package main

import "core:fmt"
import "core:strings"

TokenType :: enum {
	Text,
	Italics,
	Bold,
	BreakLine,
	Heading,
}

TokenMode :: enum {
	Start,
	End,
}

TokenValue :: union {
	string,
	int,
	TokenMode,
}

Token :: struct {
	type:  TokenType,
	value: TokenValue,
	child: [dynamic]Token,
}

token_tree := [dynamic]Token{}

replace_text :: proc(text: string, start: int, len_: int, repl: string) -> string {
	builder := strings.builder_make(context.temp_allocator)
	strings.write_string(&builder, text[:start])
	strings.write_string(&builder, repl)
	strings.write_string(&builder, text[start + len_:])
	return strings.to_string(builder)
}

parse_header :: proc(line: string) -> (int, string) {
	if len(line) == 0 {
		return 0, line
	}

	lvl := 0
	for lvl < len(line) && line[lvl] == '!' {
		lvl += 1
	}
	if lvl == 0 || lvl >= len(line) || line[lvl] != ' ' {
		return 0, line
	}
	return lvl, line[lvl + 1:]
}

parse :: proc(lines: []string, allocator := context.allocator) -> [dynamic]Token {
	for untrimmed_line in lines {
		line := strings.trim_space(untrimmed_line)

		if len(line) == 0 {
			append(&token_tree, Token{TokenType.BreakLine, TokenMode.Start, nil})
			continue
		}

		// lvl, text := parse_header(trimmed)
		// is_header := lvl > 0

		// if is_header {
		// 	fmt.sbprintf(&builder, "<h%d>", lvl)
		// 	strings.write_string(&builder, text)
		// 	fmt.sbprintf(&builder, "</h%d>", lvl)
		// } else {
		// 	strings.write_string(&builder, text)
		// 	strings.write_string(&builder, "<br>")
		// }

		// strings.write_string(&builder, "\n")
	}

	return token_tree
}