108 lines
3.5 KiB
C
108 lines
3.5 KiB
C
#include "server_db_internal.h"
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Result(bool) Channel_exists(ServerQueries* q, i64 id){
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Deferral(1);
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tsqlite_statement* st = q->channels.exists;
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Defer(tsqlite_statement_reset(st));
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try_void(tsqlite_statement_bind_i64(st, "$id", id));
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try(bool has_result, i, tsqlite_statement_step(st));
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Return RESULT_VALUE(i, has_result);
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}
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Result(void) Channel_createOrUpdate(ServerQueries* q,
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i64 id, str name, str description)
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{
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Deferral(4);
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try_assert(id > 0);
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try_assert(name.len >= CHANNEL_NAME_SIZE_MIN && name.len <= CHANNEL_NAME_SIZE_MAX);
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try_assert(description.len <= CHANNEL_DESC_SIZE_MAX);
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tsqlite_statement* st = NULL;
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Defer(tsqlite_statement_reset(st));
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try(bool channel_exists, i, Channel_exists(q, id));
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if(channel_exists){
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// update existing channel
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st = q->channels.update;
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}
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else {
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// insert new channel
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st = q->channels.insert;
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}
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try_void(tsqlite_statement_bind_i64(st, "$id", id));
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try_void(tsqlite_statement_bind_str(st, "$name", name, NULL));
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try_void(tsqlite_statement_bind_str(st, "$description", description, NULL));
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try_void(tsqlite_statement_step(st));
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Return RESULT_VOID;
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}
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Result(void) Channel_saveMessage(ServerQueries* q,
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i64 channel_id, i64 sender_id, Array(u8) content,
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DateTime* out_timestamp)
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{
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Deferral(1);
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try_assert(content.len >= MESSAGE_SIZE_MIN && content.len <= MESSAGE_SIZE_MAX);
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tsqlite_statement* st = q->messages.insert;
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Defer(tsqlite_statement_reset(st));
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try_void(tsqlite_statement_bind_i64(st, "$channel_id", channel_id));
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try_void(tsqlite_statement_bind_i64(st, "$sender_id", sender_id));
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try_void(tsqlite_statement_bind_blob(st, "$content", content, NULL));
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try(bool has_result, i, tsqlite_statement_step(st));
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try_assert(has_result);
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try(i64 message_id, i, tsqlite_statement_getResult_i64(st));
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str timestamp_str;
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try_void(tsqlite_statement_getResult_str(st, ×tamp_str));
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try_void(DateTime_parse(timestamp_str.data, out_timestamp));
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Return RESULT_VALUE(i, message_id);
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}
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Result(void) Channel_loadMessageBlock(ServerQueries* q,
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i64 channel_id, i64 first_message_id, u32 count,
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MessageBlockMeta* block_meta, Array(u8) block_data)
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{
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Deferral(1);
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try_assert(channel_id > 0);
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try_assert(block_data.len >= count * (sizeof(MessageMeta) + MESSAGE_SIZE_MAX));
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if(count == 0){
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Return RESULT_VOID;
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}
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tsqlite_statement* st = q->messages.get_block;
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Defer(tsqlite_statement_reset(st));
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try_void(tsqlite_statement_bind_i64(st, "$channel_id", channel_id));
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try_void(tsqlite_statement_bind_i64(st, "$first_message_id", first_message_id));
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try_void(tsqlite_statement_bind_i64(st, "$count", count));
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zeroStruct(block_meta);
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MessageMeta msg_meta = {0};
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Array(u8) msg_content;
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str tmp_str = str_null;
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while(true){
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try(bool has_result, i, tsqlite_statement_step(st));
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if(!has_result)
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break;
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// id
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try(msg_meta.id, i, tsqlite_statement_getResult_i64(st));
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// sender_id
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try(msg_meta.sender_id, i, tsqlite_statement_getResult_i64(st));
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// content
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try_void(tsqlite_statement_getResult_blob(st, &msg_content));
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// timestamp
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try_void(tsqlite_statement_getResult_str(st, &tmp_str));
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try_void(DateTime_parse(tmp_str.data, &msg_meta.timestamp));
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try(u32 write_n, u, MessageBlock_writeMessage(&msg_meta, msg_content, block_meta, &block_data));
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try_assert(write_n > 0);
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}
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Return RESULT_VOID;
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}
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