from __future__ import annotations

from collections.abc import Mapping

import htpy as h
from htpy import Node, Renderable

from repub.components import (
    inline_link,
    muted_action_link,
    page_shell,
    section_card,
    status_badge,
    table_section,
)


def _action_button(
    *,
    label: str,
    tone: str = "default",
    disabled: bool = False,
    post_path: str | None = None,
) -> Renderable:
    classes = {
        "default": "bg-stone-100 text-slate-700 hover:bg-stone-200",
        "danger": "bg-rose-50 text-rose-700 hover:bg-rose-100",
    }
    class_name = (
        "cursor-not-allowed bg-slate-100 text-slate-400" if disabled else classes[tone]
    )
    attributes: dict[str, str] = {}
    if post_path is not None and not disabled:
        attributes["data-on:pointerdown"] = f"@post('{post_path}')"
    return h.button(
        attributes,
        type="button",
        disabled=disabled,
        class_=(
            "inline-flex items-center whitespace-nowrap rounded-full px-3 py-1.5 "
            f"text-sm font-semibold transition {class_name}"
        ),
    )[label]


def _text(values: Mapping[str, object], key: str) -> str:
    return str(values[key])


def _maybe_text(values: Mapping[str, object], key: str) -> str | None:
    value = values.get(key)
    if value in {None, ""}:
        return None
    return str(value)


def _flag(values: Mapping[str, object], key: str) -> bool:
    return bool(values[key])


def _running_row(execution: Mapping[str, object]) -> tuple[Node, ...]:
    return (
        h.div[
            h.div(class_="font-semibold text-slate-950")[_text(execution, "source")],
            h.p(class_="mt-1 font-mono text-xs text-slate-500")[
                _text(execution, "slug")
            ],
        ],
        h.div[
            h.p(class_="font-medium text-slate-900")[
                f"#{_text(execution, 'execution_id')}"
            ],
            h.p(class_="mt-1 text-xs text-slate-500")[
                f"job {_text(execution, 'job_id')}"
            ],
        ],
        h.div[
            h.p(class_="font-medium text-slate-900")[_text(execution, "started_at")],
            h.p(class_="mt-1 text-xs text-slate-500")[_text(execution, "runtime")],
        ],
        status_badge(label=_text(execution, "status"), tone="running"),
        h.div(class_="min-w-56 whitespace-normal")[
            h.p(class_="font-medium text-slate-900")[_text(execution, "stats")],
            h.p(class_="mt-1 text-xs text-slate-500")[_text(execution, "worker")],
        ],
        h.div(class_="flex flex-nowrap items-center gap-3")[
            inline_link(
                href=_text(execution, "log_href"),
                label="View log",
                tone="amber",
            ),
            _action_button(
                label="Stop",
                tone="danger",
                post_path=_maybe_text(execution, "cancel_post_path"),
            ),
        ],
    )


def _upcoming_row(job: Mapping[str, object]) -> tuple[Node, ...]:
    return (
        h.div[
            h.div(class_="font-semibold text-slate-950")[_text(job, "source")],
            h.p(class_="mt-1 font-mono text-xs text-slate-500")[_text(job, "slug")],
        ],
        h.div[
            h.p(class_="font-medium text-slate-900")[_text(job, "next_run")],
            h.p(class_="mt-1 text-xs text-slate-500")[f"job {_text(job, 'job_id')}"],
        ],
        h.p(class_="font-mono text-xs text-slate-600")[_text(job, "schedule")],
        status_badge(
            label=_text(job, "enabled_label"),
            tone=_text(job, "enabled_tone"),
        ),
        h.p(class_="max-w-40 whitespace-normal text-sm text-slate-500")[
            _text(job, "run_reason")
        ],
        h.div(class_="flex flex-nowrap items-center gap-2")[
            _action_button(
                label="Run now",
                disabled=_flag(job, "run_disabled"),
                post_path=_maybe_text(job, "run_post_path"),
            ),
            _action_button(
                label=_text(job, "toggle_label"),
                post_path=_maybe_text(job, "toggle_post_path"),
            ),
            _action_button(
                label="Delete",
                tone="danger",
                post_path=_maybe_text(job, "delete_post_path"),
            ),
        ],
    )


