from typing import Optional

from pydantic import BaseModel, Field

from core.agents.base import BaseAgent
from core.agents.convo import AgentConvo
from core.agents.response import AgentResponse
from core.llm.parser import JSONParser
from core.telemetry import telemetry
from core.templates.registry import PROJECT_TEMPLATES, ProjectTemplateEnum
from core.ui.base import ProjectStage

ARCHITECTURE_STEP = "architecture"
WARN_SYSTEM_DEPS = ["docker", "kubernetes", "microservices"]
WARN_FRAMEWORKS = ["next.js", "vue", "vue.js", "svelte", "angular"]
WARN_FRAMEWORKS_URL = "https://github.com/Pythagora-io/gpt-pilot/wiki/Using-GPT-Pilot-with-frontend-frameworks"


# FIXME: all the reponse pydantic models should be strict (see config._StrictModel), also check if we
# can disallow adding custom Python attributes to the model
class SystemDependency(BaseModel):
    name: str = Field(
        None,
        description="Name of the system dependency, for example Node.js or Python.",
    )
    description: str = Field(
        None,
        description="One-line description of the dependency.",
    )
    test: str = Field(
        None,
        description="Command line to test whether the dependency is available on the system.",
    )
    required_locally: bool = Field(
        None,
        description="Whether this dependency must be installed locally (as opposed to connecting to cloud or other server)",
    )


class PackageDependency(BaseModel):
    name: str = Field(
        None,
        description="Name of the package dependency, for example Express or React.",
    )
    description: str = Field(
        None,
        description="One-line description of the dependency.",
    )


class Architecture(BaseModel):
    architecture: str = Field(
        None,
        description="General description of the app architecture.",
    )
    system_dependencies: list[SystemDependency] = Field(
        None,
        description="List of system dependencies required to build and run the app.",
    )
    package_dependencies: list[PackageDependency] = Field(
        None,
        description="List of framework/language-specific packages used by the app.",
    )
    template: Optional[ProjectTemplateEnum] = Field(
        None,
        description="Project template to use for the app, if any (optional, can be null).",
    )


class Architect(BaseAgent):
    agent_type = "architect"
    display_name = "Architect"

    async def run(self) -> AgentResponse:
        await self.ui.send_project_stage(ProjectStage.ARCHITECTURE)

        llm = self.get_llm()
        convo = AgentConvo(self).template("technologies", templates=PROJECT_TEMPLATES).require_schema(Architecture)

        await self.send_message("Planning project architecture ...")
        arch: Architecture = await llm(convo, parser=JSONParser(Architecture))

        await self.check_compatibility(arch)
        await self.check_system_dependencies(arch.system_dependencies)

        spec = self.current_state.specification.clone()
        spec.architecture = arch.architecture
        spec.system_dependencies = [d.model_dump() for d in arch.system_dependencies]
        spec.package_dependencies = [d.model_dump() for d in arch.package_dependencies]
        spec.template = arch.template.value if arch.template else None

        self.next_state.specification = spec
        telemetry.set(
            "architecture",
            {
                "description": spec.architecture,
                "system_dependencies": spec.system_dependencies,
                "package_dependencies": spec.package_dependencies,
            },
        )
        telemetry.set("template", spec.template)
        return AgentResponse.done(self)

    async def check_compatibility(self, arch: Architecture) -> bool:
        warn_system_deps = [dep.name for dep in arch.system_dependencies if dep.name.lower() in WARN_SYSTEM_DEPS]
        warn_package_deps = [dep.name for dep in arch.package_dependencies if dep.name.lower() in WARN_FRAMEWORKS]

        if warn_system_deps:
            await self.ask_question(
                f"Warning: GPT Pilot doesn't officially support {', '.join(warn_system_deps)}. "
                f"You can try to use {'it' if len(warn_system_deps) == 1 else 'them'}, but you may run into problems.",
                buttons={"continue": "Continue"},
                buttons_only=True,
                default="continue",
            )

        if warn_package_deps:
            await self.ask_question(
                f"Warning: GPT Pilot works best with vanilla JavaScript. "
                f"You can try try to use {', '.join(warn_package_deps)}, but you may run into problems. "
                f"Visit {WARN_FRAMEWORKS_URL} for more information.",
                buttons={"continue": "Continue"},
                buttons_only=True,
                default="continue",
            )

        # TODO: add "cancel" option to the above buttons; if pressed, Architect should
        # return AgentResponse.revise_spec()
        # that SpecWriter should catch and allow the user to reword the initial spec.
        return True

    async def check_system_dependencies(self, deps: list[SystemDependency]):
        """
        Check whether the required system dependencies are installed.
        """

        for dep in deps:
            status_code, _, _ = await self.process_manager.run_command(dep.test)
            if status_code != 0:
                if dep.required_locally:
                    remedy = "Please install it before proceeding with your app."
                else:
                    remedy = "If you would like to use it locally, please install it before proceeding."
                await self.send_message(f"❌ {dep.name} is not available. {remedy}")
            else:
                await self.send_message(f"✅ {dep.name} is available.")