use remora_domain::{AttemptState, JobLifecycle, JobPhase, OpaqueId};
use serde::{Deserialize, Serialize};

use crate::{
    AttemptAuthorityDto, CursorDto, DateTimeDto, HuggingFaceRepositoryTypeDto,
    HuggingFaceSelectionDto, JobFailureDto, NullableDto, ObjectIdentityDto, PositiveIntegerDto,
    ProgressDto, ResultDescriptorDto, SafeIntegerDto, TargetDto,
};

#[derive(Clone, Deserialize, PartialEq, Serialize)]
#[serde(tag = "kind", rename_all = "snake_case")]
pub enum SourceProjectionDto {
    Http(HttpSourceProjectionDto),
    ObjectStore(ObjectStoreSourceProjectionDto),
    HuggingFace(HuggingFaceSourceProjectionDto),
}

#[derive(Clone, Deserialize, PartialEq, Serialize)]
#[serde(deny_unknown_fields)]
pub struct HttpSourceProjectionDto {
    pub display_url: String,
    pub result_path: String,
    #[serde(
        default,
        deserialize_with = "crate::dto::optional_non_null",
        skip_serializing_if = "Option::is_none"
    )]
    pub credential_id: Option<OpaqueId>,
}

#[derive(Clone, Deserialize, PartialEq, Serialize)]
#[serde(deny_unknown_fields)]
pub struct ObjectStoreSourceProjectionDto {
    pub store: String,
    pub bucket: String,
    pub key: String,
    #[serde(
        default,
        deserialize_with = "crate::dto::optional_non_null",
        skip_serializing_if = "Option::is_none"
    )]
    pub version_id: Option<String>,
    pub result_path: String,
    #[serde(
        default,
        deserialize_with = "crate::dto::optional_non_null",
        skip_serializing_if = "Option::is_none"
    )]
    pub credential_id: Option<OpaqueId>,
}

#[derive(Clone, Deserialize, PartialEq, Serialize)]
#[serde(deny_unknown_fields)]
pub struct HuggingFaceSourceProjectionDto {
    pub repository_type: HuggingFaceRepositoryTypeDto,
    pub repository_id: String,
    pub revision: String,
    #[serde(
        default,
        deserialize_with = "crate::dto::optional_non_null",
        skip_serializing_if = "Option::is_none"
    )]
    pub selection: Option<HuggingFaceSelectionDto>,
    #[serde(
        default,
        deserialize_with = "crate::dto::optional_non_null",
        skip_serializing_if = "Option::is_none"
    )]
    pub credential_id: Option<OpaqueId>,
}

#[derive(Clone, Debug, Deserialize, Eq, PartialEq, Serialize)]
#[serde(deny_unknown_fields)]
pub struct LeaseProjectionDto {
    pub expires_at: DateTimeDto,
    pub renew_after: DateTimeDto,
}

#[derive(Clone, Debug, Deserialize, Eq, PartialEq, Serialize)]
#[serde(deny_unknown_fields)]
pub struct ProgressValueDto {
    pub completed_bytes: SafeIntegerDto,
    pub total_bytes: Option<SafeIntegerDto>,
    pub completed_members: SafeIntegerDto,
    pub total_members: Option<SafeIntegerDto>,
}

#[derive(Clone, Debug, Deserialize, Eq, PartialEq, Serialize)]
#[serde(deny_unknown_fields)]
pub struct CheckpointProjectionDto {
    pub reusable: bool,
    pub validated_bytes: SafeIntegerDto,
    pub validated_members: SafeIntegerDto,
}

#[derive(Clone, Copy, Debug, Deserialize, Eq, PartialEq, Serialize)]
#[serde(rename_all = "snake_case")]
pub enum DurableDescriptorKindDto {
    ResolvedSource,
    Checkpoint,
}

