import os, json, sqlite3, shutil
from typing import Optional, Any
from lib_py.agents.base import BaseAgentAdapter, DiscoveryContext

class AgyAgentAdapter(BaseAgentAdapter):
    @property
    def name(self) -> str:
        return 'agy'

    @property
    def own_key(self) -> str:
        return 'agy_conversation_id_own'

    @property
    def ready_tokens(self) -> str:
        return 'Antigravity'

    @property
    def exit_key(self) -> str:
        return 'Exit'

    @property
    def delegate_agent_key(self) -> str:
        return 'antigravity-cli'

    @property
    def identity_cache_fields(self) -> tuple:
        return ('conversation_id', 'conversation_db', 'conversation_brain_dir')

    @property
    def input_prompt(self) -> str:
        return '>'

    @property
    def input_placeholder(self) -> str:
        return ''

    @property
    def input_rule_pattern(self) -> str:
        return '─{10,}'

    def artifact_path(self, uuid: str, ctx: DiscoveryContext) -> str:
        return f"{ctx.home_dir}/.gemini/antigravity-cli/conversations/{uuid}.db"

    def verify_artifact(self, uuid: str, ctx: DiscoveryContext) -> bool:
        path = self.artifact_path(uuid, ctx)
        if not os.path.exists(path):
            return False
        if ctx.epoch and os.path.getmtime(path) < ctx.epoch:
            return False
        if ctx.mode == "discover":
            lc = f"{ctx.home_dir}/.gemini/antigravity-cli/cache/last_conversations.json"
            cache_match = False
            if os.path.exists(lc):
                try:
                    with open(lc) as f:
                        lc_data = json.load(f)
                    cache_match = (lc_data.get(ctx.cwd) == uuid)
                except Exception:
                    cache_match = False
            if not cache_match:
                if uuid in (ctx.row.get("_sibling_claimed_uuids") or []):
                    return False
        try:
            conn = sqlite3.connect(path)
            r = conn.execute("SELECT count(*) FROM steps").fetchone()
            conn.close()
            if not r or r[0] < 1:
                return False
        except Exception:
            return False
        return True

    def purge_artifacts(self, uuid: str, ctx: DiscoveryContext) -> list:
        purged = []
        db = self.artifact_path(uuid, ctx)
        if os.path.exists(db):
            os.remove(db)
            purged.append(db)
        brain = f"{ctx.home_dir}/.gemini/antigravity-cli/brain/{uuid}"
        if os.path.isdir(brain):
            shutil.rmtree(brain, ignore_errors=True)
            purged.append(brain)
        return purged

    def spawn_spec(self, binary: str, session_uuid: str = "", use_wrapper: bool = False) -> str:
        return f"{binary} --dangerously-skip-permissions"

    def resume_spec(self, binary: str, session_uuid: str, materialized: bool = False) -> str:
        if materialized and session_uuid:
            return f"{binary} --dangerously-skip-permissions --conversation {session_uuid}"
        return f"{binary} --dangerously-skip-permissions"

    def auth_ok(self, run_cmd: Optional[Any] = None) -> bool:
        home = os.environ.get("HOME_DIR") or os.environ.get("HOME") or os.path.expanduser("~")
        return os.path.exists(f"{home}/.gemini/oauth_creds.json") or os.path.exists(f"{home}/.gemini/antigravity-cli/antigravity-oauth-token")

    def discover(self, ctx: DiscoveryContext) -> list:
        lc = f"{ctx.home_dir}/.gemini/antigravity-cli/cache/last_conversations.json"
        if os.path.exists(lc):
            try:
                with open(lc) as f:
                    cand = json.load(f).get(ctx.workspace)
                if cand and self.verify_artifact(cand, ctx):
                    return [cand]
            except Exception:
                pass
        return []
