import re

from talon import Module, actions

from .snippet_types import Snippet
from .snippets_insert_raw_text import go_to_next_stop_raw, insert_snippet_raw_text

mod = Module()


@mod.action_class
class Actions:
    def insert_snippet(body: str):
        """Insert snippet"""
        insert_snippet_raw_text(body)

    def move_cursor_to_next_snippet_stop():
        """Moves the cursor to the next snippet stop"""
        go_to_next_stop_raw()

    def insert_snippet_by_name(
        name: str,
        substitutions: dict[str, str] = None,
    ):
        """Insert snippet <name>"""
        snippet: Snippet = actions.user.get_snippet(name)
        body = snippet.body

        if substitutions:
            for k, v in substitutions.items():
                reg = re.compile(rf"\${k}|\$\{{{k}\}}")
                if not reg.search(body):
                    raise ValueError(
                        f"Can't substitute non existing variable '{k}' in snippet '{name}'"
                    )
                body = reg.sub(v, body)

        actions.user.insert_snippet(body)

    def insert_snippet_by_name_with_phrase(name: str, phrase: str):
        """Insert snippet <name> with phrase <phrase>"""
        snippet: Snippet = actions.user.get_snippet(name)
        substitutions = {}

        for variable in snippet.variables:
            if variable.insertion_formatters is not None:
                formatters = ",".join(variable.insertion_formatters)
                formatted_phrase = actions.user.formatted_text(phrase, formatters)
                substitutions[variable.name] = formatted_phrase

        if not substitutions:
            raise ValueError(
                f"Can't use snippet phrase. No variable with insertion formatter in snippet '{name}'"
            )

        actions.user.insert_snippet_by_name(name, substitutions)