#[derive(Clone, Debug, Deserialize, Eq, PartialEq, Serialize)]
#[serde(deny_unknown_fields)]
pub struct DurableDescriptorRefDto {
    pub id: OpaqueId,
    pub kind: DurableDescriptorKindDto,
    pub schema_version: PositiveIntegerDto,
    pub byte_length: SafeIntegerDto,
    #[serde(
        default,
        deserialize_with = "crate::dto::optional_non_null",
        skip_serializing_if = "Option::is_none"
    )]
    pub item_count: Option<SafeIntegerDto>,
    pub checksum: String,
}

#[derive(Clone, Debug, Deserialize, Eq, PartialEq, Serialize)]
#[serde(deny_unknown_fields)]
pub struct ResultMemberDto {
    pub id: OpaqueId,
    pub path: String,
    pub size: SafeIntegerDto,
    pub object: ObjectIdentityDto,
}

#[derive(Clone, Debug, Deserialize, Eq, PartialEq, Serialize)]
#[serde(deny_unknown_fields)]
pub struct ResultMemberPageDto {
    pub items: Vec<ResultMemberDto>,
    pub next_cursor: NullableDto<String>,
}

#[derive(Clone, Copy, Debug, Deserialize, Eq, PartialEq, Serialize)]
#[serde(rename_all = "snake_case")]
pub enum JobKindDto {
    Job,
}

#[derive(Clone, Copy, Debug, Deserialize, Eq, PartialEq, Serialize)]
#[serde(rename_all = "snake_case")]
pub enum TombstoneKindDto {
    Tombstone,
}

#[derive(Clone, Deserialize, PartialEq, Serialize)]
#[serde(deny_unknown_fields)]
pub struct JobDto {
    pub resource_kind: JobKindDto,
    pub id: OpaqueId,
    pub owner: OpaqueId,
    pub label: NullableDto<String>,
    pub revision: PositiveIntegerDto,
    pub phase: JobPhase,
    pub lifecycle: JobLifecycle,
    pub source: SourceProjectionDto,
    pub target: TargetDto,
    pub authoritative_attempt: NullableDto<AttemptAuthorityDto>,
    pub progress: NullableDto<ProgressDto>,
    pub checkpoint: NullableDto<CheckpointProjectionDto>,
    pub result: NullableDto<ResultDescriptorDto>,
    pub failure: NullableDto<JobFailureDto>,
    pub created_at: DateTimeDto,
    pub updated_at: DateTimeDto,
    pub event_cursor: CursorDto,
}

#[derive(Clone, Copy, Debug, Deserialize, Eq, PartialEq, Serialize)]
pub enum TerminalJobPhaseDto {
    Succeeded,
    Failed,
    Cancelled,
}

#[derive(Clone, Debug, Deserialize, PartialEq, Serialize)]
#[serde(deny_unknown_fields)]
pub struct JobTombstoneDto {
    pub resource_kind: TombstoneKindDto,
    pub id: OpaqueId,
    pub owner: OpaqueId,
    pub target: TargetDto,
    pub terminal_phase: TerminalJobPhaseDto,
    pub deletion_operation_id: OpaqueId,
    pub created_at: DateTimeDto,
    pub hard_delete_started_at: DateTimeDto,
    pub updated_at: DateTimeDto,
    pub event_cursor: CursorDto,
}

#[derive(Clone, Deserialize, PartialEq, Serialize)]
#[serde(untagged)]
pub enum JobResourceDto {
    Job(Box<JobDto>),
    Tombstone(Box<JobTombstoneDto>),
}

#[derive(Clone, Deserialize, PartialEq, Serialize)]
#[serde(deny_unknown_fields)]
pub struct JobPageDto {
    pub items: Vec<JobResourceDto>,
    pub next_cursor: NullableDto<String>,
    pub event_cursor: CursorDto,
}

