#!/usr/bin/env nu

# Set the timezone to UTC
$env.TZ = "UTC"

const BOOK_DEST_DIR = "dest"

# Releases a new version of n34. Requires a clean file tree with no uncommitted changes.
def "main release" [version: string]: [nothing -> nothing] {
    let tag_change_body = "{% for group, commits in commits | group_by(attribute='group') %}\n{{ group | capitalize }}:\n{% for commit in commits %}- {{ commit.message | split(pat='\n') | first | split(pat=':') | slice(start=1) | join(sep=':') | trim | capitalize }} - by {{ commit.author.name}}\n{% endfor %}{% endfor %}"
    mut tag_msg = $"Version ($version) \n(git-cliff --strip all --unreleased --body $tag_change_body)\n"
    mut cargo_file = open "Cargo.toml"
    let old_version = $cargo_file.package.version

    $cargo_file.package.version = $version
    $cargo_file | save -f "Cargo.toml"

    let old_contributors = git show v($old_version):AUTHORS | split row "\n"
    let current_contributors = cat AUTHORS | split row "\n"
    let new_contributors = $current_contributors | where {|user| not ($user in $old_contributors)}

    if not ($new_contributors | is-empty) {
        $tag_msg = $"($tag_msg)\nNew Contributors:\n($new_contributors | each {|line| '- ' + $line} | str join "\n")"
    }

    RUST_LOG=none taplo fmt --config "./.taplo.toml"
    main ci 
    git-cliff -t $"v($version)" out> "./CHANGELOG.md"
    git add .
    git commit -m $"chore: Bump the version to `v($version)`"
    git tag -s -m $tag_msg $"v($version)"
}

# Run the CI
def "main ci" []: [nothing -> nothing] {
    print "🔨 Building n34..."
    cargo build -q
    print "🔍 Checking code formatting..."
    cargo fmt -q -- --check

    let taplo_output = RUST_LOG=none taplo fmt --check --config "./.taplo.toml" | complete 

    if $taplo_output.exit_code != 0 {
        print "❌Toml files is not properly formatted"
        exit 1
    }

    print "🧹 Running linter checks..."
    cargo clippy -q -- -D warnings
    print "🧪 Running tests..."
    cargo test -q

    print "🎉 CI pipeline completed successfully"
}

# Update the changelog
def "main changelog" []: [nothing -> nothing] {
    def get_hash [] { open "./CHANGELOG.md" | hash sha256 }

    let old_hash = get_hash
    git-cliff out> "CHANGELOG.md"

    if old_hash != get_hash {
        git add "CHANGELOG.md"
        git commit -m "chore(changelog): Update the changelog"
        print "The changes have been added to the changelog file and committed"
    } else {
        print "No changes have been added to the changelog"
    }
}

# Deploy the book to Github Pages
def "main deploy" []: [nothing -> nothing] {
    mdbook build --dest-dir $BOOK_DEST_DIR
    cd $BOOK_DEST_DIR
    git init .
    git checkout -B gh-pages
    touch ".nojekyll"
    print "n34.dev" out> "CNAME"

    git add .
    git commit -m "Deploy the book to github pages"
    git remote add origin "git@github.com:TheAwiteb/n34-book"
    git push origin gh-pages -f
    cd ..
    rm -fr $BOOK_DEST_DIR
}

# n34 tasks runner. e.g. `./tasks deploy`
def main []: [nothing -> string] {
    # Returns the tasks
    "n34 tasks runner. Available tasks:\n\n" + (
    help main
      | split row "\n"
      | each {|line| $line | ansi strip | str trim | str replace "(custom) " ""}
      | where {|line| $line | str starts-with tasks}
      | each {|line| $"(ansi green)./tasks(ansi reset) ($line | str replace 'tasks ' '')"}
      | str join "\n"
    ) + ""
}