from django.db import models

from core.enums import (
    PropertyCommissionAttachmentCategory,
    PropertyCommissionOwnerType,
    PropertyCommissionStatus,
    PropertyListingHistoryStatus,
    PropertyListingType,
    PropertyNumberHolderApprovalStatus,
)
from core.models.base import TimeStampedModel, UUIDPrimaryKeyModel


class ListingHistory(UUIDPrimaryKeyModel):
    property = models.ForeignKey(
        "fonrey_property.Property",
        on_delete=models.RESTRICT,
        related_name="listing_histories",
    )
    listing_type = models.CharField(max_length=20, choices=PropertyListingType.choices)
    status = models.CharField(
        max_length=10,
        choices=PropertyListingHistoryStatus.choices,
        default=PropertyListingHistoryStatus.ACTIVE,
    )

    sale_price = models.DecimalField(max_digits=12, decimal_places=2, null=True, blank=True)
    rent_price = models.DecimalField(max_digits=10, decimal_places=2, null=True, blank=True)
    sale_unit_price = models.DecimalField(max_digits=10, decimal_places=2, null=True, blank=True)

    ownership_years = models.CharField(max_length=30, blank=True, default="")
    is_only_house = models.BooleanField(null=True, blank=True)
    tax_included = models.CharField(max_length=15, blank=True, default="")
    sale_reason = models.TextField(blank=True, default="")

    seller_agent = models.ForeignKey(
        "org.Staff", null=True, blank=True, on_delete=models.SET_NULL
    )
    seller_agent_snapshot = models.JSONField(null=True, blank=True)

    started_at = models.DateTimeField(auto_now_add=False)
    ended_at = models.DateTimeField(null=True, blank=True)
    created_at = models.DateTimeField(auto_now_add=True)

    class Meta:
        db_table = "listing_histories"
        verbose_name = "挂牌历史"
        verbose_name_plural = "挂牌历史"
        indexes = [
            models.Index(fields=["property"], name="idx_lh_property"),
            models.Index(fields=["property", "status"], name="idx_lh_active"),
        ]


class PriceChange(UUIDPrimaryKeyModel):
    property = models.ForeignKey(
        "fonrey_property.Property", on_delete=models.RESTRICT, related_name="price_changes"
    )
    old_sale_price = models.DecimalField(max_digits=12, decimal_places=2, null=True, blank=True)
    new_sale_price = models.DecimalField(max_digits=12, decimal_places=2, null=True, blank=True)
    old_bottom_price = models.DecimalField(max_digits=12, decimal_places=2, null=True, blank=True)
    new_bottom_price = models.DecimalField(max_digits=12, decimal_places=2, null=True, blank=True)
    old_record_price = models.DecimalField(max_digits=12, decimal_places=2, null=True, blank=True)
    new_record_price = models.DecimalField(max_digits=12, decimal_places=2, null=True, blank=True)
    old_rent_price = models.DecimalField(max_digits=10, decimal_places=2, null=True, blank=True)
    new_rent_price = models.DecimalField(max_digits=10, decimal_places=2, null=True, blank=True)

    change_reason = models.TextField()
    changed_at = models.DateTimeField(auto_now_add=True)
    changed_by = models.ForeignKey("org.Staff", on_delete=models.RESTRICT)

    class Meta:
        db_table = "price_changes"
        verbose_name = "调价记录"
        verbose_name_plural = "调价记录"
        indexes = [
            models.Index(fields=["property"], name="idx_pchg_property"),
            models.Index(fields=["property", "-changed_at"], name="idx_pchg_time"),
        ]


class Commission(TimeStampedModel):
    property = models.ForeignKey(
        "fonrey_property.Property", on_delete=models.CASCADE, related_name="commissions"
    )
    commission_type = models.CharField(max_length=50)
    period_start = models.DateField()
    period_end = models.DateField(null=True, blank=True)
    is_open_ended = models.BooleanField(default=False)

    agent = models.ForeignKey(
        "org.Staff",
        null=True,
        blank=True,
        on_delete=models.SET_NULL,
        related_name="commissions_as_agent",
    )
    agent_snapshot = models.JSONField(null=True, blank=True)

    signing_method = models.CharField(max_length=50, blank=True, default="")

    owner_type = models.CharField(
        max_length=20,
        choices=PropertyCommissionOwnerType.choices,
        default=PropertyCommissionOwnerType.OWNER,
    )
    property_owner_contact = models.ForeignKey(
        "fonrey_property.PropertyContact",
        null=True,
        blank=True,
        on_delete=models.SET_NULL,
        related_name="commissions",
    )
    owner_name = models.CharField(max_length=50, blank=True, default="")
    owner_id_type = models.CharField(max_length=20, blank=True, default="")
    owner_id_number = models.CharField(max_length=50, blank=True, default="")
    owner_id_number_enc = models.BinaryField(null=True, blank=True)

    remarks = models.TextField(blank=True, default="")

    status = models.CharField(
        max_length=20,
        choices=PropertyCommissionStatus.choices,
        default=PropertyCommissionStatus.ACTIVE,
    )

    created_by = models.ForeignKey(
        "org.Staff",
        null=True,
        blank=True,
        on_delete=models.SET_NULL,
        related_name="created_commissions",
    )

    class Meta:
        db_table = "commissions"
        verbose_name = "委托管理"
        verbose_name_plural = "委托管理"
        indexes = [
            models.Index(fields=["property"], name="idx_commissions_property"),
            models.Index(fields=["property", "status"], name="idx_commissions_active"),
        ]


class CommissionAttachment(UUIDPrimaryKeyModel):
    commission = models.ForeignKey(
        Commission, on_delete=models.CASCADE, related_name="attachments"
    )
    category = models.CharField(
        max_length=20, choices=PropertyCommissionAttachmentCategory.choices
    )
    file_key = models.TextField()
    file_name = models.CharField(max_length=255)
    file_size = models.IntegerField(null=True, blank=True)
    sort_order = models.SmallIntegerField(default=0)
    created_at = models.DateTimeField(auto_now_add=True)

    class Meta:
        db_table = "commission_attachments"
        verbose_name = "委托附件"
        verbose_name_plural = "委托附件"
        indexes = [models.Index(fields=["commission"], name="idx_ca_commission")]


class NumberHolderApproval(UUIDPrimaryKeyModel):
    property = models.ForeignKey(
        "fonrey_property.Property",
        on_delete=models.CASCADE,
        related_name="number_holder_approvals",
    )
    contact = models.ForeignKey(
        "fonrey_property.PropertyContact",
        on_delete=models.CASCADE,
        related_name="number_holder_approvals",
    )

    applicant = models.ForeignKey(
        "org.Staff", on_delete=models.RESTRICT, related_name="nh_applications"
    )
    approver = models.ForeignKey(
        "org.Staff",
        null=True,
        blank=True,
        on_delete=models.SET_NULL,
        related_name="nh_approvals",
    )

    status = models.CharField(
        max_length=20,
        choices=PropertyNumberHolderApprovalStatus.choices,
        default=PropertyNumberHolderApprovalStatus.PENDING,
    )
    remarks = models.TextField(blank=True, default="")
    created_at = models.DateTimeField(auto_now_add=True)
    decided_at = models.DateTimeField(null=True, blank=True)

    class Meta:
        db_table = "number_holder_approvals"
        verbose_name = "号码方审批"
        verbose_name_plural = "号码方审批"
        indexes = [
            models.Index(fields=["status"], name="idx_nha_status"),
            models.Index(fields=["property"], name="idx_nha_property"),
        ]