Text toolkit

# title: Text toolkit
# category: Vibescript Showcase
# difficulty: Showcase
# summary: Slice and align text with Ruby-style partition, center, chars, and start_with? helpers.
# description: The 1.0 string library fills out the Ruby-compatible surface, so parsing and formatting stay declarative instead of hand-rolled index math.
# tags: strings, text, formatting
# vibe: 0.4

def split_setting(line: string) -> hash
  parts = line.partition("=")
  {
    key: parts[0],
    assigned: parts[1] == "=",
    value: parts[2]
  }
end

def domain_of(email: string) -> string
  email.rpartition("@")[2]
end

def banner(label: string, width: int) -> string
  label.center(width, "*")
end

def initials(name: string) -> string
  name.split(" ").map { |word| word.chars[0] }.join("")
end

def flagged?(line: string) -> bool
  line.start_with?("WARN", "ERROR")
end

def run
  {
    setting: split_setting("timeout=30"),
    no_assignment: split_setting("bare-token"),
    domain: domain_of("ada@vibescript.dev"),
    banner: banner(" ship it ", 20),
    initials: initials("Grace Brewster Hopper"),
    warn_flagged: flagged?("WARN disk almost full"),
    info_flagged: flagged?("INFO all good")
  }
end