def _completed_row(execution: Mapping[str, object]) -> tuple[Node, ...]:
    return (
        h.div[
            h.div(class_="font-semibold text-slate-950")[_text(execution, "source")],
            h.p(class_="mt-1 font-mono text-xs text-slate-500")[
                _text(execution, "slug")
            ],
        ],
        h.div[
            h.p(class_="font-medium text-slate-900")[
                f"#{_text(execution, 'execution_id')}"
            ],
            h.p(class_="mt-1 text-xs text-slate-500")[
                f"job {_text(execution, 'job_id')}"
            ],
        ],
        h.div[
            h.p(class_="font-medium text-slate-900")[_text(execution, "ended_at")],
            h.p(class_="mt-1 text-xs text-slate-500")[_text(execution, "summary")],
        ],
        status_badge(
            label=_text(execution, "status"),
            tone=_text(execution, "status_tone"),
        ),
        h.div(class_="min-w-48 whitespace-normal")[
            h.p(class_="font-medium text-slate-900")[_text(execution, "stats")]
        ],
        inline_link(
            href=_text(execution, "log_href"),
            label="View log",
            tone="amber",
        ),
    )


def runs_page(
    *,
    running_executions: tuple[Mapping[str, object], ...] | None = None,
    upcoming_jobs: tuple[Mapping[str, object], ...] | None = None,
    completed_executions: tuple[Mapping[str, object], ...] | None = None,
) -> Renderable:
    running_items = running_executions or ()
    upcoming_items = upcoming_jobs or ()
    completed_items = completed_executions or ()
    running_rows = tuple(_running_row(execution) for execution in running_items)
    upcoming_rows = tuple(_upcoming_row(job) for job in upcoming_items)
    completed_rows = tuple(_completed_row(execution) for execution in completed_items)

    return page_shell(
        current_path="/runs",
        eyebrow="Execution control",
        title="Runs",
        description="Running executions first, then the schedule queue, then completed history. Logs are routed through app URLs instead of direct file serving.",
        actions=muted_action_link(href="/sources", label="Back to sources"),
        content=(
            table_section(
                eyebrow="Live work",
                title="Running job executions",
                subtitle="Operators can inspect the live log stream, request a graceful stop, and escalate to a hard kill after the 15 second deadline if needed.",
                headers=(
                    "Source",
                    "Execution",
                    "Started",
                    "Status",
                    "Stats",
                    "Actions",
                ),
                rows=running_rows,
            ),
            table_section(
                eyebrow="Queue",
                title="Upcoming jobs",
                subtitle="Scheduled work shows enable or disable state, run-now affordances, and destructive delete controls. Deleting removes the source-linked job and its execution history.",
                headers=(
                    "Source",
                    "Next run",
                    "Cron",
                    "State",
                    "Run now",
                    "Actions",
                ),
                rows=upcoming_rows,
            ),
            table_section(
                eyebrow="History",
                title="Completed job executions",
                subtitle="Recent execution history keeps the summary counters visible and links back to the plain text log view.",
                headers=(
                    "Source",
                    "Execution",
                    "Ended",
                    "Status",
                    "Summary",
                    "Log",
                ),
                rows=completed_rows,
            ),
        ),
    )


def execution_logs_page(
    *,
    job_id: int,
    execution_id: int,
    log_view: Mapping[str, object] | None = None,
) -> Renderable:
    if log_view is None:
        log_view = {
            "title": f"Job {job_id} / execution {execution_id}",
            "description": "Plain text log view routed through the app.",
            "status_label": "Unavailable",
            "status_tone": "failed",
            "log_text": "",
            "error_message": "Execution log is only available from persisted job runs.",
        }

    error_message = _maybe_text(log_view, "error_message")
    error_notice = (
        h.div(
            class_="mt-3 rounded-2xl bg-rose-50 px-4 py-3 text-sm font-medium text-rose-800"
        )[
            h.p["Execution log unavailable"],
            h.p(class_="mt-1 font-normal")[error_message],
        ]
        if error_message is not None
        else None
    )

    return page_shell(
        current_path=f"/job/{job_id}/execution/{execution_id}/logs",
        eyebrow="Execution log",
        title=_text(log_view, "title"),
        description=_text(log_view, "description"),
        actions=muted_action_link(href="/runs", label="Back to runs"),
        content=(
            section_card(
                content=(
                    h.div(class_="flex items-end justify-between gap-4")[
                        h.div[
                            h.p(
                                class_="text-xs font-semibold uppercase tracking-[0.22em] text-amber-600"
                            )["Route"],
                            h.h2(class_="mt-2 text-xl font-semibold text-slate-950")[
                                f"/job/{job_id}/execution/{execution_id}/logs"
                            ],
                            h.p(class_="mt-2 text-sm text-slate-600")[
                                _text(log_view, "description")
                            ],
                        ],
                        status_badge(
                            label=_text(log_view, "status_label"),
                            tone=_text(log_view, "status_tone"),
                        ),
                    ],
                    error_notice,
                    h.pre(
                        class_="mt-3 overflow-x-auto rounded-[1.5rem] bg-slate-950 p-5 text-xs leading-6 text-emerald-200"
                    )[_text(log_view, "log_text")],
                )
            ),
        ),
    )