages the creation of the text file and the parsing to html file
# also the drafts

declare template_tags_line_header
declare global_url
declare convert_filename

write_entry() {
    f=$2
    if [[ -n $f ]]; then
        if [[ ! -f $f ]]; then
            echo "The file $f doesn't exist"
            delete_includes
            exit
        fi
    else
        TMPFILE=.entry-$RANDOM.md
        echo -e "Title on this line\n" >>"$TMPFILE"
        cat <<EOF >>"$TMPFILE"
The rest of the text file is a **Markdown** blog post. The process will continue
as soon as you exit your editor.

$template_tags_line_header keep-this-tag-format, tags-are-optional, beware-with-underscores-in-markdown, example
EOF
    fi
    chmod 600 "$TMPFILE"

    post_status="E"
    filename=""
    while [[ $post_status != "p" && $post_status != "P" ]]; do
        [[ -n $filename ]] && rm "$filename" # Delete the generated html file, if any

        $EDITOR "$TMPFILE"

        html_from_md=$(make_html "$TMPFILE")
        parse_file "$html_from_md"
        rm "$html_from_md"

        chmod 644 "$filename"
        [[ -n $preview_url ]] || preview_url=$global_url
        echo "To preview the entry, open $preview_url/$filename in your browser"

        echo -n "[P]ost this entry, [E]dit again, [D]raft for later, [C]ancel and quit? (p/e/d/c) "
        read -r post_status
        #Case user cancelled
        if [[ $post_status == c || $post_status == C ]]; then
            rm "$TMPFILE"
            delete_includes
            echo "Your draft was erased. Nothing was changed in your blog."
            exit
        fi
        #Case User choose post
        if [[ $post_status == d || $post_status == D ]]; then
            mkdir -p "drafts/"
            chmod 700 "drafts/"

            title=$(head -n 1 $TMPFILE)
            [[ -n $convert_filename ]] && title=$(echo "$title" | eval "$convert_filename")
            [[ -n $title ]] || title=$RANDOM

            draft=drafts/$title.md
            mv "$TMPFILE" "$draft"
            chmod 600 "$draft"
            rm "$filename"
            delete_includes
            echo "Saved your draft as '$draft'"
            exit
        fi
    done

    mv "$TMPFILE" "${filename%%.*}.md"
    chmod 644 "$filename"
    echo "Posted $filename"
    relevant_tags=$(tags_in_post "$filename")
    if [[ -n $relevant_tags ]]; then
        # shellcheck disable=SC2086 # Intended splitting of $relevant_tags
        relevant_posts="$(posts_with_tags $relevant_tags) $filename"
        rebuild_tags "$relevant_posts" "$relevant_tags"
    fi
}