#[derive(Clone, Copy, Debug, Deserialize, Eq, PartialEq, Serialize)]
pub enum AttemptRecordStateDto {
    AttemptAuthorized,
    AttemptExecuting,
    AttemptStopped,
    AttemptCommitted,
}

impl From<AttemptRecordStateDto> for AttemptState {
    fn from(value: AttemptRecordStateDto) -> Self {
        match value {
            AttemptRecordStateDto::AttemptAuthorized => Self::AttemptAuthorized,
            AttemptRecordStateDto::AttemptExecuting => Self::AttemptExecuting,
            AttemptRecordStateDto::AttemptStopped => Self::AttemptStopped,
            AttemptRecordStateDto::AttemptCommitted => Self::AttemptCommitted,
        }
    }
}

#[derive(Clone, Debug, Deserialize, PartialEq, Serialize)]
#[serde(deny_unknown_fields)]
pub struct AttemptRecordDto {
    pub id: OpaqueId,
    pub fence: PositiveIntegerDto,
    pub worker_incarnation: OpaqueId,
    pub state: AttemptRecordStateDto,
    pub progress: NullableDto<ProgressDto>,
    pub result: NullableDto<ResultDescriptorDto>,
    pub failure: NullableDto<JobFailureDto>,
    pub created_at: DateTimeDto,
    pub updated_at: DateTimeDto,
}

#[derive(Clone, Debug, Deserialize, PartialEq, Serialize)]
#[serde(deny_unknown_fields)]
pub struct AttemptPageDto {
    pub items: Vec<AttemptRecordDto>,
    pub next_cursor: NullableDto<String>,
}

#[derive(Clone, Copy, Debug, Deserialize, Eq, PartialEq, Serialize)]
#[serde(rename_all = "snake_case")]
pub enum DeletionProblemClassDto {
    Authorization,
    TargetUnavailable,
    Configuration,
    Internal,
}

#[derive(Clone, Debug, Deserialize, Eq, PartialEq, Serialize)]
#[serde(deny_unknown_fields)]
pub struct DeletionProblemDto {
    pub class: DeletionProblemClassDto,
    pub message: String,
}

#[derive(Clone, Copy, Debug, Deserialize, Eq, PartialEq, Serialize)]
#[serde(rename_all = "snake_case")]
pub enum DeletionStateDto {
    Queued,
    Running,
    RetryWait,
    Blocked,
    Completed,
}

#[derive(Clone, Debug, Deserialize, Eq, PartialEq, Serialize)]
#[serde(deny_unknown_fields)]
pub struct DeletionOperationDto {
    pub id: OpaqueId,
    pub job_id: OpaqueId,
    pub state: DeletionStateDto,
    pub problem: NullableDto<DeletionProblemDto>,
    pub created_at: DateTimeDto,
    pub updated_at: DateTimeDto,
}

#[derive(Clone, Copy, Debug, Deserialize, Eq, PartialEq, Serialize)]
#[serde(rename_all = "snake_case")]
pub enum ApiErrorCodeDto {
    InvalidRequest,
    Unauthenticated,
    Forbidden,
    NotFound,
    IdempotencyConflict,
    PreconditionFailed,
    CursorInvalid,
    CursorExpired,
    RateLimited,
    Unavailable,
    Internal,
}

#[derive(Clone, Debug, Deserialize, Eq, PartialEq, Serialize)]
#[serde(deny_unknown_fields)]
pub struct ApiErrorFieldDto {
    pub pointer: String,
    pub code: String,
}

#[derive(Clone, Debug, Deserialize, Eq, PartialEq, Serialize)]
#[serde(deny_unknown_fields)]
pub struct ApiErrorDto {
    pub code: ApiErrorCodeDto,
    pub message: String,
    pub request_id: OpaqueId,
    #[serde(
        default,
        deserialize_with = "crate::dto::optional_non_null",
        skip_serializing_if = "Option::is_none"
    )]
    pub fields: Option<Vec<ApiErrorFieldDto>>,
}

#[derive(Clone, Debug, Deserialize, Eq, PartialEq, Serialize)]
#[serde(deny_unknown_fields)]
pub struct StagingTargetDto {
    pub store: String,
    pub bucket: String,
    pub prefix: String,
}